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Posted to commits@tvm.apache.org by GitBox <gi...@apache.org> on 2020/07/09 09:34:25 UTC

[GitHub] [incubator-tvm] lhf1997 commented on pull request #6012: [VTA] Move compiler related registry items to vta/build_module.py

lhf1997 commented on pull request #6012:
URL: https://github.com/apache/incubator-tvm/pull/6012#issuecomment-656022147


   When i run the 2D convolution testbench in Pynq-Z1 i found a new problem. Here are the codes.
   `Conv2DWorkload(batch=1, height=56, width=56, in_filter=64, out_filter=64, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1)
   CPU CONV2D TEST PASSED: Time cost = 0.14192 sec/op, 1.62916 GOPS
   Conv2DWorkload(batch=1, height=56, width=56, in_filter=64, out_filter=128, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.11228 sec/op, 1.02962 GOPS
   Conv2DWorkload(batch=1, height=56, width=56, in_filter=64, out_filter=128, hkernel=1, wkernel=1, hpad=0, wpad=0, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.0120058 sec/op, 1.06991 GOPS
   Conv2DWorkload(batch=1, height=28, width=28, in_filter=128, out_filter=128, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1)
   CPU CONV2D TEST PASSED: Time cost = 0.153793 sec/op, 1.50339 GOPS
   Conv2DWorkload(batch=1, height=28, width=28, in_filter=128, out_filter=256, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.107459 sec/op, 1.07581 GOPS
   Conv2DWorkload(batch=1, height=28, width=28, in_filter=128, out_filter=256, hkernel=1, wkernel=1, hpad=0, wpad=0, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.0114087 sec/op, 1.1259 GOPS
   Conv2DWorkload(batch=1, height=14, width=14, in_filter=256, out_filter=256, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1)
   CPU CONV2D TEST PASSED: Time cost = 0.150966 sec/op, 1.53155 GOPS
   Conv2DWorkload(batch=1, height=14, width=14, in_filter=256, out_filter=512, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.0988321 sec/op, 1.16972 GOPS
   Conv2DWorkload(batch=1, height=14, width=14, in_filter=256, out_filter=512, hkernel=1, wkernel=1, hpad=0, wpad=0, hstride=2, wstride=2)
   CPU CONV2D TEST PASSED: Time cost = 0.0113619 sec/op, 1.13054 GOPS
   Conv2DWorkload(batch=1, height=7, width=7, in_filter=512, out_filter=512, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1)
   CPU CONV2D TEST PASSED: Time cost = 0.189959 sec/op, 1.21716 GOPS
   Conv2DWorkload(batch=1, height=56, width=56, in_filter=64, out_filter=64, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1)
   Traceback (most recent call last):
     File "tvm/vta/tests/python/integration/test_benchmark_topi_conv2d.py", line 260, in <module>
       test_conv2d(device="vta")
     File "tvm/vta/tests/python/integration/test_benchmark_topi_conv2d.py", line 256, in test_conv2d
       vta.testing.run(_run)
     File "/home/lhf/tvm/vta/python/vta/testing/util.py", line 75, in run
       run_func(env, remote)
     File "tvm/vta/tests/python/integration/test_benchmark_topi_conv2d.py", line 255, in _run
       run_conv2d(env, remote, wl, target)
     File "tvm/vta/tests/python/integration/test_benchmark_topi_conv2d.py", line 186, in run_conv2d
       data_arr = tvm.nd.array(data_np, ctx)
     File "/home/lhf/tvm/python/tvm/runtime/ndarray.py", line 503, in array
       return empty(arr.shape, arr.dtype, ctx).copyfrom(arr)
     File "/home/lhf/tvm/python/tvm/runtime/ndarray.py", line 278, in empty
       ctypes.byref(handle)))
     File "/home/lhf/tvm/python/tvm/_ffi/base.py", line 334, in check_call
       raise get_last_ffi_error()
   tvm.error.RPCError: Traceback (most recent call last):
     [bt] (8) /home/lhf/tvm/build/libtvm.so(tvm::runtime::NDArray::Empty(std::vector<long, std::allocator<long> >, DLDataType, DLContext)+0x1ff) [0x7f04af53346f]
     [bt] (7) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCDeviceAPI::AllocDataSpace(DLContext, unsigned long, unsigned long, DLDataType)+0xbe7) [0x7f04af561977]
     [bt] (6) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCClientSession::AllocDataSpace(DLContext, unsigned long, unsigned long, DLDataType)+0x247) [0x7f04af56ad07]
     [bt] (5) /home/lhf/tvm/build/libtvm.so(+0xdce260) [0x7f04af567260]
     [bt] (4) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::HandleUntilReturnEvent(bool, std::function<void (tvm::runtime::TVMArgs)>)+0x1ab) [0x7f04af566e9b]
     [bt] (3) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::EventHandler::HandleNextEvent(bool, bool, std::function<void (tvm::runtime::TVMArgs)>)+0xd7) [0x7f04af5701b7]
     [bt] (2) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::EventHandler::HandleProcessPacket(std::function<void (tvm::runtime::TVMArgs)>)+0x126) [0x7f04af56ff96]
     [bt] (1) /home/lhf/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::EventHandler::HandleReturn(tvm::runtime::RPCCode, std::function<void (tvm::runtime::TVMArgs)>)+0x13f) [0x7f04af56f4bf]
     [bt] (0) /home/lhf/tvm/build/libtvm.so(+0xdcc152) [0x7f04af565152]
     [bt] (8) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::RPCEndpoint::HandleUntilReturnEvent(bool, std::function<void (tvm::runtime::TVMArgs)>)+0x187) [0xb58de5a4]
     [bt] (7) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::RPCEndpoint::EventHandler::HandleNextEvent(bool, bool, std::function<void (tvm::runtime::TVMArgs)>)+0x85) [0xb58e42b2]
     [bt] (6) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::RPCEndpoint::EventHandler::HandleProcessPacket(std::function<void (tvm::runtime::TVMArgs)>)+0x13f) [0xb58e41e8]
     [bt] (5) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::RPCEndpoint::EventHandler::HandleSyscall(tvm::runtime::RPCCode)+0x10f) [0xb58de344]
     [bt] (4) /home/xilinx/tvm/build/libtvm_runtime.so(void tvm::runtime::RPCEndpoint::EventHandler::SysCallHandler<void (*)(tvm::runtime::RPCSession*, tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)>(void (*)(tvm::runtime::RPCSession*, tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*))+0x51) [0xb58e3c3a]
     [bt] (3) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::RPCDevAllocData(tvm::runtime::RPCSession*, tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)+0x7b) [0xb58dd63c]
     [bt] (2) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::DeviceAPIManager::GetAPI(int, bool)+0xdf) [0xb589bbdc]
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(tvm::runtime::DeviceAPIManager::GetAPI(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool)+0x89) [0xb589b8ce]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 64, in ext_dev_callback
       return tvm.get_global_func("device_api.ext_dev")()
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in __call__
       raise get_last_ffi_error()
     [bt] (1) /home/xilinx/tvm/build/libtvm_runtime.so(TVMFuncCall+0x37) [0xb58985bc]
     [bt] (0) /home/xilinx/tvm/build/libtvm_runtime.so(+0x2a1f8) [0xb58961f8]
     File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
       rv = local_pyfunc(*pyargs)
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 63, in ext_dev_callback
       load_vta_dll()
     File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 53, in load_vta_dll
       logging.info("Loading VTA library: %s", dll_path)
     File "/usr/lib/python3.6/logging/__init__.py", line 1900, in info
       root.info(msg, *args, **kwargs)
     File "/usr/lib/python3.6/logging/__init__.py", line 1306, in info
       self._log(INFO, msg, args, **kwargs)
     File "/usr/lib/python3.6/logging/__init__.py", line 1441, in _log
       exc_info, func, extra, sinfo)
     File "/usr/lib/python3.6/logging/__init__.py", line 1411, in makeRecord
       sinfo)
     File "/usr/lib/python3.6/logging/__init__.py", line 277, in __init__
       if (args and len(args) == 1 and isinstance(args[0], collections.Mapping)
     File "/home/lhf/tvm/src/runtime/rpc/rpc_endpoint.cc", line 370
   RPCError: Error caught from RPC call:
   RecursionError: maximum recursion depth exceeded in comparison
   `
   I tried add the sys.setrecursionlimit in py script, but useless.


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