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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2018/11/13 04:04:40 UTC
[GitHub] tornadomeet opened a new issue #4659: gpu memory allocate will be
error when using multiprocessing.Process
tornadomeet opened a new issue #4659: gpu memory allocate will be error when using multiprocessing.Process
URL: https://github.com/apache/incubator-mxnet/issues/4659
reproduce code
```python
import numpy as np
import mxnet as mx
from multiprocessing import Process, current_process
def test():
print("process id is {:s}".format(current_process().name))
a = mx.nd.array(np.zeros((100, 100, 100, 100)), mx.gpu(0))
a.asnumpy()
if __name__ == '__main__':
runs = [Process(target=test) for i in range(1)] # 1 or 2 or N process is the same error
for p in runs:
p.start()
for p in runs:
p.join()
print("done!")
```
Os: linux, centos 7 + cuda7.5 + cuDNN 5.1
log:
```
[14:32:58] /home/work/wuwei/project/dmlc/mxnet/dmlc-core/include/dmlc/./logging.h:300: [14:32:58] src/storage/storage.cc:38: Check failed: e == cudaSuccess || e == cudaErrorCudartUnloading CUDA: initialization error
Stack trace returned 40 entries:
[bt] (0) /home/work/wuwei/tools/mxnet/lib64/python2.7/site-packages/mxnet-0.9.1-py2.7-linux-x86_64.egg/mxnet/libmxnet.so(_ZN4dmlc15LogMessageFatalD1Ev+0x29) [0x7f32b9501039]
[bt] (1) /home/work/wuwei/tools/mxnet/lib64/python2.7/site-packages/mxnet-0.9.1-py2.7-linux-x86_64.egg/mxnet/libmxnet.so(_ZN5mxnet11StorageImpl14ActivateDeviceENS_7ContextE+0x2a6) [0x7f32b9fb4de6]
[bt] (2) /home/work/wuwei/tools/mxnet/lib64/python2.7/site-packages/mxnet-0.9.1-py2.7-linux-x86_64.egg/mxnet/libmxnet.so(_ZN5mxnet11StorageImpl5AllocEmNS_7ContextE+0x4a) [0x7f32b9fb263a]
[bt] (3) /home/work/wuwei/tools/mxnet/lib64/python2.7/site-packages/mxnet-0.9.1-py2.7-linux-x86_64.egg/mxnet/libmxnet.so(MXNDArrayCreateEx+0x595) [0x7f32b9fe6685]
[bt] (4) /lib64/libffi.so.6(ffi_call_unix64+0x4c) [0x7f32c24f9dac]
[bt] (5) /lib64/libffi.so.6(ffi_call+0x1f5) [0x7f32c24f96d5]
[bt] (6) /usr/lib64/python2.7/lib-dynload/_ctypes.so(_ctypes_callproc+0x30b) [0x7f32c270cc8b]
[bt] (7) /usr/lib64/python2.7/lib-dynload/_ctypes.so(+0xaa85) [0x7f32c2706a85]
[bt] (8) /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f32cd97c0b3]
[bt] (9) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x1d4c) [0x7f32cda1025c]
[bt] (10) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (11) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x425f) [0x7f32cda1276f]
[bt] (12) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (13) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x425f) [0x7f32cda1276f]
[bt] (14) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (15) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x425f) [0x7f32cda1276f]
[bt] (16) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (17) /lib64/libpython2.7.so.1.0(+0x6f05d) [0x7f32cd9a105d]
[bt] (18) /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f32cd97c0b3]
[bt] (19) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0xde7) [0x7f32cda0f2f7]
[bt] (20) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4350) [0x7f32cda12860]
[bt] (21) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4350) [0x7f32cda12860]
[bt] (22) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (23) /lib64/libpython2.7.so.1.0(+0x6ef68) [0x7f32cd9a0f68]
[bt] (24) /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f32cd97c0b3]
[bt] (25) /lib64/libpython2.7.so.1.0(+0x590a5) [0x7f32cd98b0a5]
[bt] (26) /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f32cd97c0b3]
[bt] (27) /lib64/libpython2.7.so.1.0(+0xa1057) [0x7f32cd9d3057]
[bt] (28) /lib64/libpython2.7.so.1.0(+0x9fd6f) [0x7f32cd9d1d6f]
[bt] (29) /lib64/libpython2.7.so.1.0(PyObject_Call+0x43) [0x7f32cd97c0b3]
[bt] (30) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x1d4c) [0x7f32cda1025c]
[bt] (31) /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4350) [0x7f32cda12860]
[bt] (32) /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed) [0x7f32cda140bd]
[bt] (33) /lib64/libpython2.7.so.1.0(PyEval_EvalCode+0x32) [0x7f32cda141c2]
[bt] (34) /lib64/libpython2.7.so.1.0(+0xfb5ff) [0x7f32cda2d5ff]
[bt] (35) /lib64/libpython2.7.so.1.0(PyRun_FileExFlags+0x7e) [0x7f32cda2e7be]
[bt] (36) /lib64/libpython2.7.so.1.0(PyRun_SimpleFileExFlags+0xe9) [0x7f32cda2fa49]
[bt] (37) /lib64/libpython2.7.so.1.0(Py_Main+0xc9f) [0x7f32cda40b9f]
[bt] (38) /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f32ccc6cb15]
[bt] (39) python() [0x400721]
[14:32:58] /home/work/wuwei/project/dmlc/mxnet/dmlc-core/include/dmlc/./logging.h:300: [14:32:58] src/storage/storage.cc:38: Check failed: e == cudaSuccess || e == cudaErrorCudartUnloading CUDA: initialization error
......
```
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