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Posted to discuss-archive@tvm.apache.org by mh via Apache TVM Discuss <no...@discuss.tvm.ai> on 2021/05/25 11:55:02 UTC
[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
TVM_REGISTER_GLOBAL("ir.RegisterOpLowerIntrinsic") in src/ir/op.cc should be built for runtime. Without building this file the VTA won't run after [PR #7809](https://github.com/apache/tvm/pull/7809/). This has sth to do with [Problem - RPC server on ZCU104](https://discuss.tvm.apache.org/t/problem-rpc-server-on-zcu104/9881). CMakefiles should be fixed for this.
Details: those three functions in vta/python/vta/environment.py are decorated by @register_intrin_lowering after the PR, which locates in python/tvm/ir/op.py and depends on _ffi_api, which loads the very function in src/ir/op.cc ,which seems not built with runtime only. Full build of course we won't have this problem.
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[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
Posted by Junru Shao via Apache TVM Discuss <no...@discuss.tvm.ai>.
I see. @pr3dat0r2k would you mind sharing the error message and the name of the unittest that failed?
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[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
Posted by mh via Apache TVM Discuss <no...@discuss.tvm.ai>.
true but if you dont build the whole tvm on board the vta simply wont run
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[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
Posted by Junru Shao via Apache TVM Discuss <no...@discuss.tvm.ai>.
`src/runtime/` is built for runtime, `src/ir/` is used for unified IR, which is part of the compiler
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[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
Posted by mh via Apache TVM Discuss <no...@discuss.tvm.ai>.
[quote="junrushao1994, post:4, topic:10084"]
we could simply ignore the error when registration function is not found.
[/quote]
maybe not. i tried 1.delete these three functions 2.use the older register_func version. both of these failed the vta gemm test. the host side of tvm cannot identify the func tir.vta.coproc_dep_push blablabla(this might have sth to do with the host side of the tvm which is a bit older and dont have this commit, but it seems that the gemm test do need these functions to be registered correctly)
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[Apache TVM Discuss] [Questions] ir.RegisterOpLowerIntrinsic seems
not built for runtime
Posted by Junru Shao via Apache TVM Discuss <no...@discuss.tvm.ai>.
Thanks for the explanation! Now I could understand.
The original mechanism for intrinsic lowering uses `tvm.register_func`, which is implemented in the TVM runtime, while the new `register_intrin_lowering ` is instead implemented in the TVM compiler, which will throw out an error when if the TVM is a runtime-only build.
This file is loaded regardless of TVM is built fully or runtime-only, which causes the issue you mentioned: https://github.com/apache/tvm/blob/main/vta/python/vta/environment.py. To address this issue, we could simply ignore the error when registration function is not found.
A PR is more than appreciated! CC: @zxybazh
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