larroy commented on issue #10856: Failed OpenMP assertion when loading MXNet compiled with DEBUG=1 URL: https://github.com/apache/incubator-mxnet/issues/10856#issuecomment-455633028 What's worse is that when executing this test, you can easily create a segmentation fault, by hitting ^C so we are UB land: ``` python tests/python/unittest/test_gluon_data.py ``` ``` OMP: Error #13: Assertion failure at kmp_runtime.cpp(6479). OMP: Hint: Please submit a bug report with this message, compile and run commands used, and machine configuration info including native compiler and operating system versions. Faster response will be obtained by including all program sources. For information on submitting this issue, please see https://bugs.llvm.org/. Assertion failure at kmp_runtime.cpp(6479): __kmp_thread_pool == __null. OMP: Error #13: Assertion failure at kmp_runtime.cpp(6479). OMP: Hint: Please submit a bug report with this message, compile and run commands used, and machine configuration info including native compiler and operating system versions. Faster response will be obtained by including all program sources. For information on submitting this issue, please see https://bugs.llvm.org/. Assertion failure at kmp_runtime.cpp(6479): __kmp_thread_pool == __null. OMP: Error #13: Assertion failure at kmp_runtime.cpp(6479). OMP: Hint: Please submit a bug report with this message, compile and run commands used, and machine configuration info including native compiler and operating system versions. Faster response will be obtained by including all program sources. For information on submitting this issue, please see https://bugs.llvm.org/. ^C[INFO] Setting test np/mx/python random seeds, use MXNET_TEST_SEED=1709269671 to reproduce. ---------------------------------------------------------------------- Ran 3 tests in 12.296s OK Segmentation fault: 11 Stack trace returned 10 entries: [bt] (0) /home/piotr/devel/mxnet/mxnet/python/mxnet/../../build/libmxnet.so(dmlc::StackTrace[abi:cxx11]()+0x54) [0x7fef667f38e5] [bt] (1) /home/piotr/devel/mxnet/mxnet/python/mxnet/../../build/libmxnet.so(+0x4ba60be) [0x7fef69ba40be] [bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7fefbeb324b0] [bt] (3) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0xc7c0d) [0x7fefb8857c0d] [bt] (4) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0xc7d02) [0x7fefb8857d02] [bt] (5) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0x6ebca) [0x7fefb87febca] [bt] (6) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0x56e9d) [0x7fefb87e6e9d] [bt] (7) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0x5727c) [0x7fefb87e727c] [bt] (8) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0x576b4) [0x7fefb87e76b4] [bt] (9) /home/piotr/devel/mxnet/mxnet/build/3rdparty/openmp/runtime/src/libomp.so(+0x56d4f) [0x7fefb87e6d4f] ```
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