larroy edited a comment on issue #10856: Failed OpenMP assertion when loading MXNet compiled with DEBUG=1 URL: https://github.com/apache/incubator-mxnet/issues/10856#issuecomment-505162890 Adding stack trace. Tried to reproduce in another machine and the crash didn't happen, but get assertion now and then. [bt.txt](https://github.com/apache/incubator-mxnet/files/3322437/bt.txt) ``` Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `py3_venv/bin/python fc.py'. Program terminated with signal SIGABRT, Aborted. #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 [Current thread is 1 (Thread 0x7fbd94581700 (LWP 17687))] #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007fbda3583801 in __GI_abort () at abort.c:79 #2 0x00007fbd3dcda8b3 in __kmp_abort_process () at ../../src/kmp_runtime.cpp:492 #3 0x00007fbd3dcc6277 in __kmp_fatal (message=...) at ../../src/kmp_i18n.cpp:894 #4 0x00007fbd3dcd86d5 in __kmp_register_library_startup () at ../../src/kmp_runtime.cpp:6702 #5 0x00007fbd3dcd99d4 in _INTERNAL_25_______src_kmp_runtime_cpp_6dd760e2::__kmp_do_serial_initialize () at ../../src/kmp_runtime.cpp:6821 #6 _INTERNAL_25_______src_kmp_runtime_cpp_6dd760e2::__kmp_do_middle_initialize () at ../../src/kmp_runtime.cpp:7137 #7 __kmp_middle_initialize () at ../../src/kmp_runtime.cpp:7246 #8 0x00007fbd3dcbb44e in __kmp_api_omp_get_num_procs () at ../../src/kmp_ftn_entry.h:615 #9 0x00007fbd35d2b9ce in mkl_serv_get_num_stripes () from /opt/intel/mkl/lib/intel64/libmkl_intel_thread.so #10 0x00007fbd35e9bdd4 in mkl_blas_sgemm () from /opt/intel/mkl/lib/intel64/libmkl_intel_thread.so #11 0x00007fbd3d245719 in sgemm_ () from /opt/intel/mkl/lib/intel64/libmkl_intel_lp64.so #12 0x00007fbd3d2a5510 in cblas_sgemm () from /opt/intel/mkl/lib/intel64/libmkl_intel_lp64.so #13 0x00007fbd9e4654f9 in mkldnn::impl::cpu::extended_sgemm (transa=0x7fbd9e93183f "T", transb=0x7fbd9e931841 "N", M=0x7fbd9457f744, N=0x7fbd9457f740, K=0x7fbd9457f748, ```
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