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[WIP] CI: debug Clang thread sanitizer errors #5492

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[WIP] CI: debug Clang thread sanitizer errors #5492

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@EZoni EZoni commented Dec 3, 2024

Debug data race conditions raised by the Clang thread sanitizer CI job that was disabled in #5474.

@EZoni EZoni added the component: tests Tests and CI label Dec 3, 2024
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EZoni commented Dec 4, 2024 •
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Just copying one piece of information from the Clang documentation:

ThreadSanitizer is in beta stage. It is known to work on large C++ programs using pthreads, but we do not promise anything (yet). C++11 threading is supported with llvm libc++. The test suite is integrated into CMake build and can be run with make check-tsan command.

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EZoni commented Dec 5, 2024

This is the summary of the race condition raised by the sanitizer, seemingly referring to a race condition on the AMReX end (line 105 of Src/Base/AMReX_Random.cpp):

SUMMARY: ThreadSanitizer: data race /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp:105:27 in amrex::InitRandom(unsigned long, int, unsigned long) (.omp_outlined_debug__)

Full log preceeding that summary message:

WARNING: ThreadSanitizer: data race (pid=9014)
  Read of size 8 at 0x7ffe53cae3e8 by thread T3:
    #0 amrex::InitRandom(unsigned long, int, unsigned long) (.omp_outlined_debug__) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp:105:27 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x82877a) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #1 amrex::InitRandom(unsigned long, int, unsigned long) (.omp_outlined) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp:101:1 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x82877a)
    #2 __kmp_invoke_microtask <null> (libomp.so.5+0xdddc2) (BuildId: 5bc060b5a52d9[35](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:36)eaa6f063c7bb0d9bd35e11f99)

  Previous write of size 8 at 0x7ffe53cae3e8 by main thread:
    #0 amrex::InitRandom(unsigned long, int, unsigned long) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x828641) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #1 amrex::Initialize(int&, char**&, bool, ompi_communicator_t*, std::function<void ()> const&, std::ostream&, std::ostream&, void (*)(char const*)) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX.cpp:647:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x7eebe9) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #2 warpx::initialization::amrex_init(int&, char**&, bool) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXAMReXInit.cpp:116:16 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x67096e) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #3 warpx::initialization::initialize_external_libraries(int, char**) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXInit.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x2d696f) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #4 main /home/runner/work/WarpX/WarpX/Source/main.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x1[39](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:40)6da) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #0 amrex::InitRandom(unsigned long, int, unsigned long) (.omp_outlined_debug__) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp:105:27 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x82877a) (BuildId: 559e425[40](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:41)025a3c6ccba75684192ae77b83a3c08)
    #1 amrex::InitRandom(unsigned long, int, unsigned long) (.omp_outlined) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp:101:1 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x82877a)
    #2 __kmp_invoke_microtask <null> (libomp.so.5+0xdddc2) (BuildId: 5bc060b5a52d935eaa6f063c7bb0d9bd35e11f99)

  Previous write of size 8 at 0x7ffdff075bd8 by main thread:
    #0 amrex::InitRandom(unsigned long, int, unsigned long) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX_Random.cpp (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x8286[41](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:42)) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #1 amrex::Initialize(int&, char**&, bool, ompi_communicator_t*, std::function<void ()> const&, std::ostream&, std::ostream&, void (*)(char const*)) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX.cpp:647:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x7eebe9) (BuildId: 559e[42](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:43)540025a3c6ccba75684192ae77b83a3c08)
    #2 warpx::initialization::amrex_init(int&, char**&, bool) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXAMReXInit.cpp:116:16 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x67096e) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #3 warpx::initialization::initialize_external_libraries(int, char**) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXInit.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x2d696f) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #4 main /home/runner/work/WarpX/WarpX/Source/main.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x1396da) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)


  Location is stack of main thread.

  Location is global '??' at 0x7ffe53c90000 ([stack]+0x1e3e8)

  Thread T3 (tid=9024, running) created by main thread at:
  Location is stack of main thread.

  Location is global '??' at 0x7ffdff057000 ([stack]+0x1ebd8)

  Thread T3 (tid=9023, running) created by main thread at:
    #0 pthread_create <null> (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0xaf52f) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #0 pthread_create <null> (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0xaf52f) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #1 <null> <null> (libomp.so.5+0xb587a) (BuildId: 5bc060b5a52d935eaa6f063c7bb0d9bd35e11f99)
    #1 <null> <null> (libomp.so.5+0xb587a) (BuildId: 5bc060b5a52d935eaa6f063c7bb0d9bd35e11f99)
    #2 amrex::Initialize(int&, char**&, bool, ompi_communicator_t*, std::function<void ()> const&, std::ostream&, std::ostream&, void (*)(char const*)) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX.cpp:642:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x7eeba2) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #2 amrex::Initialize(int&, char**&, bool, ompi_communicator_t*, std::function<void ()> const&, std::ostream&, std::ostream&, void (*)(char const*)) /home/runner/work/WarpX/WarpX/build/_deps/fetchedamrex-src/Src/Base/AMReX.cpp:642:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x7eeba2) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #3 warpx::initialization::amrex_init(int&, char**&, bool) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXAMReXInit.cpp:116:16 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x67096e) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)
    #3 warpx::initialization::amrex_init(int&, char**&, bool) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXAMReXInit.cpp:116:16 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x67096e) (BuildId: 559e42[54](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:55)0025a3c6ccba75684192ae77b83a3c08)
    #4 warpx::initialization::initialize_external_libraries(int, char**) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXInit.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x2d696f) (BuildId: [55](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:56)9e42540025a3c6ccba7[56](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:57)84192ae77b83a3c08)
    #4 warpx::initialization::initialize_external_libraries(int, char**) /home/runner/work/WarpX/WarpX/Source/Initialization/WarpXInit.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x2d696f) (BuildId: 5[59](https://github.com/ECP-WarpX/WarpX/actions/runs/12150575793/job/33883599265#step:6:60)e42540025a3c6ccba75684192ae77b83a3c08)
    #5 main /home/runner/work/WarpX/WarpX/Source/main.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x1396da) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)

    #5 main /home/runner/work/WarpX/WarpX/Source/main.cpp:20:5 (warpx.1d.MPI.OMP.DP.PDP.OPMD.FFT.QED.GENQEDTABLES+0x1396da) (BuildId: 559e42540025a3c6ccba75684192ae77b83a3c08)

@EZoni EZoni force-pushed the ci_clang_thread_sanitizer branch from c46c5fd to 93c6d8e Compare December 6, 2024 21:59
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EZoni commented Dec 6, 2024

@atmyers @WeiqunZhang

I tried running with clang-18 and clang-19 (the one used since the latest commit a49c934, after installing directly from LLVM), but I keep seeing the data race condition in both cases.

@EZoni EZoni mentioned this pull request Dec 18, 2024
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