[Openmp-dev] warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)

[Itaru Kitayama via Openmp-dev]

Shilei,

I tried to debug the hang with CUDA-gdb, though  not sure if I was using
it correctly. If there are other general approaches, would you let us know?

On Sun, Dec 12, 2021 at 8:38 Shilei Tian <tianshilei1992 at gmail.com> wrote:

> If the function call is to get the device environment variable from the
> image, that could return CUDA_ERROR_NOT_FOUND (500). However, it doesn't
> affect the execution of the program. The hang could be something else.
>
>
>
> --
>
> Regards,
>
> Shilei Tian
>
>
>
> *From: *Openmp-dev <openmp-dev-bounces at lists.llvm.org> on behalf of Itaru
> Kitayama via Openmp-dev <openmp-dev at lists.llvm.org>
> *Date: *Sunday, December 5, 2021 at 5:03 AM
> *To: *openmp-dev <openmp-dev at lists.llvm.org>
> *Subject: *[Openmp-dev] warning: Cuda API error detected:
> cuModuleGetGlobal_v2 returned (0x1f4)
>
> Hi,
> My offloading app runs correctly on host, but gets stuck (no progress)
> on the device.
>
> In a cuda gdb session I see:
>
> (cuda-gdb) r
>
> The program being debugged has been started already.
>
> Start it from the beginning? (y or n) y
>
> Starting program:
> /p/project/cjinb33/kitayama1/opt/nest-clang-offload/bin/nest
> hpc_benchmark.sli
>
> warning: Cannot parse .gnu_debugdata section; LZMA support was
> disabled at compile time
>
> [Thread debugging using libthread_db enabled]
>
> Using host libthread_db library "/usr/lib64/libthread_db.so.1".
>
> warning: File
> "/p/software/jurecadc/stages/2020/software/GCCcore/10.3.0/lib64/libstdc++.
> so.6.0.28-gdb.py"
> auto-loading has been declined by your `auto-load safe-path' set to
> "$debugdir:$datadir/auto-load".
>
> warning: Cannot parse .gnu_debugdata section; LZMA support was
> disabled at compile time
>
> warning: Cannot parse .gnu_debugdata section; LZMA support was
> disabled at compile time
>
> OMP: Warning #249: OMP_TARGET_OFFLOAD: syntax error, using DEFAULT.
>
> warning: Cannot parse .gnu_debugdata section; LZMA support was
> disabled at compile time
>
> [Detaching after fork from child process 27044]
>
> [New Thread 0x15554a92d700 (LWP 27050)]
>
> [New Thread 0x15554a12c700 (LWP 27051)]
>
> virtual void nest::SimulationManager::initialize() Map this pointer at
> 0x15552e1021a8
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
>
> warning: Cuda API error detected: cuModuleGetGlobal_v2 returned (0x1f4)
>
> Should I be concerned about the API error?
>
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