sim-se: gpu-tests are failing

[ivanaamit]

sim-se: gpu-tests are failing

[ivanaamit]

@nmosier, could you please take a look at this issue? The commit that was merged yesterday is causing tests to fail. We tried to fix it but didn't find the appropriate solution. Thank you.

[nmosier]

Oh no! I think the problem is because the statx struct is only defined on Linux hosts since v4.11. Are the GPU tests running on older Linux hosts (pre 4.11) or a different os (e.g., macOS)?

It could also be the members in struct statx has changed over time, and stx_mnt_id was added in a more recent version of the kernel than the one the GPU tests are running on.

[nmosier]

I can submit a patch ASAP (by the end of today). I can reimplement statxFunc() to instead use a host system call to stat(2) instead of statx(2), so that it will work on both older Linux kernels and other OSes.

[BobbyRBruce]

Oh no! I think the problem is because the statx struct is only defined on Linux hosts since v4.11. Are the GPU tests running on older Linux hosts (pre 4.11) or a different os (e.g., macOS)?

It could also be the members in struct statx has changed over time, and stx_mnt_id was added in a more recent version of the kernel than the one the GPU tests are running on.

I believe these tests are running on 5.14. They are running in the they are running on Ubuntu 20.04. According to this: https://ubuntu.com/about/release-cycle#ubuntu-kernel-release-cycle, should be running with Linux 5.14.

However, I think this solution/patch would be worth checking. We have a way to reproduce this error so should be able to quickly verify if this fix works.

[nmosier]

I submitted a patch. Let me know if that fixes the issue!

[BobbyRBruce]

I've verified that this patch appears to fix this issue. I use docker run -u ${UID}:${GID} -v $(pwd):/gem5 -w /gem5 -it --rm ghcr.io/gem5/gcn-gpu:latest scons build/VEGA_X86/gem5.opt -j8 : on the develop branch it fails with the error outlined, but completes fine with #989.

[powerjg]

Thanks for the quick fix!!