[gmx-developers] GROMACS OpenCL on Gallium

[Szilárd Páll]

Hi,

All three segfaults produce a backtrace similar to this:

[...]
#2  0x00007fcf53618632 in ?? () from
/usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1
#3  0x00007fcf58b6fdca in sync_ocl_event (stream=0x7fcf4c820160,
ocl_event=0x7fcf4c031380)
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/gromacs/mdlib/nbnxn_ocl/nbnxn_ocl.cpp:331
#4  0x00007fcf58b70f7d in nbnxn_gpu_launch_cpyback (nb=0x7fcf4c030f40,
nbatom=0x7fcf4c022ca0,
    flags=1015, aloc=0)
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/gromacs/mdlib/nbnxn_ocl/nbnxn_ocl.cpp:952
#5  0x00007fcf58b65fcc in do_force_cutsVERLET ()
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/gromacs/mdlib/sim_util.cpp:1061
#6  0x00007fcf58b68e02 in do_force ()
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/gromacs/mdlib/sim_util.cpp:2009
#7  0x000000000041ac0e in do_md ()
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/programs/mdrun/md.cpp:1078
#8  0x000000000042835b in mdrunner ()
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/programs/mdrun/runner.cpp:1282
#9  0x000000000042528e in mdrunner_start_fn (arg=0xb8ddd0)
    at
/mnt/workspace/Gromacs_Gerrit_5_1-test-opencl-slave/d27c5006/gromacs/src/programs/mdrun/runner.cpp:186
[...]

This could be due to an old CUDA being used. I'll check that, but in any
case, especially for NVIDIA OpenCL that we know it's been buggy (and as far
as I know still is), we probably really should not use anything older than
7.0 or 7.5.

The other failures on the AMD test machine seem to be caused by the tests
being called in an incompatible way, although I have the feeling that
something is off with that too (because tMPI+OpenCL multi-GPU should work,
I though).

--
Szilárd

On Mon, Dec 7, 2015 at 2:46 PM, Vedran Miletić <rivanvx at gmail.com> wrote:

> Szilard, Mark,
>
> thanks for looking into this.
>
> 2015-12-07 14:29 GMT+01:00 Szilárd Páll <pall.szilard at gmail.com>:
> > http://jenkins.gromacs.org/job/Gromacs_Gerrit_5_1-test-opencl-slave/14
>
> Didn't know we had that one. Very nice.
>
> Regards,
> Vedran
>
> --
> Vedran Miletić
> http://vedranmileti.ch/
> --
> Gromacs Developers mailing list
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