From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Fri Mar 10 2017 - 04:55:47 CST
3. Randomly also constraint errors occur, some memory uninitialized
somewhere?
Von: owner-namd-l_at_ks.uiuc.edu [mailto:owner-namd-l_at_ks.uiuc.edu] Im Auftrag
von Norman Geist
Gesendet: Freitag, 10. Mrz 2017 10:16
An: namd-l_at_ks.uiuc.edu
Betreff: namd-l: NAMD-2.12 handful of issues with CUDA
Dear experts,
somehow I have a lot of problems with the NAMD-2.12 version. All CUDA jobs
will:
1. Immediately fail for SMP single process runs when having more than
1 thread via ++ppn:
FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file
src/CudaTileListKernel.cu, function sortTileLists
on Pe 4 (gpu5 device 1): an illegal memory access was encountered
------------- Processor 4 Exiting: Called CmiAbort ------------
Reason: FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file
src/CudaTileListKernel.cu, function sortTileLists
on Pe 4 (gpu5 device 1): an illegal memory access was encountered
This happens for my own compiled versions (CUDA-7.5) as well as for the
precompiled multicore version (CUDA-6.5).
2. Fail after a random amount of steps (few ps up to tens of ns) with
either segfault or even illegal instruction O_o (MPI + CUDA-7.5 + SMP build)
I already upgraded the GPU driver but nothing changed. I remember that I
also had Problems with namd-2.11 and GBIS when using CUDA (illegal
instruction) just btw.
Any hints?
Regards
Norman Geist
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