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[CUDA] Need a robust check for MPI <-> device mapping in CUDA #3

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wavefunction91 opened this issue Sep 25, 2020 · 0 comments
Open

[CUDA] Need a robust check for MPI <-> device mapping in CUDA #3

wavefunction91 opened this issue Sep 25, 2020 · 0 comments
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bug Something isn't working cuda CUDA related Issue enhancement New feature or request

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@wavefunction91
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wavefunction91 commented Sep 25, 2020 •
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The check introduced in 7ba2f43 and reverted in 94a1f86 is not robust. Fails for the following resource configuration on Summit https://jsrunvisualizer.olcf.ornl.gov/?s1f0o11n6c7g1r11d1b27l0=

Shared memory MPI instances is not mutually exclusive from each MPI rank acknowledging a single (unique) device.

Current workaround is to ensure proper device mapping prior to integrator call based on known MPI <-> device affinity (i.e. replicate this according to a known affinity)
@wavefunction91 wavefunction91 added bug Something isn't working enhancement New feature or request labels Sep 25, 2020
@wavefunction91 wavefunction91 changed the title Need a robust check for MPI <-> device mapping in CUDA [CUDA] Need a robust check for MPI <-> device mapping in CUDA Oct 2, 2020
@wavefunction91 wavefunction91 added the cuda CUDA related Issue label Oct 2, 2020
wavefunction91 pushed a commit that referenced this issue Mar 12, 2021
@dmclark17
Merge pull request #3 from wavefunction91/master
ae2d21e 
Merges main repo into fork
wavefunction91 added a commit that referenced this issue Aug 23, 2022
@wavefunction91
Merge pull request #3 from wavefunction91/bugfix/ci-hdf5
78e8c4f 
[CI] Install HDF5 in GH Actions
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