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Task #2425

testing multisim with multiple ranks per simulation

Added by Mark Abraham about 1 year ago. Updated 5 months ago.

Status:
New
Priority:
Normal
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Category:
testing
Target version:
Difficulty:
uncategorized
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Description

As #2403 shows, we have a gap in testing coverage (and IIRC there were past issues when refactoring multisim and multiple ranks per simulation)


Related issues

Related to GROMACS - Bug #2403: Multidir sim with #mpiranks = 2*#sim failsClosed

History

#1 Updated by Mark Abraham about 1 year ago

I have some work in progress, but no time available right now.

#2 Updated by Mark Abraham about 1 year ago

  • Related to Bug #2403: Multidir sim with #mpiranks = 2*#sim fails added

#3 Updated by Szilárd Páll about 1 year ago

Mark Abraham wrote:

As #2403 shows, we have a gap in testing coverage (and IIRC there were past issues when refactoring multisim and multiple ranks per simulation)

The gap is actually somewhat, I'd suggest broadening this to covering better all domain/multi-rank decomposition modes (1/2/3 dim DD +/- separate PME with/without multisim).

#4 Updated by Mark Abraham 5 months ago

  • Target version changed from 2019 to 2020

We need better infrastructure and design in order to be able to cover both one-rank per sim and multiple-ranks per sim, and definitely more work for the cases Szilard suggests (and anyway we will not be able to fully cover a whole multi-dimensional array of test cases).

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