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Omit OMP_NUM_THREADS in MPI-only runs #3085

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merged 2 commits into from
Jun 5, 2019

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amametjanov
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Omit OMP_NUM_THREADS in MPI-only runs

Test suite: SMS.f19_g16.X
Test baseline: mpi-only vs. threaded
Test namelist changes: none
Test status: [bit for bit]

Fixes #3082

User interface changes?: none

Update gh-pages html (Y/N)?: N

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Thanks

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@jgfouca any reason not to merge this one?

@jgfouca jgfouca merged commit 89fad14 into master Jun 5, 2019
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jgfouca commented Jun 5, 2019

Didn't realize this was waiting on me, sry.

@jgfouca jgfouca deleted the azamat/threading/dont-set-threads-for-mpi-only-runs branch June 5, 2019 19:08
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jgfouca commented Jun 10, 2019

@amametjanov , we're going to have to revert this PR. Both CESM and E3SM have many machines where the mpirun command is configured to use OMP_NUM_THREADS from the environment. If it's not set, then CIME will crash.

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Okay

jgfouca added a commit that referenced this pull request Jun 11, 2019
…-threads-for-mpi-only-runs"

This reverts commit 89fad14, reversing
changes made to 5c43a15.
rfiorella pushed a commit to rfiorella/cime that referenced this pull request Jun 13, 2024
…t-set-threads-for-mpi-only-runs"

This reverts commit 89fad14, reversing
changes made to 5c43a15.
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Don't set OMP_NUM_THREADS in MPI-only runs
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