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AztecOO: Don't use hardcoded MPI_COMM_WORLD
in AztecOO
code
#12163
AztecOO: Don't use hardcoded MPI_COMM_WORLD
in AztecOO
code
#12163
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This doesn't actually eliminate MPI_COMM_WORLD. It just hides it. Not sure this is what we want. |
Hi @JacobDomagala. The reason to remove hardcoded uses of MPI_COMM_WORLD is to allow the user to supply a communicator which is different than MPI_COMM_WORLD. Of course the default can be MPI_COMM_WORLD, but I think there needs to be a way to supply the user's communicator. |
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Status Flag 'Pre-Test Inspection' - SUCCESS: The last commit to this Pull Request has been INSPECTED by label AT: PRE-TEST INSPECTED! Autotester is Removing Label; this inspection will remain valid until a new commit to source branch is performed. |
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How is this tested? Personally, I cannot tell by looking at the code if this actually runs correctly on a sub-communicator. |
Ok I just realized that AztecOO actually provides the Comm-friendly API for MPI wrappers: As for the I'll just add comments that allow the use there. |
…, since ther're already functions that use the custom communicator
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Build InformationTest Name: Trilinos_PR_gcc-8.3.0-debug
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Build InformationTest Name: Trilinos_PR_clang-11.0.1
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Build InformationTest Name: Trilinos_PR_python3
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Build InformationTest Name: Trilinos_PR_cuda-11.4.2-uvm-off
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Status Flag 'Pre-Merge Inspection' - - This Pull Request Requires Inspection... The code must be inspected by a member of the Team before Testing/Merging |
All Jobs Finished; status = PASSED, However Inspection must be performed before merge can occur... |
4 similar comments
All Jobs Finished; status = PASSED, However Inspection must be performed before merge can occur... |
All Jobs Finished; status = PASSED, However Inspection must be performed before merge can occur... |
All Jobs Finished; status = PASSED, However Inspection must be performed before merge can occur... |
All Jobs Finished; status = PASSED, However Inspection must be performed before merge can occur... |
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Merge on Pull Request# 12163: IS A SUCCESS - Pull Request successfully merged |
@trilinos/aztecoo
Introduceaz_global_mpi_comm
global variable that defaults toMPI_COMM_WORLD
and use it instead of hardcodedMPI_COMM_WORLD
.This PR is part of the initiative to phase out the use of
MPI_COMM_WORLD
in Trilinos.EDIT:
See #12163 (comment)