[DEV] MPI submission example, utils.py adjusted for mpi#50
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garcs2 wants to merge 2 commits intoIdahoLabResearch:mainfrom
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[DEV] MPI submission example, utils.py adjusted for mpi#50garcs2 wants to merge 2 commits intoIdahoLabResearch:mainfrom
garcs2 wants to merge 2 commits intoIdahoLabResearch:mainfrom
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This should now resolve #36, with mpi parallelization now available for depletion. This PR is contingent on this PR, which allows for more than one MPI rank within OpenMC to launch specifically for depletion. Example has been provided on mpi usage within an LTMR example found in
examples/watts_exec_LTMR_mpi, with example submission script for users to see.Importantly, given that
openmc.run()andintegrator.integrate()have fundamental differences in execution, there has to be a decision made on whether MPI is provided for depletion or singular eigenvalue calculations, but not both within the same script. For that reasonopenmc.run()has been commented out since it provides no utility as depletion is ran in every case inclusive of the SD Margin Calc and ITC. Uncommentingopenmc.run()causes the job to crash sinceopenmc.runspawns a subprocess that tries to initialize its own MPI environment which clashes with the parentmpirunprocess in the submisssion script.