Compiler option for GCHP load balance in chemistry#532
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Looks good but we need a CHANGELOG.md update.
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…lt=on To turn off, build with -DMPI_LOAD_BALANCE=n Signed-off-by: Lizzie Lundgren <elundgren@seas.harvard.edu>
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Name and Institution (Required)
Name: Lizzie Lundgren
Institution: Harvard University
Describe the update
Add CMake option for turning MPI load balancing on/off. It will be on by default. Turn off by building with:
-DMPI_LOAD_BALANCE=nThere is a companion PR with this update:
geoschem/geos-chem#3015
Expected changes
MPI_LOAD_BALANCE will appear in the messages during the configure stage indicating whether it is on or off. GCHP chemistry will be faster with it on (default). I find the benchmark simulation to be 20% faster on the Harvard Cannon cluster using 96 cores.
Reference(s)
None
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