ISCE2 uses OpenMP threads for parallelization which can be controlled via an OMP_NUM_THREADS environment variable.
Setting this variable is important to:
prevent CPU contention when running multiple processing "jobs" on the same machine
reduce runtime, especially in the topo step, by better utilizing the available resources
When manually running the DockerizedTopsApp container, OMP_NUM_THREADS can be provided as an environment variable. For HyP3 processing jobs, we'd prefer to expose this as an option for better transparency. We've done this already for our other plugins -- ASFHyP3/hyp3-gamma#428 can provide a good template for doing it here.
Notably, we we set the environment variable in main() before we load any of the processing entrypoints to ensure it gets picked up appropriately.
ISCE2 uses OpenMP threads for parallelization which can be controlled via an
OMP_NUM_THREADSenvironment variable.Setting this variable is important to:
When manually running the DockerizedTopsApp container,
OMP_NUM_THREADScan be provided as an environment variable. For HyP3 processing jobs, we'd prefer to expose this as an option for better transparency. We've done this already for our other plugins -- ASFHyP3/hyp3-gamma#428 can provide a good template for doing it here.Notably, we we set the environment variable in
main()before we load any of the processing entrypoints to ensure it gets picked up appropriately.