Perlmutter: Set CRAY_ACCEL_TARGET for GPU-Enabled MPI

[tmsclark]

When I try to run a job on Perlmutter i obtain the following error:

MPIDI_CRAY_init: GPU_SUPPORT_ENABLED is requested, but GTL library is not linked

And in order to run the job it is necessary to add the line:
export CRAY_ACCEL_TARGET=nvidia80 in the warpx.profile document.
As it is said in the Perlmutter documentation: https://docs.nersc.gov/systems/perlmutter/

[ax3l]

Thanks a lot! This probably came in with the latest system update :)