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Small fix in Perlmutter GPU sbatch script #5683

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merged 2 commits into from
Feb 19, 2025
Merged

Small fix in Perlmutter GPU sbatch script #5683

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db8cc10
cpu-per-tasks from 16 to 32 in pm gpu sbatch script
aeriforme Feb 19, 2025
524b103
Update perlmutter_gpu.sbatch
ax3l Feb 19, 2025
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4 changes: 2 additions & 2 deletions Tools/machines/perlmutter-nersc/perlmutter_gpu.sbatch
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@
# A100 80GB (256 nodes)
#S BATCH -C gpu&hbm80g
#SBATCH --exclusive
#SBATCH --cpus-per-task=16
#SBATCH --cpus-per-task=32
# ideally single:1, but NERSC cgroups issue
#SBATCH --gpu-bind=none
#SBATCH --ntasks-per-node=4
Expand All @@ -34,7 +34,7 @@ export MPICH_OFI_NIC_POLICY=GPU

# threads for OpenMP and threaded compressors per MPI rank
# note: 16 avoids hyperthreading (32 virtual cores, 16 physical)
export OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK}
export OMP_NUM_THREADS=16

# GPU-aware MPI optimizations
GPU_AWARE_MPI="amrex.use_gpu_aware_mpi=1"
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