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Summit: no -n in jsrun #1114

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Jun 24, 2020
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Summit: no -n in jsrun #1114

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Summit: no `-n` in jsrun
ax3l Jun 23, 2020
19ca36b
Summit Runs: OMP, GPU-Aware MPI, Latency
ax3l Jun 23, 2020
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14 changes: 8 additions & 6 deletions Tools/BatchScripts/batch_summit.sh
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Original file line number Diff line number Diff line change
@@ -1,23 +1,25 @@
#!/bin/bash

# Copyright 2019 Maxence Thevenet
# Copyright 2019-2020 Maxence Thevenet, Axel Huebl
#
# This file is part of WarpX.
#
# License: BSD-3-Clause-LBNL
#
# Refs.:
# https://jsrunvisualizer.olcf.ornl.gov/?s4f0o11n6c7g1r11d1b1l0=
# https://docs.olcf.ornl.gov/systems/summit_user_guide.html#cuda-aware-mpi

#BSUB -P <allocation ID>
#BSUB -W 00:10
#BSUB -nnodes 2
#BSUB -alloc_flags smt4
#BSUB -J WarpX
#BSUB -o WarpXo.%J
#BSUB -e WarpXe.%J

module load gcc
module load cuda

omp=1
export OMP_NUM_THREADS=${omp}

num_nodes=$(( $(printf '%s\n' ${LSB_HOSTS} | sort -u | wc -l) - 1 ))
jsrun -n ${num_nodes} -a 6 -g 6 -c 6 --bind=packed:${omp} <path/to/executable> <input file> > output.txt
export OMP_NUM_THREADS=1
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Would it be useful to add a comment/NOTE/TODO that explains that we are setting OMP_NUM_THREADS because "(note: needs export OMP_NUM_THREADS=1 for the way we #ifdef OpenMP currently...)".
In case someone decides to ramp up OMP_NUM_THREADS without knowing what in the code will not work?

jsrun -r 6 -a 1 -g 1 -c 7 -l GPU-CPU -d packed -b rs --smpiargs="-gpu" <path/to/executable> <input file> > output.txt
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I tried at https://jsrunvisualizer.olcf.ornl.gov/?s4f0o01n6c7g1r11d1b1l0= The GPU-CPU option is not available.

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Yes, I think that's just a limitation of the visualizer.