Using singularity image to run jobs in CHTC

run.singularity.sh

#!/bin/bash

img=$1
exec=$2
shift 2
args=$*

singularity exec -B $_CONDOR_SCRATCH_DIR:/scratch $img /scratch/$exec $args

template.submit

universe = vanilla
log = $(Cluster)_$(Process).log
error = $(Cluster)_$(Process).err
output = $(Cluster)_$(Process).out

executable = run.singularity.sh
arguments = ubuntu.img hello.sh $(Cluster) $(Process)

should_transfer_files = YES
when_to_transfer_output = ON_EXIT
transfer_input_files = ubuntu.img, hello.sh

requirements = HasSingularity == true && OpSysMajorVer == 7
request_cpus = 1
request_memory = 1GB
#increase disk request based on size of your image!
request_disk = 2GB

queue