parallel ssh with gnu parallel

remote_exec.sh

#!/bin/bash

#this requires a ~/.ssh/config with your hosts
#and a /tmp/hostlist.csv with one hostname (must match to ~/.ssh/config/) per line 

# 32 parallel threads
threads=32

function remote_execute () {
   	echo $1
   	ssh -n $1 "sh -c \"$CMD\""
}
export -f remote_execute

if (("$#" == 1)); then
	export CMD=$1
	cat /tmp/hostlist.csv | parallel --no-notice -j "$threads" remote_execute '{}'
	
else
	echo 'usage:  '
	echo '	./remote_exec.sh "git clone https://github.com/reconquest/orgalorg"'	
fi