Update SLURM helpers scripts

tools/pdwfs-slurm

@@ -89,15 +89,15 @@ if [ "$command" == init ]; then
 	Initialize a new pdwfs session by launching multiple Redis instances
 	on compute nodes and creating a session environment file to be sourced.
 
-	This command must be executed after pdwfs-slurm init:
+	The following command must be executed after pdwfs-slurm init:
 	$ source pdwfs.session
 
 	where:
 		-h	show this help
 		-N	number of nodes (default: 1)
 		-n	number of Redis instances PER node (default: 1)
 		-p	port of central Redis instance (default: 34000)
-		-i	network interface on which Redis servers shall bind to (default to first from `hostname -I`)"
+		-i	network interface on which Redis servers shall bind to (default to first from 'hostname -I')"
 
 	while getopts ':hN:n:p:i:' opt; do
 		case "$opt" in
@@ -146,7 +146,7 @@ if [ "$command" == init ]; then
 	fi
 
 	# launch the remote instances
-	srun -N $nNodes -n $nNodes -c $nInstances --exclusive --mem=0 redis.srun -i $nic -n $nInstances $CENTRAL_REDIS &
+	srun -N $nNodes --ntasks-per-node 1 -c $nInstances --exclusive redis.srun -i $nic -n $nInstances $CENTRAL_REDIS &
 	if [[ "$?" != "0" ]]; then
 		fail "[PDWFS][init] Error: failed to launch the remote Redis instances"
 	fi

tools/redis.srun

@@ -84,7 +84,7 @@ stop-redis() {
     ip=`get-ip $nic`
 	addr=$ip:$port
     if [[ -n "$verbose" ]]; then
-	    echo "[PDWFS] Stopping Redis instance on $addr"
+	    echo "[PDWFS] Stopping Redis instance on `hostname` at $addr"
     fi
     redis-cli -h $ip -p $port shutdown
 	redis-cli -u redis://$centralRedis srem addr $addr > /dev/null
@@ -97,7 +97,7 @@ start-redis() {
     ip=`get-ip $nic`
     addr=$ip:$port
     if [[ -n "$verbose" ]]; then
-	    echo "[PDWFS] Starting Redis instance on $addr"
+	    echo "[PDWFS] Starting Redis instance on `hostname` at $addr"
     fi
     redis-server --daemonize yes --save "" --protected-mode no --bind $ip --port $port > /dev/null
 	redis-cli -u redis://$centralRedis sadd addr $addr > /dev/null