gkfs script: Allow specific srun arguments via config file

scripts/run/gkfs

@@ -92,7 +92,7 @@ start_daemon() {
             NODE_NUM=$(scontrol show hostname "${node_list}" | wc -l)
         fi
         # Setting up base srun cmd
-        srun_cmd="srun --disable-status -N ${NODE_NUM} --ntasks=${NODE_NUM} --ntasks-per-node=1 --overcommit --contiguous --cpus-per-task=${CPUS_PER_TASK} --oversubscribe --mem=0 "
+        srun_cmd="srun --disable-status -N ${NODE_NUM} --ntasks=${NODE_NUM} --cpus-per-task=${CPUS_PER_TASK} ${SRUN_ARGS} "
     fi
 
     if [[ ${VERBOSE} == true ]]; then

scripts/run/gkfs.conf

@@ -10,12 +10,17 @@ LIBGKFS_HOSTS_FILE=./gkfs_hostfile
 # daemon configuration
 DAEMON_ROOTDIR=/dev/shm/gkfs_rootdir
 DAEMON_MOUNTDIR=/dev/shm/gkfs_mountdir
-DAEMON_NUMACTL=false
-DAEMON_CPUNODEBIND="1"
-DAEMON_MEMBIND="1"
+# path to daemon pid file; created where the script is run
 DAEMON_PID_FILE=./gkfs_daemon.pid
+# additional daemon arguments (see `gkfs_daemon -h`)
 DAEMON_ARGS=""
+# Use Slurm's srun to start the daemons on multiple nodes and set specific srun args
 USE_SRUN=false
+SRUN_ARGS="--ntasks-per-node=1 --overcommit --contiguous --oversubscribe --mem=0"
+# use numactl to pin daemon to socket
+DAEMON_NUMACTL=false
+DAEMON_CPUNODEBIND="1"
+DAEMON_MEMBIND="1"
 
 # logging
 GKFS_DAEMON_LOG_LEVEL=info