start_supervisor

#!/bin/bash

#Make sure environment variables are set
export GADGETRON_SUPERVISOR_NODAEMON=${GADGETRON_SUPERVISOR_NODAEMON:-"true"}
export GADGETRON_RELAY_HOST=${GADGETRON_RELAY_HOST:-"127.0.0.1"}
export GADGETRON_LOG_FILENAME=${GADGETRON_LOG_FILENAME:-"/tmp/gadgetron.log"}
export OMP_THREAD_LIMIT=$(($(nproc)*2))
#export OMP_NUM_THREADS=$(nproc)
export OMP_WAIT_POLICY=passive
#export OMP_DYNAMIC=false
#export OMP_PROC_BIND=true
export OPENBLAS_NUM_THREADS=1

# if want to ensure high numerical reproducibility, turn on this option
# export MKL_CBWR=COMPATIBLE

# Find unused port
# Trick copied from https://unix.stackexchange.com/questions/55913
# The returned port might not really be free in case concurrent containers
# are running this piece of code at the same time. We allow for a few
# unsuccessfull trials to account for this.
NBTRIALS=5
#LOWER=9001  # Lower bound on searched port numbers
#UPPER=9099  # Upper bound on searched port numbers
read LOWER UPPER < /proc/sys/net/ipv4/ip_local_port_range
echo "LOWER: $LOWER / UPPER: $UPPER"
SUCCESS=0
for ((TRIAL=1; TRIAL<=$NBTRIALS; TRIAL++))
do
    echo "Trying to launch gadgetron, trial $TRIAL..."
    for ((SUPERVISORD_PORT =$LOWER; SUPERVISORD_PORT<=$UPPER; SUPERVISORD_PORT++))
    do
        export SUPERVISORD_PORT
	echo "Trying port $SUPERVISORD_PORT..."
        unlink /var/run/supervisor.sock
	/usr/bin/supervisord -c /opt/supervisord.conf && SUCCESS=1 && break 2 
    done
    
done

if [ "$SUCCESS" = "1" ]
then
    echo "Successfully launched supervisor on port $SUPERVISORD_PORT."
else
    echo "Failed to launch supervisor."
fi