initial commit

par

+#!/bin/bash
+
+time_limit=3600s
+
+set -e
+
+help ()
+{
+    cat << EOF
+
+Syntax: $1 [-t timelimit]
+
+    Start local executables concurrently,
+    limited by the number of cores reported by 'nproc' ($(nproc) on this host).
+
+Options:
+    -t timelimit    (default: ${time_limit})
+
+EOF
+    exit 1
+}
+
+while [ ! -z "$1" ]; do
+    case "$1" in
+    -t) time_limit="$2"; shift;;
+    -h) help "$0";; 
+    *)  echo "argument $1 not understood"; help "$0"; exit 1;;
+    esac
+    shift
+done
+
+ncpu=$(nproc)
+pids=.pid
+
+mkdir -p ${pids}
+rm -f ${pids}/*
+
+for exec in *; do
+
+    # must be executable
+    [ -x ${exec} ] || continue
+    
+    # log file must not already exist
+    [ -r ${exec}-log.txt ] && { echo "${exec}: logfile already exists"; continue; }
+
+    while true; do
+        ucpu=$(ls ${pids} | wc -l)
+        if [ ${ucpu} = ${ncpu} ]; then
+            echo "(all cpu used)"
+            sleep 1
+        else
+            echo "start '${exec}'"
+            ( set +e; \time timeout ${time_limit} ./${exec} >& ${exec}-log.txt & pid=$!; echo ${exec} > ${pids}/${pid}; wait ${pid}; rm -f ${pids}/${pid}; ) &
+            break
+        fi
+    done
+done
+
+echo ""
+echo "all started"
+
+while true; do
+    ucpu=$(ls ${pids} | wc -l)
+    if [ ${ucpu} = 0 ]; then
+        echo "all finished"
+        break
+    fi
+done