#!/bin/bash

# use a tmp-dir in a RAM disk
mkdir -p /dev/shm/pissue || exit
cd /dev/shm/pissue || exit

# cleanup
ls | xargs -rd '\n' rm

# this seems to be important
export PARALLEL="--load 100% --verbose"
echo PARALLEL=$PARALLEL

echo -n "cores on $HOSTNAME: "
parallel --number-of-cores
echo

for i in $(seq 2 10); do
  i2=$[i*i]
  echo creating $i2 files:
  seq $i2 | parallel -X touch
  echo deleting $i2 files:
  ls -v | parallel -X rm
  echo
done

rmdir /dev/shm/pissue