Bash script to run valgrind a number of times and collect the peak memory usages.

runValgrind.sh

#!/bin/bash
echo "Size, Max Heap"
for i in {1..10}
do
  SIZE=$(echo "2^"$i | bc)
  RES=$(valgrind --tool=massif --time-unit=B ./a.out 0 $SIZE &> /dev/null)
  MEM=$(grep -B 2 "heap_tree=peak" massif.out.* | awk -F '\n' 'ln ~ /^$/ { ln = "matched"; print $1 } $1 ~ /^--$/ { ln = "" }')
  MEMARR=(${MEM//=/ })
  echo $SIZE", "${MEMARR[1]}
  rm massif.out.*
done