#!/usr/bin/perl -w use strict; my @strides; my $x = 1; for(my $i = 0; $i < 400; $i++) { $strides[$i] = $i; $x *= 2; } $|=1; foreach my $s (@strides) { print "$s\t"; system qq(./stride foo.out 3 500 4096 $s); }