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#!/usr/bin/perl -w
#==========================================================================
# matmul_gendata.pl
#
# Author : Christopher Batten (cbatten@mit.edu)
# Date : April 29, 2005
#
(our $usageMsg = <<'ENDMSG') =~ s/^\#//gm;
#
# Simple script which creates an input data set and the reference data
# for the matmul benchmark.
#
ENDMSG
use strict "vars";
use warnings;
no warnings("once");
use Getopt::Long;
#--------------------------------------------------------------------------
# Command line processing
#--------------------------------------------------------------------------
our %opts;
sub usage()
{
print "\n";
print " Usage: matmul_gendata.pl [options] \n";
print "\n";
print " Options:\n";
print " --help print this message\n";
print " --size size of input data [1000]\n";
print " --seed random seed [1]\n";
print "$usageMsg";
exit();
}
sub processCommandLine()
{
$opts{"help"} = 0;
$opts{"size"} = 1000;
$opts{"seed"} = 1;
Getopt::Long::GetOptions( \%opts, 'help|?', 'size:i', 'seed:i' ) or usage();
$opts{"help"} and usage();
}
#--------------------------------------------------------------------------
# Helper Functions
#--------------------------------------------------------------------------
sub printArray
{
my $arrayName = $_[0];
my $arrayRef = $_[1];
my $numCols = 20;
my $arrayLen = scalar(@{$arrayRef});
print "static data_t ".$arrayName."[ARRAY_SIZE] = \n";
print "{\n";
if ( $arrayLen <= $numCols ) {
print " ";
for ( my $i = 0; $i < $arrayLen; $i++ ) {
print sprintf("%3d",$arrayRef->[$i]);
if ( $i != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
else {
my $numRows = int($arrayLen/$numCols);
for ( my $j = 0; $j < $numRows; $j++ ) {
print " ";
for ( my $i = 0; $i < $numCols; $i++ ) {
my $index = $j*$numCols + $i;
print sprintf("%3d",$arrayRef->[$index]);
if ( $index != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
if ( $arrayLen > ($numRows*$numCols) ) {
print " ";
for ( my $i = 0; $i < ($arrayLen-($numRows*$numCols)); $i++ ) {
my $index = $numCols*$numRows + $i;
print sprintf("%3d",$arrayRef->[$index]);
if ( $index != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
}
print "};\n\n";
}
#--------------------------------------------------------------------------
# Matmul
#--------------------------------------------------------------------------
# http://answers.oreilly.com/topic/418-how-to-multiply-matrices-in-perl/
sub mmult {
my ($m1,$m2) = @_;
my ($m1rows,$m1cols) = matdim($m1);
my ($m2rows,$m2cols) = matdim($m2);
my $result = [ ];
my ($i, $j, $k);
for $i (range($m1rows)) {
for $j (range($m2cols)) {
for $k (range($m1cols)) {
$result->[$i][$j] += $m1->[$i][$k] * $m2->[$k][$j];
}
}
}
return $result;
}
sub range { 0 .. ($_[0] - 1) }
sub veclen {
my $ary_ref = $_[0];
my $type = ref $ary_ref;
if ($type ne "ARRAY") { die "$type is bad array ref for $ary_ref" }
return scalar(@$ary_ref);
}
sub matdim {
my $matrix = $_[0];
my $rows = veclen($matrix);
my $cols = veclen($matrix->[0]);
return ($rows, $cols);
}
#--------------------------------------------------------------------------
# Main
#--------------------------------------------------------------------------
sub main()
{
processCommandLine();
srand($opts{"seed"});
# create random input arrays
my $mat_values1;
my $mat_values2;
for ( my $i = 0; $i < $opts{"size"}; $i++ ) {
for ( my $j = 0; $j < $opts{"size"}; $j++ ) {
$mat_values1->[$i][$j] = int(rand(4));
$mat_values2->[$i][$j] = int(rand(4));
}
}
# perform matmul
my $mat_results = mmult( $mat_values1, $mat_values2 );
# translate 2d arrays to 1d-somethings (I don't know how to code in perl - Chris)
my @values1;
my @values2;
my @results;
for ( my $i = 0; $i < $opts{"size"}; $i++ ) {
for ( my $j = 0; $j < $opts{"size"}; $j++ ) {
my $value1 = $mat_values1->[$i][$j];
my $value2 = $mat_values2->[$i][$j];
my $result = $mat_results->[$i][$j];
push( @values1, $value1 );
push( @values2, $value2 );
push( @results, $result );
}
}
print "\n\#define ARRAY_SIZE ".($opts{"size"}*$opts{"size"})." \n\n";
print "\n\#define DIM_SIZE ".$opts{"size"}." \n\n";
printArray( "input1_data", \@values1 );
printArray( "input2_data", \@values2 );
printArray( "verify_data", \@results);
}
main();
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