#!/usr/bin/perl -w
use strict;
use warnings;
use Net::SSH2;

my $ssh2 = Net::SSH2->new();
$ssh2->connect("myhost.com") or die ("SSH2 Connect Error: $!");

$ssh2->auth_password($user, $pass) or die;
my $chan1 = $ssh2->channel();
$chan1->blocking(0);
$chan1->exec("./a.out &");
$chan1->close;
$ssh2->disconnect();