Have you tried simply running the Perl script via the ssh executable?

ssh account@remote.machine.intern -c 'perl -w whatever.pl'
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If you want to launch that from Perl, the following could work on both, Windows and Linux, presuming you have passwordless keys and/or ssh-agent running to handle the authentication:

use strict;
my @machines = qw( worker1 worker2 worker3 );

my @cmd = @ARGV;
my $ssh = 'ssh';

for my $machine (@machines) {
    my @commandline = $ssh, $machine, '-c', @cmd;
    print "[$machine] @commandline\n";
    system(@commandline) == 0
        or warn "Couldn't launch >>@cmd<< on $machine: $! / $?";
};
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The above will wait for each task on each machine to finish. If you do want to run all tasks in parallel, you will have to spawn the processes differently, depending on how your OS lets you spawn processes in parallel. On Windows, use system( 1, ...) or system('start',...), and on Unixish shells, you can likely use the "background operator" &:

...
    # Linux parallel, watch out for quoting with your shell!
    system("@commandline &") == 0
...
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Windows is nicer here but has the drawback that you can only run 63 processes that way in parallel unless you compile your own Perl:

...
    # Windows parallel, watch out for quoting with your shell!
    system(1, @commandline) == 0
...
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Is there any other way other than using Net:SSH2.... I want my script to run in both network... Linux as well as windows

So? libssh2 is cross-platform so I see no issue with using Net::SSH2 with both Linux and Windows (I can't test it on Windows because I don't swing that way, but there should be no problem in principle).

Sure there are other ways of invoking a script across a network (running it as a CGI comes to mind), but they all need to solve the problem of authentication and confidentiality. ssh does this for you in a comfortable and secure way out of the box why not use it?

Actually I am trying to login from Windows machine(user –abc) to linux machine(user-xyz) using ssh protocol. I have generated the encryption key using Putty Gen & copied the same in the linux machine : $home/.ssh/authentication_key. But still my script is giving the error: - Permission denied (publickey, password, keyboard-interactive). It would be really great if you can help me on this. regards kapila.kohli@gmail.com