VERSION: GNU parallel 20240122

I realize that this may seem like a duplicate report; however, I am seeing this problem on a particular HPC system where outgoing SSH connections are disabled. As a result of walking through a debugger, I have traced this problem to the result of $sshlogin->maxlength() on line 4907:

        $Global::minimal_command_line_length =
            ::min($Global::minimal_command_line_length, $sshlogin->maxlength());

The output of that function is 81; therefore, the final value of $Global::usable_command_line_length = -1459 evaluated on lines 4910-4912.

The show-limits output is correspondingly as follows:

%> parallel --show-limits
Maximal size of command: 261306
Maximal usable size of command: -1459

It is currently unclear to me how to best resolve this problem.