That super computer is also a 64 bit system. That is the first 64 bit system I have ever seen myself.

With 32 bit systems Perl can only run programs in 2 gigabytes of memory. Then the programs quit. A single program can use virtual memory. But the total it uses can't exceed 2 gigabytes.

Multiple Perl programs can run at the same time. And each one can use 2 gigabyts of memory.

It took me a while to learn that this was the reason my programs were stopping. To use more memory as my Perl programs would like to do the system has to be a 64 one. Then there is essentially no memory limit. And my next main computer will be a 64 bit one.