Heh :-) I think I found your problem:

see this link on 4Gb limits /w perl5.6.1/Solaris:

If you do want to be able to allocate more than 4GB memory inside perl, then you should use the Solaris malloc, since the perl malloc breaks when dealing with more than 2GB of memory. You can do this with

sh Configure -Uusemymalloc

Note that this will break binary compatibility with any version that was not compiled with -Uusemymalloc.

You can test if your perl interpreter was compiled with usemymalloc this flag by doing

> perl -V|grep malloc
[download]

It should show "usemymalloc=n" if your perl supports more than 4 Gb. If it doesn't, you need to recompile perl or get another binary. I suggest using the most recent stable perl for this (5.8.6 at the moment).

I'm wondering if you can't get the algorithm to work without taking up more than 4Gb, though. :-)