The mechanism for sharing, threads::shared, doesn't look very practical for sharing a complex 1GB AI model. It looks like the code constructing the model would have to be modified a fair amount to construct things in the right order and mark every variable shared. Maybe you know a higher-level way to do this though.

For read-write data, I do think threads would use less memory if the vast majority of the program is the shared AI model. For read-only data, COW will do pretty well at sharing with no changes to the code and will share things that are outside of the AI model as well if they don't get modified.

COW with threads would help with all the variables that you don't have an easy way to mark shared but don't need separate copies of, e.g. all of the data used by all of the CPAN modules you load.

In reply to Re^5: Perl Threads and multi-core CPUs by perrin
in thread Perl Threads and multi-core CPUs by haidut

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