Re: [Haskell-cafe] help optimizing memory usage for a program

Manlio Perillo ha scritto:

[...] I have executed the program, using the same RTS flags as yours:

real 6m13.523s user 0m53.931s sys 0m7.812s

815 MB usage

This is an huge improvement!

Now I have to check if using insert will further improve memory usage.

And ... surprise! real 6m12.036s user 0m51.303s sys 0m8.433s 813 MB usage As I suspected (you just have to read the IntMap code), there is *no reason* why empty + insert should be better then singleton + union. So the culprit is elsewhere. It may be the use of uvector, or probably it is because you force strict evaluation more often then me.

[...]

Regards Manlio