To my request

...

I cannot find where it is explained the memory distribution used by ghci. [..]

Simon Marlow writes

Interpreted code lives in the heap, and is garbage collected as normal.

Object code is loaded outside the heap. It takes up real memory in the process, because the data has to be relocated when it is loaded. [..]

Let, for example, all the .o modules were prepared, and we command ghci ... +RTS -Mxxm -RTS ... Loading package std ... linking ... done. Prelude> :l BPrelude ... and then try to find sum [1..n]. In my experiment xx = 7 does not allow to load the program, 8, sum [1..66000] yields "Heap exhausted", 10, sum [1..77000] yields 2964538500. Probably, this xx Mb is for binary program + heap. ghci loads .o modules, they take some part of xx, and all the rest is for the heap. Right? Thank you in advance for the explanation. ----------------- Serge Mechveliani mechvel@botik.ru