On Fri, Jul 11, 2008 at 03:49:26PM -0400, Jean Krivine wrote: > I am trying to run a stochastic simulator (written in ocaml) on a huge > data set and I have the following error message:
I can confirm that OCaml works fine with huge datasets, on 64 bit platforms anyway. > sim(9595) malloc: *** mmap(size=1048576) failed (error code=12) > *** error: can't allocate region > *** set a breakpoint in malloc_error_break to debug > Fatal error: out of memory. > > My system: > > Mac Pro running OS X 10.5.4 > Processor: 2 x 2.8 GHz Quad-Core Intel Xeon > Memory: 10 GB 800 MHz DDR2 FB-DIMM > > Does someone know what happened? Do you have any idea of any parameter > I could tune in order to avoid that? Is the compiler 32 bits or 64 bits on this machine? Try doing: $ ocaml # Sys.word_size ;; It should print out either '32' or '64'. Also run your program under whatever the OS X equivalent of 'strace' is (ktrace?) to find out exactly why the mmap call fails. OCaml <= 3.10.2 on Linux suffers a nasty problem with its use of mmap and randomized address spaces (https://bugzilla.redhat.com/show_bug.cgi?id=445545#c9) but it doesn't seem like this is the same issue. Rich. -- Richard Jones Red Hat _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
