sponge45 changed the topic of #ocaml to: Discussions about the OCaml programming language | http://caml.inria.fr/
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<whatsup103> its quiet ................tooo quiet
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<mwc> Wow, ocamlmpi is fantastic
<mwc> With just 20 lines I went from maing out a 1.7Ghz p4 to saturating 15 2.2 Ghz Opterons :)
<mwc> s/maing/maxing
<tsuyoshi> what is ocamlmpi
<tsuyoshi> message passing?
<mwc> Yep, MPI bindings for Ocaml. It's really amazingly productie to be able to send and receive arbitrary values through the communication channels instead of having to bash everything into a (void*)
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<tsuyoshi> a void*?
<mwc> Yeah, with the C api you have to communicate between the parallel nodes using raw buffers. REally a pain compared to sending and receiving 'a
<tsuyoshi> oh well.. 'a and void * are really the same thing I think
<tsuyoshi> the difference is ocaml has a marshalling library
<mwc> Yes, I'm sure that's what the lib is using to communicate over the raw MPI channel
<mwc> still, it works wonders, in 20 lines I parallelized a genetic algorithm, and it still shows no signs of hitting a parallelization wall on 15 CPUs
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<tsuyoshi> 15 cpus on the same machine? or over a network?
<mwc> MPI, so 15 cores on a 362 core cluster... I think each node is 2x dual core opteron
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<ludwig-> does anyone here recommend the "Ocaml for scientists" book? I've been thinking about buying it.
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<mnemonic> hi
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<mnemonic> hi
<jiffyjeff> hi
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<love-pingoo> ih
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<hcarty> I'm being told that the Str library isn't being linked in when I compile, though I am (trying to)
<hcarty> ocamlfind ocamlc -package str foo.ml -o foo
<hcarty> Gives me:
<hcarty> Error while linking foo.cmo: Reference to undefined global `Str'
<hcarty> I don't have trouble linking other libraries, and Str.* works in the toplevel
<hcarty> Has anyone here had this problem before? Any suggestions?
<stevan_> hcarty: I am finding the same issue, which is quite odd
<stevan_> however, this works ... ocamlc str.cma foo.ml -o foo
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