Re: octave in multiprocessor cpu

[Carlo Sartori]

thank to all.. I understood: I have to change my code :P.  Now, I
haven't any time to optimize my .m file to use my new CPU . Next time
I will program something I will pay attention to this problem from the
beginning, for sure. :)
thank again for your help
Carlo

2010/1/8 Jaroslav Hajek <address@hidden>:
> On Fri, Jan 8, 2010 at 2:57 PM, Carlo Sartori <address@hidden> wrote:
>> Hi tom.
>> Thank for your fast answer!
>>
>> I looking for a way to lot the CPU usage in all my core, now when I
>> start a octave program i seen in htop only one cpu running at 100% and
>> the other 7 are at 0%. Normally I don't use big matrices but long
>> cycle "for". I take a look about the libraries you have write in your
>> answer, but if it is only for matrices operation it isn't what I need.
>> I try to use google but i don't fount a simple way for make what I want.
>> Sorry for my bad English.
>> Carlo
>>
>
> If you're on a Unix-based system, parcellfun and pararrayfun from
> OctaveForge are probably the easiest way to exploit embarassing
> parallelism (see http://en.wikipedia.org/wiki/Embarrassingly_parallel)
> on multi-core machine.
>
> The best suggestion is vectorize the for loops using cellfun/arrayfun
> and then drop in parcellfun/pararrayfun to get parallel computing. You
> can search the forum for code examples, or provide some code to get
> help with parallelizing it.
>
> --
> RNDr. Jaroslav Hajek, PhD
> computing expert & GNU Octave developer
> Aeronautical Research and Test Institute (VZLU)
> Prague, Czech Republic
> url: www.highegg.matfyz.cz
>