[Distrs] Salutations

[Yann Chemin]

Hi Nikos,

yes 12 cores, is most probably 6 cores x2 HyperThreads, = 12 "virtual
cores".

You are ready to get started with the code!
Cheers,
Yann


On 27 November 2013 06:17, Nikos Alexandris <nik at nikosalexandris.net> wrote:

> Yann Chemin wrote:
>
> > Hi Nikos,
> >
> > There are two sets of distributed suites, one using OpenMP (complete)
> and a
> > small one using OpenCL (incomplete but few simple modules are there).
>
> Thank you Yann.  I will try to have a look at his next week.  Earlier it is
> impossible.
>
> > In any case I suggest you take any of the directory inside prog/ or
> progcl/
> > that you are most familiar with (i.e. prog_NDVI is always an easy take)
> and
> > compile it in your computer (make clean; make). After that, use any input
> > required (for NDVI, Red and NIR) and run the module. The distribution of
> > processing is done within the dataset processed, i.e. all pixels are
> loaded
> > in RAM, then each receives pixels as available and process the image
> > required.
>
> Sounds easy :-p
>
> > for OpenMP (prog/ directory) distribution, I suggest you use a biggish
> > image (1Gb per input band) to see a significant change with 4/8
> > core/threads. It scales well, you can try bigger and more cores/threads.
>
> Will do so.
>
> > Cheers,
> > Yann
> >
> > PS: if your CPU is INTEL, go in the BIOS and enable HyperThreading, it
> will
> > double you number of cores, works very well for such type of processing
> > distribution.
>
> Working with a Xeon E5-2630 here. Funtoo sees 12 cores, so I guess it's
> allready at max.
>
> Nikos
>



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