Hi Maho,
On Friday, 2009-11-20 12:32:09 +0900, Maho NAKATA wrote:
> My idea is just a not a special and very simple.
>
> If we do vector-vector, vector-matrix, matrix-matrix multiplication etc,
>
> *just call BLAS and LAPACK*
We don't do much of these operations, only in some context of
sprea
another note;
wrt BLAS optimization, Gotoh Kazushige-san always talks about
"data transfer speed". Current bottleneck to BLAS implementation is data
transfer rate.
That's why level1, 2 are not so accelerated. Level3-BLAS (dgemm etc) are very
fast because we can reuse many data.
Naively, theoreti
Just a bit more;
for multi-cores, we should use parallel version of BLAS, LAPACK (like ATLAS,
via pthread)
for clusters (many machines) we should use ScaLAPACK.
So we can do more with small effort :-)
I'm not sure which LP solver is the fastest. And currently lpsolve in OOo source
code tree does
From: Kohei Yoshida
Subject: Re: [sc-dev] Microsoft testing Excel for supercomputers
Date: Thu, 19 Nov 2009 00:07:57 -0500
> So, I know little about parallel computing or clustered computing, and I
> do know that this is your area of expertise. With that in mind, I'd
> like t
On Thu, 2009-11-19 at 16:19 +0100, Niklas Nebel wrote:
> On 11/19/09 16:00, Kohei Yoshida wrote:
> > On Thu, 2009-11-19 at 09:25 +0100, Erich Neuwirth wrote:
> >> Hello,
> >> Excel 2007 already does parallel computing.
> >> A spreadsheet program internally creates a dependency graph
> >> of the cel
On 11/19/09 16:00, Kohei Yoshida wrote:
On Thu, 2009-11-19 at 09:25 +0100, Erich Neuwirth wrote:
Hello,
Excel 2007 already does parallel computing.
A spreadsheet program internally creates a dependency graph
of the cells. A dependency graph also knows which parts
of a complex calculation are not
Hi Eric,
On Thu, 2009-11-19 at 09:25 +0100, Erich Neuwirth wrote:
> Hello,
> Excel 2007 already does parallel computing.
> A spreadsheet program internally creates a dependency graph
> of the cells. A dependency graph also knows which parts
> of a complex calculation are not dependent on each othe
Hello,
Excel 2007 already does parallel computing.
A spreadsheet program internally creates a dependency graph
of the cells. A dependency graph also knows which parts
of a complex calculation are not dependent on each other,
and therefore can be run in parallel.
Excel 2007 does this parallel comput
Hello Maho-san,
On Thu, 2009-11-19 at 12:34 +0900, Maho NAKATA wrote:
> http://news.cnet.com/8301-13860_3-10398590-56.html
>
> > At a key supercomputing conference on Monday, Microsoft released
> > a test version of its Excel spreadsheet redesigned to run on powerful
> > clusters of servers.
>
http://news.cnet.com/8301-13860_3-10398590-56.html
> At a key supercomputing conference on Monday, Microsoft released
> a test version of its Excel spreadsheet redesigned to run on powerful
> clusters of servers.
Very interesting news to me. I didn't attend SC09, though.
> By engineering Excel
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