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Re: gomp slowness

skaller wrote:
On Thu, 2007-10-18 at 12:02 +0800, Biplab Kumar Modak wrote:
skaller wrote:
On Wed, 2007-10-17 at 18:14 +0100, Biagio Lucini wrote:
skaller wrote:
It would be interesting to try with another compiler. Do you have access to another OpenMP-enabled compiler?
Unfortunately no, unless MSVC++ in VS2005 has openMP.
I have an Intel licence but they're too tied up with commerical
vendors and it doesn't work on Ubuntu (it's built for Fedora and Suse).

If possible, you can post the source code. I've a MSVC 2005 license (I bought it to get OpenMP working with it).

I can then give it a try. I have a dual core PC. :)

OK, attached.

I don't know of any OpenMP compiler which would correct the nesting of parallel loops in your LU. I have assumed that OpenMP doesn't allow such optimization; you have to get it right yourself.

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