Use of GSL and Scalapack?

option, parallelism,...

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jzwanzig
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Joined: Mon Aug 17, 2009 9:25 am

Use of GSL and Scalapack?

Post by jzwanzig » Thu Aug 12, 2010 2:13 am

Hi,
I'm unclear about the use of GSL and Scalapack. What parts of the code do these libraries affect? Should I expect faster execution and/or better results if I use them? thanks for the tips,

Joe
Josef W. Zwanziger
Professor, Department of Chemistry
Canada Research Chair in NMR Studies of Materials
Dalhousie University
Halifax, NS B3H 4J3 Canada
jzwanzig@gmail.com

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Alain_Jacques
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Location: Université catholique de Louvain - Belgium

Re: Use of GSL and Scalapack?

Post by Alain_Jacques » Thu Aug 12, 2010 1:47 pm

Hello Joe,

I think the logic behind including GSL is to give developers access to this nice library of scientific functions ... good idea but no practical use for the moment (I mean for the end user).
And for Scalapack ... it should allow distributed (MPI) linear algebra functions to deal with very large systems that will use more that all the available memory on a single computer box. It won't make lapack faster but it will relax the memory limitations of this (multithreaded) library.

Kind regards,

Alain

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