Re: open64 versus gcc

Diego Novillo <dnovillo@redhat.com>
3 Dec 2006 21:30:41 -0500

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Related articles
[4 earlier articles]
Re: open64 versus gcc Sid-pasdespam.Touati@inria.fr (Sid Touati) (2006-11-27)
Re: open64 versus gcc drizzle76@gmail.com (dz) (2006-11-29)
Re: open64 versus gcc dnovillo@redhat.com (Diego Novillo) (2006-11-29)
Re: open64 versus gcc alewando@fala2005.com (A.L.) (2006-12-01)
Re: open64 versus gcc alewando@fala2005.com (A.L.) (2006-12-01)
Re: open64 versus gcc jthorn@aei.mpg-zebra.de (Jonathan Thornburg -- remove -animal to reply) (2006-12-03)
Re: open64 versus gcc dnovillo@redhat.com (Diego Novillo) (2006-12-03)
Re: open64 versus gcc lindahl@pbm.com (Greg Lindahl) (2006-12-03)
Re: open64 versus gcc bmoses-nospam@cits1.stanford.edu (Brooks Moses) (2006-12-03)
Re: open64 versus gcc mwso@earthlink.net (Gary Oblock) (2006-12-03)
Re: open64 versus gcc Sid-Touati@inria.fr (ST) (2006-12-06)
| List of all articles for this month |

From: Diego Novillo <dnovillo@redhat.com>
Newsgroups: comp.compilers
Date: 3 Dec 2006 21:30:41 -0500
Organization: Red Hat Canada
References: 06-11-09406-11-100 06-11-104 06-11-113 06-11-120 06-11-124 06-12-015 06-12-016
Keywords: arithmetic, performance, GCC
Cc: compilers@iecc.com

A.L. wrote on 12/01/06 11:52:


> Disclaimer: My expiments with gcc and numerical computations ended in
> 2003. Maybe since this time something changedIf there is somebody
> here who is using the up-to-date version of gcc for large scale,
> intensive floating point number crunching, please share the
> experience.
>
GCC has gone through a major overhaul starting with version 4.0. It now
support Fortran 95, vectorization, OpenMP and several high-level loop
optimizations. It still needs work in scheduling and register
allocation, but there is work underway in those areas as well.


That being said, we have not yet covered the gap completely in terms of
floating point performance.



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