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Re: Why warning on configure --enable-openmp ?
From: |
Jussi Lehtola |
Subject: |
Re: Why warning on configure --enable-openmp ? |
Date: |
Tue, 10 May 2011 21:09:24 +0300 |
On Wed, 4 May 2011 09:41:03 -0400
"John W. Eaton" <address@hidden> wrote:
> The --enable-openmp configure option just checks for a compiler flag
> and libraries. I don't think anything else was ever done with it.
> Unless someone wants to take on the task of making this actually do
> something useful, then maybe it should just be removed?
Yes, this would at least explain why I couldn't find any OpenMP stuff
in the source code.
OpenMP parallellization is pretty simple to implement if you're
satisfied with a moderate speedup, but getting it to scale more than
90% is pretty hard even in simple cases.
Of course, parallellization only makes sense in those functions that
are actually CPU bound.
--
Jussi Lehtola
Fedora Project Contributor
address@hidden