Re: multi-threading on Mac OS X.
- To: mathgroup at smc.vnet.net
- Subject: [mg73783] Re: multi-threading on Mac OS X.
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Wed, 28 Feb 2007 04:35:36 -0500 (EST)
- Organization: Uni Leipzig
- References: <eropih$9b6$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
I don't think that it is working because
the mysique OMP_NUM_THREADS variable mean
that you wish to use OpenMP and AFAIK
this is only supported by Intel Compilers for
MacOS X and GCC 4.2 ...
The Intel compiler work only on Intel Macs
and GCC 4.2 is not finished.
Regards
Jens
Matthew Horrobin wrote:
> Hi,
>
> I'm trying to get full performance out of my Dual CPU PowerMac G5.
>
> Using tests that I've found in the mathgroup e.g.:
>
> Eigenvalues[Table[Random[], {1500}, {1500}]];
>
> I never seem to get much more than 100% CPU load (fully loaded would be
> 200%), even when setting OMP_NUM_THREADS=2, as is recomended for other
> OS's.
>
> Does anyone know how to get mutli-threading full working on OS X?
>
> Cheers,
>
> Matt
>
>