Re: Mathematica 5.1.1 on Fedora Core 4?
- To: mathgroup at smc.vnet.net
- Subject: [mg59826] Re: Mathematica 5.1.1 on Fedora Core 4?
- From: Scott Hemphill <hemphill at hemphills.net>
- Date: Tue, 23 Aug 2005 04:51:21 -0400 (EDT)
- References: <da0boj$fln$1@smc.vnet.net>
- Reply-to: hemphill at alumni.caltech.edu
- Sender: owner-wri-mathgroup at wolfram.com
Joe Christy <joe at eshu.net> writes: > Has anyone here tried Mathematica 5.1.1 on Fedora Core 4? There are > various remarks in the FC4 Release notes about thread libraries that > make me wonder if it will work, so I thought that I'd ask before > committing to an upgrade. I know this is a late reply, but nobody else seems to have responded. I have Mathematica 5.1 on Fedora Core 4, and I imagine the issues are similar. I installed my own scripts in /usr/local/bin. For example, /usr/local/bin/mathematica contains: #!/bin/bash export LANG=C export LD_ASSUME_KERNEL=2.4.1 export OMP_NUM_THREADS=1 exec /usr/local/Wolfram/Mathematica/5.1/Executables/mathematica "$@" The "LD_ASSUME_KERNEL" makes threads work, but since I only have a hyperthreading processor (Pentium 4) and not an actual multiprocessor system, I turn threads off by setting OMP_NUM_THREADS to "1". (The gains due to hyperthreading are offset by the overhead required to set up the threads, with a tiny net loss in my Mathematica benchmarks.) Scott -- Scott Hemphill hemphill at alumni.caltech.edu "This isn't flying. This is falling, with style." -- Buzz Lightyear