Re: Eigensystem: different solution in V5.0 and V4.1 ??
- To: mathgroup at smc.vnet.net
- Subject: [mg48346] Re: Eigensystem: different solution in V5.0 and V4.1 ??
- From: "Peltio" <peltio at twilight.zone>
- Date: Tue, 25 May 2004 07:17:10 -0400 (EDT)
- References: <firstname.lastname@example.org>
- Reply-to: "Peltio" <peltioNOSP at Mdespammed.com.invalid>
- Sender: owner-wri-mathgroup at wolfram.com
"Bill Rowe" wrote >The only way I can see the specific cpu used making a difference >is when you are using machine precision numbers and there is a >difference between processors with respect to machine precision >numbers. I thought that 32 bits Intel and AMD architectures shared the same internal representation for binary floating point numbers. I knew of the different way basic operations were handled (with AMD having better performances in the FPU arena), but I did not expect to get different results for the same computation. If this is the case, what makes such a difference? The fact that this discrepancy comes up only with Mathematica 5 could have anything to do with its optimization for 64 bits architectures? cheers, Peltio totally unaware of _this_ particular platform dependance. -- Invalid address in reply-to. Crafty demunging required to mail me.