Re: Mathematica's CPU utilization
- To: mathgroup at smc.vnet.net
- Subject: [mg59278] Re: Mathematica's CPU utilization
- From: Antti Penttilä <Antti.I.Penttila at helsinki.fi.removethis>
- Date: Thu, 4 Aug 2005 02:08:00 -0400 (EDT)
- Organization: University of Helsinki
- References: <dchnnm$7tv$1@smc.vnet.net> <dcmv29$gpt$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
The Phantom wrote: > On Sun, 31 Jul 2005 05:31:34 +0000 (UTC), "Chris" <topher at csh.rit.edu> wrote: > > >>You probably have two or more processors or a dual core processor or a >>processor with hyperthreading wink, wink, nudge, nudge. > > > It is a Pentium 4 with Hyperthreading technology (tm). Is that the same thing as a dual > core processor? I guess that would explain it. > Hypertheading is not dual core, it just pretends to be dual core. That's why in Task Manager there is also two processors and graphs for them both. Mathkernel uses 100 % of the other (virtual) processor which is 50 % of the total capacity. Actually, since there is no real other core, Mathkernel uses all the CPU-time there is available. The CPU-usage numbers are a bit misleading with Hyperthreading processors. -- Antti Penttilä Antti.I.Penttila at helsinki.fi.removethis