Date: Thu, 13 Jan 2005 12:07:52 +0100 From: Andrea Venturoli <ml@netfence.it> To: freebsd-questions@freebsd.org Subject: Re: Hyperthreading hurts 5.3? Message-ID: <41E65688.4010700@netfence.it> In-Reply-To: <786252184.20050113014354@wanadoo.fr> References: <200501121049.j0CAnJQe028309@mp.cs.niu.edu> <828997113.20050112184556@wanadoo.fr> <41E58E53.7060606@netfence.it> <786252184.20050113014354@wanadoo.fr>
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Anthony Atkielski wrote: > Where these computations in which all threads were doing pretty much the > same thing? Not exactly the same algorithm and on different set of data. > And was it floating-point? Yes. > (Doesn't the processor have just one FPU, or something like that?) I don't really know (I made this test almost for fun and curiosity), but I really supposed this must be true. Anyway I saw both CPU at 100%. > An AMD processor will also melt or catch fire if the CPU fan fails, > whereas an Intel processor won't. In the past. Nowadays they have some sort of protection. BTW I've already seen a couple of (old) Athlons with a failing fan; they run overheated probably for months with occasional system lockups, but they are now working good with a new fan. I'll stop here, we are going OT (and flaming :)... bye av.
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