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Message-ID: <016001cc9e4c$04b81de0$0e2859a0$@net>
Date: Tue, 8 Nov 2011 13:24:21 -0600
From: "jfoug" <jfoug@....net>
To: <john-dev@...ts.openwall.com>
Subject: RE: floating-point math after MMX
Would a P3 'ever' be used in an MPI build?
>From: magnum [mailto:john.magnum@...hmail.com]
>
>2011-11-08 20:04, Solar Designer wrote:
>> I expect that
>> 0022-j7-Fix-for-huge-figures-in-MPI-sum-avg-cps-64-bit-ov.patch and
>> 0027-j7-Optionally-output-number-of-candidates-tried.patch would cause
>> misreporting when running MMX-using builds (and formats for which MMX
>> specifically is actually used) on certain CPUs. I previously observed
>> this on Pentium 3, for which there's now a workaround in -jumbo's
>> status.c: status_get_ETA() and status_get_totalETA(), but not in other
>> functions. Basically, we only issue the EMMS instruction right before
>> doing floating-point math.
>>
>> Is this something you can test for (on a P3) and patch now or should
>I?
>
>I have no idea where to find a P3... I guess you get to do it.
>
>magnum
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