----- Original Message -----
Sent: Thursday, June 03, 2004 5:54
AM
Subject: Re: [Prime] It's official
Estimado Guillermo:
Disculpa que recurra a ti, pero espero que el
idioma espa�ol nos permita entendernos....
Hace ya tiempo que he intentado "borrarme" de
esta lista (mersenne.prime) pues, en micaracter de docente, la mayoria de los
mensajes que se intercambian escapan a mis intereses, m�s all� de alguna
simple curiosodad.
He mandado varios mensajes, pidiendo la
desuscripci�n, tal cual se pide al pie de cada mensaje y (esto desde hace mas
o menos un a�o) no lo he logrado.
�conoces alguna forma efectiva de
hacerlo?
Desde ya muchas gracias
un saludo
gustavo bermudez
Gustavo E. Berm�dez Canzani
Ibiray 2230 (bis) 11300
Montevideo URUGUAY
----- Original Message -----
Sent: Thursday, June 03, 2004 2:06
AM
Subject: Re: [Prime] It's
official
On Thursday 03 June 2004
00:07, George Woltman wrote:
> At 07:58 PM 6/2/2004 +0100, Tom Womack
wrote:
> >I'm impressed by the speed of verification; it sounds as
if the FFT itself
> >ran in parallel on the Itaniums, which I
thought people on this list had
> >repeatedly claimed was
impractical. Is it in fact practical but pointless
> > -- you could
check a single number in eight days on a dual Opteron, but
> > just
running Prime95 on both CPUs would check two numbers in
fourteen.
>
> You are correct. Glucas and now mlucas are
now multithreaded. You'll
> get better throughput running
single-threaded, but verifications really
> fly
multi-threaded.
>
> Due to inefficiencies in the glucas
implementation, since fixed, the
> verification only used about half
of the 16 Itanium CPUs.
>
This has been fixed. Now Glucas use
most of the power, scale better and can
use any number of threads. All
these improvements are side-effect of M41
verification. See latest
snapshots (code still experimental),
ftp://ftp.oxixares.com/pub/glucas/snapshots
Guillermo
--
Guillermo Ballester Valor
[EMAIL PROTECTED]
Ogijares,
Granada SPAIN
Linux user #117181. See http://counter.li.org/
Public GPG KEY
http://www.oxixares.com/~gbv/pubgpg.html
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