From: Phil Carmody on
MassiveProng <MassiveProng(a)thebarattheendoftheuniverse.org> writes:
> On 17 Feb 2007 15:15:20 +0200, Phil Carmody
> <thefatphil_demunged(a)yahoo.co.uk> Gave us:
>
> >I'm currently running a 500MB LLL reduction on my G5 with 512MB RAM.
> >I have 72 such reductions to perform. Care to tell me how I could run
> >all 72 without any of them interfering with the other? Or even 2.
>
>
> Run one on one CPU and one on the other.
>
> I used to with SETI at home all the time, and it most certainly DOES
> double the number of units a day that machine churned out.
>
> If you only have a single CPU machine, however, you will not be able
> to do this.
>
> I have been running dually machines (at the personal level) for over
> 6 years now. They are awesome!

You can't fit 2 500MB jobs into 512MB of RAM.

I am a big fan of the dual G5s too.
It's a number-cruncher's dream.

Phil
--
"Home taping is killing big business profits. We left this side blank
so you can help." -- Dead Kennedys, written upon the B-side of tapes of
/In God We Trust, Inc./.
From: MassiveProng on
On 17 Feb 2007 21:26:17 +0200, Phil Carmody
<thefatphil_demunged(a)yahoo.co.uk> Gave us:

>You can't fit 2 500MB jobs into 512MB of RAM.
>
>I am a big fan of the dual G5s too.
>It's a number-cruncher's dream.

I have 2 GB ECC RAM minimum in all my systems now.
From: The Ghost In The Machine on
In sci.physics, MassiveProng
<MassiveProng(a)thebarattheendoftheuniverse.org>
wrote
on Sat, 17 Feb 2007 09:59:49 -0800
<tiget2h5auga6jl46gn46oisadv8ckr322(a)4ax.com>:
> On Sat, 17 Feb 07 14:08:30 GMT, jmfbahciv(a)aol.com Gave us:
>
>>The CPU isn't doing that work. That's what the video card
>>does.
>
>
> WRONG. The cpu is what the video playback applets run, and THAT is
> 100% cpu intensive for EACH AND EVERY FRAME of video PASSED to the
> video card.

http://www.youtube.com/watch?v=sHzdsFiBbFc

is what I used for metrics. CPU utilization appears to be about 50%
according to my CPU monitor. (Athlon XP 1600++, 1.4 MHz. 512 MB.
BT5500 RV250-based video system. OS: Linux 2.6.20 Gentoo 2006.1.
DSL line incoming. No skipping noted on this particular video
during initial stream. Playback was possible without network IO.
Note that this was in "tinyscreen mode".

(This video is safe for work: "Spiders On Drugs".)

Another test case

http://www.youtube.com/watch?v=xhd2lnCTWQM

skipped horribly on initial load, but that looks to be
more of a bandwidth problem than a CPU one. CPU utilization was
slightly lower.

SFW. Its main themes are apparently music, a school
bus, and dancing. Replay was possible without skipping.
Full screen utilized almost 90% of CPU, so that might be
an issue.

FWIW.

--
#191, ewill3(a)earthlink.net
Linux. An OS which actually, unlike certain other offerings, works.

--
Posted via a free Usenet account from http://www.teranews.com

From: Phil Carmody on
MassiveProng <MassiveProng(a)thebarattheendoftheuniverse.org> writes:
> On 17 Feb 2007 21:26:17 +0200, Phil Carmody
> <thefatphil_demunged(a)yahoo.co.uk> Gave us:
>
> >You can't fit 2 500MB jobs into 512MB of RAM.
> >
> >I am a big fan of the dual G5s too.
> >It's a number-cruncher's dream.
>
> I have 2 GB ECC RAM minimum in all my systems now.

What do you use them for? I run several number-theoretic
distributed computing projects, several are very well suited
to the Mac. Drop me a mail (by demunging my From address) if
you're interested in crunching prime numbers at all.

Phil
--
"Home taping is killing big business profits. We left this side blank
so you can help." -- Dead Kennedys, written upon the B-side of tapes of
/In God We Trust, Inc./.
From: krw on
In article <87wt2gr3fq.fsf(a)nonospaz.fatphil.org>,
thefatphil_demunged(a)yahoo.co.uk says...
> MassiveProng <MassiveProng(a)thebarattheendoftheuniverse.org> writes:
> > On 17 Feb 2007 15:15:20 +0200, Phil Carmody
> > <thefatphil_demunged(a)yahoo.co.uk> Gave us:
> >
> > >I'm currently running a 500MB LLL reduction on my G5 with 512MB RAM.
> > >I have 72 such reductions to perform. Care to tell me how I could run
> > >all 72 without any of them interfering with the other? Or even 2.
> >
> >
> > Run one on one CPU and one on the other.
> >
> > I used to with SETI at home all the time, and it most certainly DOES
> > double the number of units a day that machine churned out.
> >
> > If you only have a single CPU machine, however, you will not be able
> > to do this.
> >
> > I have been running dually machines (at the personal level) for over
> > 6 years now. They are awesome!
>
> You can't fit 2 500MB jobs into 512MB of RAM.
>
> I am a big fan of the dual G5s too.

Me too. The G5 program paid my mortgage for five years. ;-)

> It's a number-cruncher's dream.

--
Keith