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From: Matt Giwer on 9 Apr 2008 23:59
Max Power wrote:

> Where are PC / Mac / Linux benchmarks (programs) that compare
> performance to Cray and other supercomputers ... must exist somewhere.

> Vista has a benchmark system, but it makes no Cray comparison.

> BOINC clients, in Graphical mode could provide Cray comparasons, but don't.

I don't much see the point on bragging rights here unless you are running a
cluster. It is what it is. The hardware benchmarks are all over and for free.
After that it is just MS v linux. Your computer will be different of course but
not by more than a few percent. Unless you are doing something like BOINC that
is 24/7 you can probably get a greater performance increase by learning to type
faster. 24/7 programs benefit by using the time between keystrokes so it doesn't
matter how long between them.

I am not trying to talk you out of it. It is only now that you mention it II
can't remember seeing benchmark suites in years. There is no longer a point in
showing linux is faster the MS as that was done years ago. MS is getting slower
with every new release.

--
If Jews had wanted peace they would never have gone to Palestine.
-- The Iron Webmaster, 3961
http://www.giwersworld.org a1
From: Jean-David Beyer on 10 Apr 2008 07:43
Max Power wrote:
>
> Where are PC / Mac / Linux benchmarks (programs) that compare
> performance to Cray and other supercomputers ... must exist somewhere.
>
> Vista has a benchmark system, but it makes no Cray comparison.
>
> BOINC clients, in Graphical mode could provide Cray comparasons, but don't.

I tried to see if any Cray users were running BOINC, but found no evidence
of such. I notice there is a comp.unix.cray newsgroup, so I infer that one
can run UNIX on one. Therefore one could get a BOINC client to run on the
Cray I suppose by compiling it from source. OTOH, I do not know if the
actual BOINC applications are available for it. While I did not do an
exhaustive search for Cray users at the BOINC web site, I scanned the users
and found no Cray in the list of OSs being used.

--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 07:40:01 up 23 days, 12:42, 5 users, load average: 4.51, 4.31, 4.18
From: James Wilson on 12 Apr 2008 03:39
Max Power wrote:
>
> Where are PC / Mac / Linux benchmarks (programs) that compare
> performance to Cray and other supercomputers ... must exist somewhere.
>
> Vista has a benchmark system, but it makes no Cray comparison.
>
> BOINC clients, in Graphical mode could provide Cray comparasons, but don't.

Just for reference, cray-cyber (www.cray-cyber.org) measured the
performance of thier Cray EL and found "460 MFlops (A 2.4 GHz P4/RDRAM
is 770 MFlops on the same benchmark problem, huge matric multiply, with
Linux gnu cc -O3)". Now, the EL is an old, bottom of the range, machine
(mid 90's) and is clocked at 33MHz (yes, thirty three megahertz). The
key thing with the Cray is that it's a vector processor - it has 8
vector registers, each of which is 64 words where a word is 64 bits. No
x86 vector extensions (MMX etc), or even the Cell, come close to that.
So long as the problem you are trying to solve maps well to that
hardware then it will fly. For general purpose desktop apps the PC will
easily out perform the Cray.

James
http://www.machineroom.info
From: Eugene Miya on 16 Apr 2008 13:08
In article <fY6dnbInnOPf-p3VnZ2dnUVZ8s-qnZ2d(a)pipex.net>,
James Wilson <news(a)machineroom.info> wrote:
>Just for reference, cray-cyber (www.cray-cyber.org) measured the
More of historic interest.
>performance of their Cray EL and found "460 MFlops (A 2.4 GHz P4/RDRAM
>is 770 MFlops on the same benchmark problem, huge matric multiply, with
>Linux gnu cc -O3)". Now, the EL is an old, bottom of the range, machine
True.
>(mid 90's) and is clocked at 33MHz (yes, thirty three megahertz). The
>key thing with the Cray is that it's a vector processor - it has 8
Historic. Current models are a bit more complex.
>vector registers, each of which is 64 words where a word is 64 bits. No
>x86 vector extensions (MMX etc), or even the Cell, come close to that.
>So long as the problem you are trying to solve maps well to that
>hardware then it will fly. For general purpose desktop apps the PC will
>easily out perform the Cray.
Old Crays.

PCs will also tend to out perform the ENIAC as well.

--
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