high performance smp

[David Mentre]

Bill Szkotnicki <bs...@wright.aps.uoguelph.ca> writes:

> I was also wondering where Linux is in terms of 64 bit computing?

If you ask whether Linux support 64 bits platforms, it has supported
them for years.

If you ask about libraries and other development tools, it depends of
the kind of tool. For example, gcc lacks 30-60% perf. compared to
DEC/Compaq compiler on Alpha platforms. However Compaq provides
optimized libraries for Linux on Alpha. Ditto for Intel on PIII (nothing
related to 64 bits, but just to let you know).

d.
--
David....@inria.fr -- http://www.irisa.fr/prive/dmentre/
Opinions expressed here are only mine.
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[Jun Nakajima]

Linux does support 64-bit architectures, kernel, and applications now.
If you have an Intel platform now, I would recommend IA-64 Linux because
it supports IA-32 binaries as well. See http://www.ia64linux.org/, for
example. The hardware should be available for sale soon.

Bill Szkotnicki wrote:
>
> Hi,
>
> I am trying to plan for our next upgrade and I wonder if I could get
> some advice on what types of machines are out there for high performance
> computing ( i.e. large memory, FAST, multi-processor, reliable, proven
> for smp, and performing mostly scientific computing like simulations and
> statistical analyses ). We are currently using an Intel server platform
> ( SC 450NX ) that we obtained in mid-1999 ( 4 P3 xeons, 2GB memory ) and
> I have been extremely happy with its performance but I need something
> better now. Other people here have gone with Compact alpha's ( I think
> model ES40 ) which they plan to use for a Beowolf cluster.
>
> If anyone would care to comment on the "best" performing smp platform
> for scientific computing I would be grateful.

>
> I was also wondering where Linux is in terms of 64 bit computing?
>

> Thanks, Bill

>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-smp" in
> the body of a message to majo...@vger.kernel.org

--
Jun U Nakajima
Core OS Development
SCO/Murray Hill, NJ
Email: j...@sco.com, Phone: 908-790-2352 Fax: 908-790-2426

[David Mentre]

Jun Nakajima <j...@sco.com> writes:

[ about IA 64 ]

> The hardware should be available for sale soon.

And performance? Not sure it will be a good bet. Without counting that
gcc won't be optimized for IA64 (don't know about SGI's compiler
however), and compiler is crucial for IA64 architecture.

To keep on SMP topic, will announced IA64 machines be SMP? With which
kind of interconnect between nodes (crossbar, bus)? Will linux kernel
work in smp mode?

Best regards,

d.
--
David....@inria.fr -- http://www.irisa.fr/prive/dmentre/
Opinions expressed here are only mine.

[Jun Nakajima]

I think SGI's compiler is doing a better job in that respect.

Today 2.4.0 SMP kernels run on SMP IA-64 platforms (e.g. 4-way)
reliably. I'm using such systems for heavy-duty software developement.
We had a demo using an 8-way IA-64 machine last Summer.

I cannot disclose details of their machines, but such information should
be available on their web sites.

David Mentre wrote:
>
> Jun Nakajima <j...@sco.com> writes:
>
> [ about IA 64 ]
> > The hardware should be available for sale soon.
>
> And performance? Not sure it will be a good bet. Without counting that
> gcc won't be optimized for IA64 (don't know about SGI's compiler
> however), and compiler is crucial for IA64 architecture.
>
> To keep on SMP topic, will announced IA64 machines be SMP? With which
> kind of interconnect between nodes (crossbar, bus)? Will linux kernel
> work in smp mode?
>
> Best regards,
> d.
> --
> David....@inria.fr -- http://www.irisa.fr/prive/dmentre/
> Opinions expressed here are only mine.

--

Jun U Nakajima
Core OS Development
SCO/Murray Hill, NJ
Email: j...@sco.com, Phone: 908-790-2352 Fax: 908-790-2426

[Jun Nakajima]

Sorry, no. I must comply with the agreements with Intel.

Markus Pfeiffer wrote:
>
> HI!!

>
> > Today 2.4.0 SMP kernels run on SMP IA-64 platforms (e.g. 4-way)
> > reliably. I'm using such systems for heavy-duty software developement.
> > We had a demo using an 8-way IA-64 machine last Summer.
> >
> > I cannot disclose details of their machines, but such information should
> > be available on their web sites.
> >

> Can you give us a performance hint concerning th IA.64 Machines??
>
> Cheers Markus