[Linux-ia64] 2.4.9 vs 2.4.18 for HPC

[Linux-ia64] 2.4.9 vs 2.4.18 for HPC

[Egan Ford]

With respect to Itanium2 what advantages does 2.4.18 have over 2.4.9 in
an HPC environment?

My concern is that RH7.2 does not have a 2.4.18/19 kernel and probably
will not.  For support reasons, running 2.4.9-34 from RH may be
required.  I am curious about the possible performance and stability
issues with 2.4.9 on Itanium2.

I am trying to build a case for software development on 2.4.18/19
kernel.org kernels.

Thanks.

Re: [Linux-ia64] 2.4.9 vs 2.4.18 for HPC

[Alex Williamson]

To name a few...

 - HP zx1 chipset support
 - McKinley Perfmon support
 - McKinley optimized assembly for copy_user, memcpy, copy_page

	Alex

Egan Ford wrote:
> 
> With respect to Itanium2 what advantages does 2.4.18 have over 2.4.9 in
> an HPC environment?
> 
> My concern is that RH7.2 does not have a 2.4.18/19 kernel and probably
> will not.  For support reasons, running 2.4.9-34 from RH may be
> required.  I am curious about the possible performance and stability
> issues with 2.4.9 on Itanium2.
> 
> I am trying to build a case for software development on 2.4.18/19
> kernel.org kernels.
> 
> Thanks.
> 

--
Alex Williamson                                  Linux Development Lab
alex_williamson@hp.com                                 Hewlett Packard
970-898-9173                                          Fort Collins, CO

Re: [Linux-ia64] 2.4.9 vs 2.4.18 for HPC

[Steffen Persvold]

On Tue, 6 Aug 2002, Egan Ford wrote:

> With respect to Itanium2 what advantages does 2.4.18 have over 2.4.9 in
> an HPC environment?
> 
> My concern is that RH7.2 does not have a 2.4.18/19 kernel and probably
> will not.  For support reasons, running 2.4.9-34 from RH may be
> required.  I am curious about the possible performance and stability
> issues with 2.4.9 on Itanium2.
> 
> I am trying to build a case for software development on 2.4.18/19
> kernel.org kernels.
> 

I don't think RH 7.2 2.4.9 kernels will run on Itanium2. You'll need 
atleast 2.4.18 + the latest patchset from David.

Regards,
-- 
  Steffen Persvold   | Scalable Linux Systems |   Try out the world's best
 mailto:sp@scali.com |  http://www.scali.com  | performing MPI implementation:
Tel: (+47) 2262 8950 |   Olaf Helsets vei 6   |      - ScaMPI 1.13.8 -
Fax: (+47) 2262 8951 |   N0621 Oslo, NORWAY   | >320MBytes/s and <4uS latency

Re: [Linux-ia64] 2.4.9 vs 2.4.18 for HPC

[Mike Lang]

There is a big difference from .17 to .18 we and others have seen about 2.5
times memory bandwidth speed up(on a streams benchmark).
         --Mike
At 09:33 AM 8/6/2002 -0600, you wrote:
>With respect to Itanium2 what advantages does 2.4.18 have over 2.4.9 in
>an HPC environment?
>
>My concern is that RH7.2 does not have a 2.4.18/19 kernel and probably
>will not.  For support reasons, running 2.4.9-34 from RH may be
>required.  I am curious about the possible performance and stability
>issues with 2.4.9 on Itanium2.
>
>I am trying to build a case for software development on 2.4.18/19
>kernel.org kernels.
>
>Thanks.
>
>
>_______________________________________________
>Linux-IA64 mailing list
>Linux-IA64@linuxia64.org
>http://lists.linuxia64.org/lists/listinfo/linux-ia64

___________________________
Michael Lang    mlang@lanl.gov
Los Alamos    National Laboratory
ph:505-665-5756,     fax:665-5638
MS B256, Los Alamos, NM 87545