On Thu, Apr 1, 2010 at 1:34 PM, Jerker Nyberg wrote:
> On Thu, 1 Apr 2010, Peter Kjellstrom wrote:
>
> My experience is that in HPC it always boils down to price/performance and
>> that would in my eyes make apples out of Magnycour and Westmere.
>>
>
> I just ordered two desktop systems with Int
d the load balancing the code would inevitably mis-schedule and
the code would end up running with only 5 cores(or from start) and
calculations would take around 10x longer.
This was only useful in 6 cores per node, as then each processor would
be running precisely 3 threads. With eight I haven&#x
Hi,
I've run some tests with an i7 920 and OCZ DDR-1600 CAS7 and the
results were very good for bandwidth friendly benchmarks and I
definitely recommend you to stay away from the usual stock memory of
ddr3-1...@cas9.
About performance with CFD I have no idea. VASP liked particularly of
the extra b
slightly) higher degree of thoroughness, hence the 60-80-95-130
grades and not just 65-95-130 grades as in desktops.
Best regards,
Tiago Marques
>
> Thanks,
> Tom Rockwell
> ___
> Beowulf mailing list, Beowulf@beowulf.org sponsored by
network. They only basically go load the
executable file and shared libraries at the start of a job and that's
it.
I can provide the scrips I have set up to do this if you want to take
a look at them.
Best regards,
Tiago Marques
On Thu, Sep 24, 2009 at 10:54 PM, Rahul Nabar wrote:
> On Thu
frequently
shutdown. It remains to be seen what they will do with Firestream
cards, as for that I known not if it happens. It will if they quote
similar TDPs.
Best regards,
Tiago Marques
> ___
> Beowulf mailing list, Beowulf
han others to the cluster,
hence should be entitled to a fair usage scenario. This is
likely to remain for a good amount of time and automation
of the quotas would be ideal.
Is there any kind of solution that provides this sort of
behaviour, even if only
On Sun, May 17, 2009 at 12:04 PM, Jan Heichler wrote:
> Hallo Tiago,
>
>
> Sonntag, 17. Mai 2009, meintest Du:
>
>
>
> On Sat, May 16, 2009 at 11:56 PM, Rahul Nabar wrote:
>
>
> On Sat, May 16, 2009 at 2:34 PM, Tiago Marques wrote:
>
> > One of the
On Sat, May 16, 2009 at 11:56 PM, Rahul Nabar wrote:
> On Sat, May 16, 2009 at 2:34 PM, Tiago Marques wrote:
> > One of the codes, VASP, is very bandwidth limited and loves to run in a
> > number of cores multiple of 3. The 5400s are also very bandwith - memory
> and
>
;.
Still, if you can upgrade to Shangai cpus, it may be a better deal than
switching all to Nehalem.
Best regards,
Tiago Marques
On Tue, May 12, 2009 at 8:19 PM, Rahul Nabar wrote:
> I'm currently shopping around for a cluster-expansion and was shopping
> for options. Anybod
ng it that way with no legal problems - I even talked to
it's representative yesterday.
Best regards,
Tiago Marques
CICECO
University of Aveiro
On Wed, Apr 22, 2009 at 5:01 AM, Gerry Creager wrote:
> Having read what the license itself says, I tend to agree with the position
> asserte
Thanks. No mention of VirtualBox there, it would be a shame if they start
charging for it now :-(
Best regards
On Mon, Apr 20, 2009 at 10:15 PM, Chris Samuel wrote:
>
> - "Tiago Marques" wrote:
>
> > Except when it comes to RDBMS.
>
> Allegedly..
>
> #
On Mon, Apr 20, 2009 at 2:57 PM, Robert G. Brown wrote:
> On Mon, 20 Apr 2009, Tiago Marques wrote:
>
> and Sun have been natural competitors for years; Oracle and Sun have
>> been natural partners.
>>
>> Except when it comes to RDBMS.
>>
>
> Aw, I'm
On Mon, Apr 20, 2009 at 1:42 PM, Robert G. Brown wrote:
> On Mon, 20 Apr 2009, Chris Dagdigian wrote:
>
>
>> It's official:
>> http://www.sun.com/third-party/global/oracle/index.jsp
>>
>> -Chris
>>
>
> Guess that means Oracle is no longer looking at Red Hat...;-)
>
> Maybe IBM will turn around an
On Sun, Apr 5, 2009 at 11:28 PM, Mark Hahn wrote:
>
> I'll get an answer: is there any remarkable difference
in FPU performance between Extreme and non-Extreme
Intel CPUs, e.g. QX9650 and Q9650?
>>>
>>> of course not - the chips are the same inside, so deliver
>>> exactly the perf
On Sun, Apr 5, 2009 at 9:48 PM, Mark Hahn wrote:
> Definitely, it's a non-cluster question, but may be
>> I'll get an answer: is there any remarkable difference
>> in FPU performance between Extreme and non-Extreme
>> Intel CPUs, e.g. QX9650 and Q9650?
>>
>
> of course not - the chips are the sam
ntake not of 20-25ºC but of 35-40ºC. No
PSU can handle this kind of temperature silently. It's manageable in winter
but a problem in summer, when PSUs should not intake air at more than 50ºC
or it will exhibit sub-optimal power delivery.
Also, the separate air-channel usually serves HDDs and PSU
n't have a sense for whether Goto's
> kind of tuning (beyond the ability of compilers, and relatively
> cache-friendly relative to flops) is terribly relevant to the market.
It's even worse for AMD in some other areas. Take a look at this:
http://it.anandtech.com/weblog/
a Core i7 but should give you an idea.
Best regards,
Tiago Marques
On Fri, Feb 20, 2009 at 3:30 PM, Ivan Oleynik wrote:
> Does someone know whether Intel has already started shipping Nehalem Xeon
> 55** processors? Are there system integrators that have Nehalem
On Tue, Feb 17, 2009 at 8:14 PM, Mike Davis wrote:
>
> On Mon, 16 Feb 2009, Tiago Marques wrote:
>>
>> I must ask, doesn't anybody on this list run like 16 cores on two nodes
>>> well, for a code and job that completes like in a week?
>>>
>> For
On Sat, Feb 14, 2009 at 6:43 PM, David Mathog wrote:
> Tiago Marques
>
>
> > I've been trying to get the best performance on a small cluster we
> have here
> > at University of Aveiro, Portugal, but I've not been enable to get most
> > software to sca
On Sat, Feb 14, 2009 at 1:49 PM, John Hearns wrote:
> 2009/2/13 Tiago Marques :
> >
> > As for software, I'm using Gentoo Linux, ICC/IFC/GotoBLAS, tried
> scalapack
> > with no benefit, OpenMPI and Torque, running in x86-64 mode.
> >
>
> Pallas/PMB,
; measure latency, but the experts on this list will probably tell you more
> about the subjest that you'd ever wished to know ;-)
>
> Ok, thanks! Much appreciated.
Best regards,
Tiago Marques
> Nicholas
>
> --
>
>
> Dr
6 cores, which
seems to be a bandwidth problem due to the FSB used in Xeons, but the other
software behaves quite well.
As for software, I'm using Gentoo Linux, ICC/IFC/GotoBLAS, tried scalapack
with no benefit, OpenMPI and Torque, running in x86-64 mode.
Any help wi
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