[Beowulf] Re: Intel quad core nodes?

[Justin Penney]

> I assume these are all one-system results?
> MPI or OpenMP?
> Looks like the Xeon Quad and Barcelona results must have been run with 2
> processes per socket?
> Was it one executable?  Compiled/optimized on what platform?
>
> Very interesting data, you may just want to provide the list with some
> additional details, so they know what to make of the data.
>
> -Tom

These are single system results with MVAPICH. They will run on InfiniBand which is why MVAPICH was used.

The quad core runs were 2 processes per socket.

The executables were created with the latest Portland Group f90 and the optimisation flags were used for each chip. The Barcelona binary used "-tp barcelona-64" and the Xeon binary used "-tp core2-64."

As soon as I am able I will be running this test on Harpertown processors. I should then have permission to publish the details of the testing. 

>> I recently ran a customer's weather modeling code on a
>> variety of machines. This program is very sensitive to
>> memory. The following are the run times while running 4
>> processes. Please note that the Xeon, Opteron and Barcelona
>> numbers are from dual socket machines.
>>
>>   Core 2 Quad 2.4 GHz - 3h16m
>>   Xeon Quad 2.0 GHz - 2h51m
>>   Barcelona 2.0 GHz - 1h40m
>>   Opteron 2220SE 2.8 GHz - 2h24m
>>
>> At 8 processes:
>>
>>   Xeon Quad 2.0 GHz - 2h52m
>>   Barcelona 2.0 GHz - 1h22m 

-- 
justin penney
email: jpenney at advancedclustering.com
phone: 913.643.0300 option 2
im: http://livehelp.advancedclustering.com/


-- 
justin penney
email: jpenney at advancedclustering.com
phone: 913.643.0300 option 2
im: http://livehelp.advancedclustering.com/