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floating point speed compare of AMD and Intel chips
On Mon, 15 Oct 2007 10:19:30 -0700, Bob Fry
wrote: From: ] On Behalf Of Justin Penney Sent: Thursday, October 11, 2007 8:17 AM To: Subject: [Beowulf] Intel quad core nodes? 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 Sweet! Just a couple of questions - how were these chips rigged up? How much RAM on board? What OS were you running? Details, man! Details! |
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floating point speed compare of AMD and Intel chips
"w" == wolfie2k7 writes:
w Sweet! Just a couple of questions - how were these chips rigged w up? How much RAM on board? What OS were you running? Details, w man! Details! I'll ask on the email list, and post again here. Might be a few days.... -- The injury we do and the one we suffer are not weighed in the same scale. ~ Aesop |
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floating point speed compare of AMD and Intel chips
"w" == wolfie2k7 writes:
w On Mon, 15 Oct 2007 10:19:30 -0700, Bob Fry w w wrote: From: ] On Behalf Of Justin Penney Sent: Thursday, October 11, 2007 8:17 AM To: Subject: [Beowulf] Intel quad core nodes? 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 w Sweet! Just a couple of questions - how were these chips rigged w up? How much RAM on board? What OS were you running? Details, w man! Details! Looks like we'll have to wait a bit: From: ] On Behalf Of Justin Penney Sent: Monday, October 15, 2007 11:57 AM To: Subject: [Beowulf] Intel quad core nodes? 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 [note: http://en.wikipedia.org/wiki/Xeon#54...ries_Wolfdale] processors. I should then have permission to publish the details of the testing. -- justin penney email: phone: 913.643.0300 option 2 im: http://livehelp.advancedclustering.com/ _______________________________________________ Beowulf mailing list, -- The reasonable man adjusts himself to the world, the unreasonable one persists in trying to adapt the world to himself; therefore all progress depends on the unreasonable man. ~ George Bernard Shaw |
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