On 09/14/2012 05:00 AM, Igor Kozin wrote: > if memory bandwidth is your concern then there are models which boost > it quite significantly. e.g. > http://ark.intel.com/products/64584/Intel-Xeon-Processor-E5-2660-20M-Cache-2_20-GHz-8_00-GTs-Intel-QPI > probably very few codes are going to benefit from AVX without extra > efforts but BW is a clear win. > i'm seeing a good speed up on some applications which can be > attributed to higher BW.
There are 6.4, 7.2, and 8 GT/s chips This is an interesting puzzle and the mid tier price point: DUAL INTEL XEON 6C E5-2640 (2.5GHz/7.2GT/s/15MB) CPU [+ $1,810.00] DUAL INTEL XEON 4C E5-2643 (3.3GHz/8GT/s/10MB) CPU [+ $1,798.00] DUAL INTEL XEON 8C E5-2650 (2GHz/8GT/s/20MB) CPU [+ $2,270.00] So for BW limited one would go with the second two, but you have a big choice between low cores/cache high MHz and high cores/cache low MHz. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder Office FAX: 303-415-9702 3380 Mitchell Lane or...@nwra.com Boulder, CO 80301 http://www.nwra.com _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
