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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: chipguy who wrote (243279)	11/6/2007 10:58:17 AM
From: graphicsguru	Respond to of 275872

It probably represents a blended average . . . Too bad. That seems to makes the data pretty useless. It would be interesting to know what percentage of the HPC market buys larger than 2S x86. There are a number of large 4S clusters, and Sun has been selling a few large 8S opterons. I don't have a good idea how large a fraction of the market that represents. It would also be interesting to know whether the people using the 4S and 8S clusters are programming in MPI and taking advantage of a particularly fast MPI implementation on SMP machines, or if they're using an SMP programming methodology. Perhaps MPI implementations on SMP machines have gotten so good that there's not much to be gained by using a heterogeneous programming style. Anyone know if there are good NUMA-aware MPI implementations (for Opterons now and Nehalem in the future)? That might be a good reason to stick with uniform MPI.