[Beowulf] [gorelsky@stanford.edu: CCL:dual-core Opteron 275performance]

[Alan Louis Scheinine]

With regard to performance of dual-core Opteron, your milage may vary.
I just finished a benchmark using a program that needs a high
bandwidth to memory.  A quad-CPU board with single-core Opteron was
nearly twice as fast as a dual-CPU board with dual-core Opteron,
in each case four MPI processes; compiled with MPICH with PGI;
in every case 2.2 GHz CPU frequency.  The program is meteorology,
short-term weather prediction.

-- Alan

  Centro di Ricerca, Sviluppo e Studi Superiori in Sardegna
  Center for Advanced Studies, Research, and Development in Sardinia

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