Talk presented by Norbert Eicker

Parallel Session: Algorithms and Machines II

Tuesday June 29th, 16.40 - 17.00, Room 8

QCD on $\alpha$-Clusters

Abstract: It is demonstrated that the 21264 $\alpha$-processor can reach about 20\% sustained efficiency for the inversion of the Wilson-Dirac operator. It appears that fast ethernet is not sufficient to achieve a computation dominated situation on adequate lattice and system sizes. We show that using a Myrinet interconnection one can achieve a balance between computation and communication. The price/performance ratio lies in the range of specialized lattice QCD compute engines.

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