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Published April 2, 1991 | Submitted
Journal Article Open

QCD on the connection machine: beyond *LISP

Abstract

We report on the status of code development for a simulation of quantum chromodynamics (QCD) with dynamical Wilson fermions on the Connection Machine model CM-2. Our original code, written in Lisp, gave performance in the near-GFLOPS range. We have rewritten the most time-consuming parts of the code in the low-level programming systems CMIS, including the matrix multiply and the communication. Current versions of the code run at approximately 3.6 GFLOPS for the fermion matrix inversion, and we expect the next version to reach or exceed 5 GFLOPS.

Additional Information

© 1991 Elsevier. This work was performed under the auspices of the United States Department of Energy. We thank the Center for Applied Parallel Processing, Argonne National Laboratory, the Northeast Parallel Architectures Center, Boston University, Thinking Machines Corporation, and the Advanced Computing Laboratory of Los Alamos National Laboratory for providing access to Connection Machines and making this work possible. The assistance of Mike McKenna with the Paris to slicewise geometry conversion software, and of Steve Heller with the multiwire news software is greatly appreciated. Both Mike McKenna and Steve Heller are employees of Thinking Machines Corporation.

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September 22, 2023
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