Efficient UNICOS Run-Time System for Functional Programs on a CRAY X-MP.

摘要

The ParaGraph (Parallel Graph reduction) project at Los Alamos National Laboratory is an investigation of the use of functional languages for scientific applications; efficient implementation strategies are a primary concern. The initial version of the ParaGraph run-time system, ParaGraph-RTS 1.0, was not targeted for the X-MP architecture specifically. We examine the new Cray X-MP UNICOS single processor implementation, ParaGraph-RTS 2.0, and describe the CRAY specific optimizations employed. Optimizations include novel use of the CRAY X-MP register set and the generation of optimized assembly code. Performance improvements over ParaGraph-RTS 1.0 have been significant; initial measurements are presented. 8 refs., 4 figs.