Shared Memory NUMA Programming on I-WAY

The performance of the Global Array shared-memory nonuniform memory-access programming model is explored on the I-WAY, wide-area-network distributed supercomputer environment. The Global Array model is extended by introducing a concept of mirrored arrays. Latencies and bandwidths for remote memory access are studied, and the performance of a large application from computational chemistry is evaluated using both fully distributed and also mirrored arrays. Excellent performance can be obtained with mirroring if even modest (0.5 MB/s) network bandwidth is available.

• Type: Conference
• Year: 1996
• Where: HPDC
• Authors: Jarek Nieplocha, Robert J. Harrison
• Keywords: Distributed And Parallel Computing, Global Array, Global Array Shared-memory, HPDC 1996, Mirrored Arrays