Large-scale computing on clustered vector multiprocessors

Authors:
A. Kamel;P. Sguazzero;V. Zecca
Affiliations:
IBM Scientific Center, Thormohlensgate 55, 5008 Bergen, Norway;IBM ECSEC, Via Giorgione 159, 00147 Rome, Itlay;IBM ECSEC, Via Giorgione 159, 00147 Rome, Itlay
Venue:
Proceedings of the 1990 ACM/IEEE conference on Supercomputing
Year:
1990

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Abstract

A two-level parallel implementation of a large scale geophysical simulation code is presented. The software/hardware environment consists of the IBM Clustered FORTRAN, an extension of FORTRAN, allowing a single application program to execute concurrently on two IBM 3090 computers (first level of parallelism) while exploiting the multiple vector processors of each 3090 system (second level of parallelism). The experiments reported show that the problem is characterized by large task granularity and small communication/computation ratio, thus leading to sustained parallel speed-ups of nearly ten on a cluster of two 3090 computers, totaling twelve vector processors.