Influence of the stride on the cache utilization in the IBM 3090 VF

Authors:
Giovanni Erbacci;Giuseppe Paruolo;Giancarlo Tagliavini
Affiliations:
-;-;-
Venue:
ICS '89 Proceedings of the 3rd international conference on Supercomputing
Year:
1989

Citing 6
Cited 0

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Programming in VS Fortran on the IBM 3090 for Maximum Vector Performance

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Programming style on the IBM 3090 vector facility considering both performance ad flexibility

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Computer Architecture and Parallel Processing

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Abstract

The cache memory is of great importance for the performance of computers like the IBM 3090 VF, thus a good cache utilization is mandatory. To this purpose it is essential to consider the stride of the vectors.A model of the cache is defined to calculate the percentage of cache utilization for a load of one vector with a certain stride. A mathematical formulation of the model and an experimental validation on the IBM 3090 VF are given. Finally, the question of how the model can be used when the cache utilization of real applications has to be predicted, is briefly addressed.