Parallelization spectroscopy: analysis of thread-level parallelism in hpc programs

Authors:
Arun Kejariwal;Calin Casçaval
Affiliations:
University of California, Irvine, Irvine, USA;IBM, Yorktown Heights, USA
Venue:
Proceedings of the 14th ACM SIGPLAN symposium on Principles and practice of parallel programming
Year:
2009

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Abstract

In this paper, we present a method - parallelization spectroscopy - for analyzing the thread-level parallelism available in production High Performance Computing (HPC) codes.We survey a number of techniques that are commonly used for parallelization and classify all the loops in the case study presented using a sensitivity metric: how likely is a particular technique is successful in parallelizing the loop.