On the instrumentation of OpenMP and OmpSs tasking constructs

H Servat, X Teruel, G Llort, A Duran, J Giménez… - Euro-Par 2012: Parallel …, 2013 - Springer
Euro-Par 2012: Parallel Processing Workshops: BDMC, CGWS, HeteroPar, HiBB …, 2013Springer
Parallelism has become more and more commonplace with the advent of the multicore
processors. Although different parallel programming models have arisen to exploit the
computing capabilities of such processors, developing applications that take benefit of these
processors may not be easy. And what is worse, the performance achieved by the parallel
version of the application may not be what the developer expected, as a result of a dubious
utilization of the resources offered by the processor. We present in this paper a fruitful …
Abstract
Parallelism has become more and more commonplace with the advent of the multicore processors. Although different parallel programming models have arisen to exploit the computing capabilities of such processors, developing applications that take benefit of these processors may not be easy. And what is worse, the performance achieved by the parallel version of the application may not be what the developer expected, as a result of a dubious utilization of the resources offered by the processor.
We present in this paper a fruitful synergy of a shared memory parallel compiler and runtime, and a performance extraction library. The objective of this work is not only to reduce the performance analysis life-cycle when doing the parallelization of an application, but also to extend the analysis experience of the parallel application by incorporating data that is only known in the compiler and runtime side. Additionally we present performance results obtained with the execution of instrumented application and evaluate the overhead of the instrumentation.
Springer
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