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2011.62: HydraMP: Exploiting shared memory parallelism in HYDRA with OpenMP

2011.62: Nicholas Dingle (2011) HydraMP: Exploiting shared memory parallelism in HYDRA with OpenMP. In: 27th UK Performance Engineering Workshop (UKPEW 2011), 7-8 July 2011, Bradford, UK.

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Multicore CPUs are now found in desktops, servers and supercomputers but many existing parallel performance analysis tools were designed for the single-core distributed-memory world. We investigate the practicality of taking an existing tool, namely the HYDRA response time analyser, and parallelising it with OpenMP to produce a multithreaded implementation suitable for execution on multicore shared-memory machines. We discuss the amount of software engineering work required and show that only a small number of lines of code need to be added to achieve dramatic speed-ups over the serial version. We also compare the run-times of our OpenMP-parallelised version with existing MPI-parallelised code on the same hardware.

Item Type:Conference or Workshop Item (Paper)
Subjects:MSC 2000 > 60 Probability theory and stochastic processes
MSC 2000 > 65 Numerical analysis
MSC 2000 > 68 Computer science
MIMS number:2011.62
Deposited By:Dr Nicholas Dingle
Deposited On:02 December 2011

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