Cray speak on optimisation & shared memory using ‘Reveal’ at Multicore Challenge 2014

At this year’s Multicore Challenge (2014) conference, Tom Edwards from the Cray Centre of Excellence in Edinburgh will be providing an overview of Reveal, a tool developed by Cray to help users browse their source code and quickly retrieve compiler optimization information and determine which high-level loops could most benefit from OpenMP parallelism.

Most applications running on large High Performance Computer systems, like the Cray XC30, use a distributed programming model like MPI or UPC, but don’t take advantage of shared memory programming possibilities within a multi-core node. To move forward and harness the power of the next generation systems, application developers face significant efforts as they prepare their programs to take advantage of the increasing number of cores and threads available to them. The Cray Reveal tool extends Cray’s existing performance measurement, analysis and visualization technology by combining runtime performance statistics and program source code visualization with Cray compiler optimization feedback.

Using a program library provided by the Cray Compiling Environment (CCE) and performance data collected by the Cray Performance, Measurement, Analysis, and Porting Tools (CPMAT), users of Reveal can:

  • Exploit multi-core through shared memory OpenMP directives
  • Integrate profile data with application source code
  • Automate dependency analysis and scoping of OpenMP for loops

About Tom Edwards

Tom is an Application Analyst and has worked for the past five years on HECToR and now on ARCHER, the UK’s largest Academic Supercomputer. Tom’s expertise in High Performance Computing and in particular in porting applications on multicore systems has benefited a wide spectrum of scientific users and developers across the environmental, engineering and academic space. Before joining Cray Tom was at the Met Office working on weather models before completing his PhD in High Performance Computational Magneto-hydrodynamics at the University of Edinburgh.

Additional Information

For additional information on the Multicore Challenge Conference and Tool Demonstrations (23 September, 2014 | Bristol, UK) Click Here.