The development of Scalasca was co-funded by the HBP during the Ramp-up Phase. This page is kept for reference but will no longer be updated.

Scalasca is a software tool that supports the performance optimisation of parallelprograms by measuring and analysing their runtime behaviour. The analysis identifies potential performance bottlenecks – in particular those concerning communication and synchronization – and offers guidance in exploring their causes.

Scalasca targets mainly scientific and engineering applications based on the programming interfaces MPI and OpenMP, including hybrid applications based on a combination of the two. The tool has been specifically designed for use on large-scale systems including IBM Blue Gene and Cray XT, but is also well suited for small- and medium-scale HPC platforms. The software is available for free download under the New BSD open-source license.

Scalasca is part of a larger set of tools for parallel performance analysis and debugging developed by the “Virtual Institute – High Productivity Supercomputing” (VI-HPS) consortium. Further documentation, training and support are available through VI-HPS.

• High-level Tool Descriptions: VI-HPS Tools Guide and http://www.vi-hps.org/tools/
• Index to VI-HPS tool documentation: http://www.vi-hps.org/training/doc/
• Training classes: VI-HPS Tuning Workshops
• Course material: http://www.vi-hps.org/training/material/

The new version 2.2.2 provides the following new features (externally funded) as compared to version 2.2 that was part of the HBP-internal Platform Release in M18:

• Power8, ARM64, and Intel Xeon Phi support
• Pthread and OpenMP tasking support
• Improved analysis
• Prototype OmpSs support