Doctoral seminar

Optimizing Application Performance on Petascale Supercomputers:
Driven by application requirements and accelerated by current trends in microprocessor design, the number of processor cores on modern supercomputers grows from generation to generation. This imposes scalability demands not only on applications but also on the software tools needed for their development. The open-source toolset Scalasca has been designed to analyze the performance behavior of parallel applications specifically on such large-scale systems. A distinctive feature is its ability to identify program wait states, which often present a major challenge in achieving satisfactory performance – especially when trying to scale communication-intensive applications to large processor counts.
In this talk, we review the current toolset architecture, emphasizing its scalable design and the role of the different components in transforming raw measurement data into useful knowledge of execution behavior. The scalability and effectiveness of Scalasca are surveyed from experience in measuring and analyzing real-world applications on a range of computer systems.

Speaker: Prof. Dr. Felix Wolf, Parallel Programming, German Research School for Simulation Sciences, RWTH Aachen University

Date: Monday, April 12, 2010

Time: 16:15

Location: Seminar Room 102, Schinkelstr. 2a, German Research School for Simulation Sciences, 52062 Aachen