Integrated Performance Monitoring of a Cosmology Application on Leading HEC Platforms

The Cosmic Microwave Background (CMB) is an exquisitely sensitive probe of the fundamental parameters of cosmology. Extracting this information is computationally intensive, requiring massively parallel computing and sophisticated numerical algorithms. In this work we present MADbench, a lightweight version of the MADCAP CMB power spectrum estimation code that retains the operational complexity and integrated system requirements. In addition, to quantify communication behavior across a variety of architectural platforms, we introduce the Integrated Performance Monitoring (IPM) package: a portable, lightweight, and scalable tool for effectively extracting MPI message-passing overheads. A performance characterization study is conducted on some of the world’s most powerful supercomputers, including the superscalar Seaborg (IBM Power3+) and CC-NUMA Columbia (SGI Altix), as well as the vector-based Earth Simulator (NEC SX-6 enhanced) and Phoenix (Cray X1) systems. In-depth analysis shows...

• Type: Conference
• Year: 2005
• Where: ICPP
• Authors: Julian Borrill, Jonathan Carter, Leonid Oliker, David Skinner, Rupak Biswas
• Keywords: Distributed And Parallel Computing, ICPP 2005, MADCAP CMB Power, Massively Parallel Computing, MPI Message-passing Overheads