Why doesn SPEC HPC2002 provide a composite or aggregate performance metric?
Providing a composite or aggregate performance metric would undermine the purpose of SPEC HPC2002. SPEC HPC2002 is designed to inform users about how industrial-strength applications in their fields of analysis will perform. These users are particularly interested in how well their applications will scale as parallelism increases. This is why SPEC HPC2002 reporting pages provide metrics for systems with different numbers of processors running the same application and problem size.