Recent Advances of SKaMPI

The goal of SKaMPI is the creation of a database containing performance measurements of parallel computers in terms of MPI. This data supports software developers in creating portable and fast programs. To meet this goal port ability is a crucial property of our this benchmark. A large number of platforms to test on and to examine is important for the realization of our vision. Since access to the Stuttgart Cray T3E in October 1998 we were able to improve the code’s portability, to solve memory alignment problems, to compare the quality Cray’s implemented MPI gather algorithm to the one used in IBM’s SP MPI library, and to investigate the blocking behavior of collective MPI operations. Recently we added the parameterization of measurements suites with (even user defined) datatypes.