Scalasca summary analysis of HemeLB application execution with 300000 MPI processes on SuperMUC-NG

The CompBioMed HPC CoE flagship application HemeLB was run with a 6.4 micron resolution "circle of Willis" geometry dataset on LRZ's SuperMUC-NG supercomputer, and its execution performance with 300000 MPI processes on 6250 dual 24-core compute nodes measured by Score-P (including PAPI hardware counters) and analysed by Scalasca.

Two compute nodes with poor memory performance can be distinguished by examining the PAPI_RES_STL metric for resource stall cycles.