BenchBSSN Benchmarking Application

Description

The BenchBSSN benchmark application is the computational kernel for the state of the art black hole simulations performed by the numerical relativity group at the Albert Einstein Institute (Max Planck Institute for Gravitational Physics). Their production simulations are typically run across hundreds of processors for days at a time.

This benchmark uses some thorns which are not part of the Cactus distribution, but are freely available from the AEI CVS repository. Note that this evolution scheme is still being enhanced and developed and so benchmark numbers may change somewhat in time.

Information

• ThornList for BenchBSSN: BenchBSSN.th
• Parameter file for BenchBSSN: In AEIThorns/ADM_BSSN thorn, ADM_BSSN/par/BenchBSSN_40l.par and ADM_BSSN/par/BenchBSSN_80l.par

Floating Point Operation Count

Floating point operations are counted using perfex on our Origin 2000 (using perfex -e 21). The origin counts a multiply and add as a single operation, so we list numbers with this switched both on and off (compile with -TARG:madd=OFF to switch it off).