Simulations of QCD in the Era of Sustained Tflop/s Computing
- The latest machine generation installed at supercomputer centres in Germany offers a peak performance in the tens of Tflop/s range. We study performance and scaling of our quantum chromodynamics simulation programme BQCD that we obtained on two of these machines, an IBM Blue Gene/L and an SGI Altix 4700. We compare the performance of Fortran/MPI code with assembler code. The latter allows to exploit concurrency at more levels, in particular in overlapping communication and computation as well as prefetching data from main memory.
|Author:||Thomas Streuer, Hinnerk Stüben|
|Date of first Publication:||2008/02/26|
|Series (Serial Number):||ZIB-Report (07-48)|
|Published in:||Appeared in C. Bischof, M. Brückner, P. Gibbon, G. Goubert, T. Lippert, B. Mohr, F. Peters (Eds.), Parallel Computing: Architectures, Algorithms and Applications, NIC Series, Vol. 38 (2007), 535--542.|