Simulations of QCD in the Era of Sustained Tflop/s Computing
Please always quote using this URN: urn:nbn:de:0297-zib-10623
- 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 |
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Document Type: | ZIB-Report |
Date of first Publication: | 2008/02/26 |
Series (Serial Number): | ZIB-Report (07-48) |
ISSN: | 1438-0064 |
ZIB-Reportnumber: | 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. |