Parallelization of a multi-blocked multithreaded general CFD code for heat transfer analysis
Författare
Summary, in English
This article reports on a parallel implementation of a general 3D multi-block CFD code. The parallelization is achieved by using three strategies. Firstly, it is done on dual-processor PC-clusters where Windows NT systems are running. A multi-thread programming model is adopted for the multi-block code, where one thread corresponds to a block. Shared memory is used for the exchange of inner-boundaries between neighboring blocks (threads) on the same node, while WinSockets are employed for those on different nodes. Secondly, the parallelization is extended to UNIX operating system. MPI is applied for all the message passing between different processors, including those on the same node. Thirdly, Pthreads (POSIX threads), a standardized application interface for threads, are adopted to take the advantage of the shared-memory feature of the SMP nodes, while MPI is only applied for the message passing between processors on different nodes. In all the strategies, a static load-balancing method is employed for equitable distribution of computational work to specified nodes. An example of turbulent heat transfer and fluid flow in a 3D straight channel is provided to show the speedup of the parallel calculation. Detailed comparison is made to evaluate the efficiency of different strategies.
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Sidor
157-166
Publikation/Tidskrift/Serie
Advances in High Performance Computing
Volym
7
Dokumenttyp
Konferensbidrag
Förlag
WIT Press
Ämne
- Energy Engineering
Conference name
Seventh International Conference on Application of High-Performance Computing in Engineering, HPC VII
Conference date
2002-09-23 - 2002-09-25
Conference place
Bologna, Italy
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1368-7638
- ISBN: 1-85312-924-0