Parallelization of the discrete transfer method: Two different approaches
- Technical Univ. of Lisbon, Lisboa (Portugal)
Two different parallelization strategies of the discrete transfer method are presented and discussed. In one of them, the ray decomposition, each processor performs the calculations for the whole domain for a subset of radiation beams. In the other one, the domain decomposition, the domain is split up into subdomains and each processor performs all the calculations within each subdomain. Two radiation problems in two-dimensional square enclosures containing an emitting-absorbing medium were studied. It was concluded that efficiencies slightly above 90% are achievable with 16 processors by using the ray decomposition approach, while the efficiency of the domain decomposition approach drops very fast with the increase of the number of processors. The marked increase of the number of iterations with the increase of the number of processors is a shortcoming of the domain decomposition parallelization method, and places an upper limit on the maximum achievable efficiency.
- OSTI ID:
- 395261
- Report Number(s):
- CONF-960815--; ISBN 0-7918-1507-2
- Country of Publication:
- United States
- Language:
- English
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