Enabling parallel computing in crash
Enabling parallel computing in crash
复制标题
在崩溃时启用并行计算
DOI:
10.1111/j.1365-2966.2011.18401.x
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发表时间:
2011
影响因子:
4.8
通讯作者:
Partl A. M
中科院分区:
文献类型:
--
作者:
Partl A. M
We present the new parallel version (pcrash2) of the cosmological radiative transfer codecrash2for distributed memory supercomputing facilities. The code is based on a static domain decomposition strategy inspired by geometric dilution of photons in the optical thin case that ensures a favourable performance speed-up with an increasing number of computational cores. Linear speed-up is ensured as long as the number of radiation sources is equal to the number of computational cores or larger. The propagation of rays is segmented and rays are only propagated through one sub-domain per time-step to guarantee an optimal balance between communication and computation. We have extensively checkedpcrash2with a standardized set of test cases to validate the parallelization scheme. The parallel version ofcrash2can easily handle the propagation of radiation from a large number of sources and is ready for the extension of the ionization network to species other than hydrogen and helium.
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2001
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