DD-αAMG on QPACE 3

DD-αAMG on QPACE 3
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QPACE 3 上的 DD-αAMG

DOI:
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发表时间:
2017
期刊:
arXiv.org
影响因子:
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通讯作者:
T. Wettig
T. Wettig
中科院分区:
--
文献类型:
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作者:
Peters Georg;Daniel Richtmann;T. Wettig

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我们描述了将DD-αAMG求解器的里根斯堡实现从QPACE 2移植到QPACE 3的经验。我们首先回顾一下代码是如何从第一代英特尔至强融核处理器(Knights Corner)移植到其后续处理器(Knights Landing)的。然后,我们描述了所需的开关从InfiniBand到Omni-Path. Finally的通信库中的修改,我们提出了一个单一的处理器上的代码的性能,以及在许多节点上的缩放,在这两种情况下的加速因子接近理论预期。
We describe our experience porting the Regensburg implementation of the DD-αAMG solver from QPACE 2 to QPACE 3. We first review how the code was ported from the first generation Intel Xeon Phi processor (Knights Corner) to its successor (Knights Landing). We then describe the modifications in the communication library necessitated by the switch from InfiniBand to Omni-Path. Finally, we present the performance of the code on a single processor as well as the scaling on many nodes, where in both cases the speedup factor is close to the theoretical expectations.
DOI: 10.1137/130919507
发表时间: 2013-03
期刊: SIAM J. Sci. Comput.
影响因子: --
作者:
A. Frommer;K. Kahl;S. Krieg;B. Leder;M. Rottmann
通讯作者: A. Frommer;K. Kahl;S. Krieg;B. Leder;M. Rottmann