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Porting and Optimising a Quantum-Chemistry FCI Algorithm on the Cray T3D

机译:在Cray T3D上移植和优化量子化学FCI算法

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摘要

A Full Configuration Interaction algorithm has been optimised for a Cray T3D massively parallel computer. A preliminary version of the code showed good scalability, but also load unbalancing problems and synchronisation overheads. In this paper are described several ways to overcome these problems. A optimal solution has been found to eliminate the need of synchronisation points while load unbalancing appears to depend on the theoretical formulation of the problem. Also in this case some hints are suggested for future works.
机译:完整配置交互算法已针对Cray T3D大规模并行计算机进行了优化。该代码的初步版本显示了良好的可伸缩性,但是也存在负载不平衡问题和同步开销。本文描述了克服这些问题的几种方法。找到了一种最佳解决方案,可以消除对同步点的需求,而负载不平衡似乎取决于问题的理论表述。同样在这种情况下,建议为将来的作品提供一些提示。

著录项

  • 来源
  • 会议地点 Milan(IT);Milan(IT)
  • 作者单位

    Cray Research S.r.l.,via Vivaio 11,1-20122 Milano - Italy;

    CINECA, via Magnanelli 6/3,I-40033 Casalecchio di Reno (BO) - Italy;

    Dipartimento di Chimica Fisica ed Inorganica - Universita di Bologna, viale Risorgimento 4, I-40136 Bologna-Italy;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TQ4;
  • 关键词

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