标题： Cray T3D和新兴架构在树冠QCD应用中的性能 显示英文标题

标题： Performance of the Cray T3D and Emerging Architectures on Canopy QCD Applications

摘要： Cray T3D是一种具有NUMA共享内存功能的MIMD系统，在理论上具有非常低的通信延迟，可以支持用于网格应用的Canopy框架。 CANOPY已移植到T3D上，目的是使其可供各种用户使用。 在费米国家加速器实验室的ACPMAPS上广泛运行的五个QCD应用程序上对运行Canopy的T3D性能进行了基准测试，这些应用程序需要各种数据访问模式。 净性能和扩展行为显示其相对于峰值Gflops的效率几乎与在ACPMAPS上实现的效率相同。 介绍了对影响性能的主要因素的详细研究。 将此分析推广到新出现的一系列商业系统，揭示了它们的局限性所在。 在这些应用程序上，预期效率不会超过25%；消除由于Canopy带来的开销将改善情况，但改善幅度不到两倍。 显示英文摘要

摘要： The Cray T3D, an MIMD system with NUMA shared memory capabilities and in principle very low communications latency, can support the Canopy framework for grid-oriented applications. CANOPY has been ported to the T3D, with the intent of making it available to a spectrum of users. The performance of the T3D running Canopy has been benchmarked on five QCD applications extensively run on ACPMAPS at Fermilab, requiring a variety of data access patterns. The net performance and scaling behavior reveals an efficiency relative to peak Gflops almost identical to that achieved on ACPMAPS. Detailed studies of the major factors impacting performance are presented. Generalizations applying this analysis to the newly emerging crop of commercial systems reveal where their limitations will lie. On these applications, efficiencies of above 25\% are not to be expected; eliminating overheads due to Canopy will improve matters, but by less than a factor of two.