On the Reproducibility of MPI Reduction Operations
On the Reproducibility of MPI Reduction Operations
复制标题
关于 MPI 约简操作的再现性
DOI：
10.1109/hpcc.and.euc.2013.65
复制
发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Kimpe
中科院分区：
文献类型：
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作者：
P. Balaji;D. Kimpe
许多科学应用程序都要经过彻底的验证和验证（“V&V”）过程，以证明计算机模拟确实反映了可以通过物理实验分析的结果。考虑到V&V过程的复杂性和所需的时间，已经验证和验证的应用程序对于可能影响其结果的可再现性的更改通常是保守的。在极端情况下，一些应用程序需要模拟的位可再现性。因此，对系统上的应用程序、硬件或软件所做的任何更改都需要保持应用程序的位可再现性。然而，这样的约束可以在许多方面极大地影响系统的性能效率。在本文中，我们分析了这种位可再现性对MPI缩减操作的性能效率的影响。
Many scientific applications go through a thorough validation and verification ("V&V'") process to demonstrate that the computer simulation does, in fact, mirror what can be analyzed through physical experimentation. Given the complexity of and the time required for the V&V process, applications that have been validated and verified are typically conservative with respect to changes that might impact the reproducibility of their results. In the extreme case, some applications require bit wise reproducibility for their simulations. Thus, any change made to the application, the hardware, or the software on the system needs to preserve the bit wise reproducibility of the application. Such a constraint, however, can drastically affect the performance efficiency of the system in many ways. In this paper, we analyze the impact of such bit wise reproducibility on the performance efficiency of MPI reduction operations.
影响因子：
2.1
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