Performance Characteristics of a Cosmology Package on Leading HPC Architectures
Performance Characteristics of a Cosmology Package on Leading HPC Architectures
复制标题
领先 HPC 架构上的 Cosmology 包的性能特征
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
L. Oliker
中科院分区：
文献类型：
--
作者：
J. Carter;J. Borrill;L. Oliker
宇宙微波背景（CMB）是宇宙大爆炸后大约40万年的快照。CMB中的各向异性模式携带着关于宇宙学基本参数的丰富信息。提取这些信息是一项计算成本极高的奋进，需要大规模并行计算机和能够利用它们的软件包，其中一个软件包是微波各向异性数据集计算分析包（MADCAP）已被用于分析来自许多CMB实验的数据在这项工作中，我们比较了MADCAP在基于矢量的地球模拟器（ES）和Cray X1架构以及两个领先的超标量系统IBM Power 3和Power 4上的性能。和供应商提供的数值库，同时隔离I/O文件系统作为所有平台的关键瓶颈。
The Cosmic Microwave Background (CMB) is a snapshot of the Universe some 400,000 years after the Big Bang The pattern of anisotropies in the CMB carries a wealth of information about the fundamental parameters of cosmology Extracting this information is an extremely computationally expensive endeavor, requiring massively parallel computers and software packages capable of exploiting them One such package is the Microwave Anisotropy Dataset Computational Analysis Package (MADCAP) which has been used to analyze data from a number of CMB experiments In this work, we compare MADCAP performance on the vector-based Earth Simulator (ES) and Cray X1 architectures and two leading superscalar systems, the IBM Power3 and Power4 Our results highlight the complex interplay between the problem size, architectural paradigm, interconnect, and vendor-supplied numerical libraries, while isolating the I/O filesystem as the key bottleneck across all the platforms.