...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fortschritte der Physik >Analytic Multi-Core Processor Model for Fast Design-Space Exploration
【24h】

Analytic Multi-Core Processor Model for Fast Design-Space Exploration

机译：快速设计空间探索的分析多核处理器模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Simulators help computer architects optimize system designs. The limited performance of simulators even of moderate size and detail makes the approach infeasible for design-space exploration of future exascale systems. Analytic models, in contrast, offer very fast turn-around times. In this paper we propose an analytic multi-core processor-performance model that takes as inputs a) a parametric microarchitecture-independent characterization of the target workload, and b) a hardware configuration of the core and the memory hierarchy. The processor-performance model considers instruction-level parallelism (ILP) per type, models single instruction, multiple data (SIMD) features, and considers cache and memory-bandwidth contention between cores. We validate our model by comparing its performance estimates with measurements from hardware performance counters on Intel Xeon and ARM Cortex-A15 systems. We estimate multi-core contention with a maximum error of 11.4 percent. The average single-thread error increases from 25 percent for a state-of-the-art simulator to 59 percent for our model, but the correlation is still 0.8, a high relative accuracy, while we achieve a speedup of several orders of magnitude. With a much higher capacity than simulators and more reliable insights than back-of-the-envelope calculations it makes automated design-space exploration of exascale systems possible, which we show using a real-world case study from radio astronomy.
机译：Simulator帮助计算机架构师优化系统设计。模拟器的性能有限，即使是适度的大小和细节也使得该方法对未来Exascale系统的设计空间探索不可行。相比之下，分析模型提供了非常快的转弯时间。在本文中，我们提出了一个分析多核处理器 - 性能模型，它是输入a）目标工作负载的参数微架构无关表征，b）核心和存储器层次结构的硬件配置。处理器 - 性能模型考虑每种类型的指令级并行性（ILP），模拟单个指令，多个数据（SIMD）功能，并考虑核心之间的缓存和内存带宽争用。我们通过比较Intel Xeon和ARM Cortex-A15系统上的硬件性能计数器的测量结果来验证我们的模型。我们估计多核争用，最大误差为11.4％。平均单线误差从最先进的模拟器的25％增加到我们的模型的59％，但相关性仍然是0.8，相对高的准确性，而我们达到了几个数量级的加速。比模拟器的容量更高，更可靠的见解，而不是信封的重新计算，它使Exastale Systems的自动化设计空间探索能够展示使用射频天文学的真实案例研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号