%0 Conference Proceedings %B The 2nd International Conference on Cloud and Green Computing (submitted) %D 2012 %T Energy Footprint of Advanced Dense Numerical Linear Algebra using Tile Algorithms on Multicore Architecture %A Jack Dongarra %A Hatem Ltaeif %A Piotr Luszczek %A Vincent M Weaver %B The 2nd International Conference on Cloud and Green Computing (submitted) %C Xiangtan, Hunan, China %8 2012-11 %G eng %0 Conference Proceedings %B International Workshop on Power-Aware Systems and Architectures %D 2012 %T Measuring Energy and Power with PAPI %A Vincent M Weaver %A Matt Johnson %A Kiran Kasichayanula %A James Ralph %A Piotr Luszczek %A Dan Terpstra %A Shirley Moore %K papi %X Energy and power consumption are becoming critical metrics in the design and usage of high performance systems. We have extended the Performance API (PAPI) analysis library to measure and report energy and power values. These values are reported using the existing PAPI API, allowing code previously instrumented for performance counters to also measure power and energy. Higher level tools that build on PAPI will automatically gain support for power and energy readings when used with the newest version of PAPI. We describe in detail the types of energy and power readings available through PAPI. We support external power meters, as well as values provided internally by recent CPUs and GPUs. Measurements are provided directly to the instrumented process, allowing immediate code analysis in real time. We provide examples showing results that can be obtained with our infrastructure. %B International Workshop on Power-Aware Systems and Architectures %C Pittsburgh, PA %8 2012-09 %G eng %R 10.1109/ICPPW.2012.39 %0 Journal Article %J CloudTech-HPC 2012 %D 2012 %T PAPI-V: Performance Monitoring for Virtual Machines %A Matt Johnson %A Heike McCraw %A Shirley Moore %A Phil Mucci %A John Nelson %A Dan Terpstra %A Vincent M Weaver %A Tushar Mohan %K papi %X This paper describes extensions to the PAPI hardware counter library for virtual environments, called PAPI-V. The extensions support timing routines, I/O measurements, and processor counters. The PAPI-V extensions will allow application and tool developers to use a familiar interface to obtain relevant hardware performance monitoring information in virtual environments. %B CloudTech-HPC 2012 %C Pittsburgh, PA %8 2012-09 %G eng %R 10.1109/ICPPW.2012.29 %0 Conference Proceedings %B 6th Workshop on Virtualization in High-Performance Cloud Computing %D 2011 %T Evaluation of the HPC Challenge Benchmarks in Virtualized Environments %A Piotr Luszczek %A Eric Meek %A Shirley Moore %A Dan Terpstra %A Vincent M Weaver %A Jack Dongarra %K hpcc %B 6th Workshop on Virtualization in High-Performance Cloud Computing %C Bordeaux, France %8 2011-08 %G eng %0 Conference Proceedings %B 3rd Workshop on Functionality of Hardware Performance Monitoring %D 2010 %T Can Hardware Performance Counters Produce Expected, Deterministic Results? %A Vincent M Weaver %A Jack Dongarra %K papi %B 3rd Workshop on Functionality of Hardware Performance Monitoring %C Atlanta, GA %8 2010-12 %G eng