Sensitivity analysis of parallel applications to local and non-local interference

  • Vaddadi P. Chandu
  • Karandeep Singh
Conference paper


The environment in which a parallel application is executed has high impact on the performance of the application due to interference caused by various factors in the execution environment. A detailed understanding of the sensitivity of the application to the parameters describing the execution environment can be of great help in (a) predicting a suitable target machine model for the application, (b) predicting its performance on the target machine, and (c) any algorithmic bottlenecks. In this paper, we analyze a suite of parallel applications for their sensitivity to local and non-local interference arising due to various factors in a parallel environment. We create a test bed consisting of five different parallel applications taken from different sources and analyze their sensitivity to single node and multi-node perturbations and show that parallel applications can behave very differently under different conditions of interference in the environment in which they are running. The main contributions of this paper are: (a) studying a suite of parallel algorithms for their sensitivity to local and non-local interference, (b) demonstrate that an application can behave differently to different interference levels in the environment, (c) demonstrate that the sensitivity of an application can be quantified as its absorption ratio at a given interference level.


Single Node Message Passing Interface Parallel Application Execution Environment Interference Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer 2007

Authors and Affiliations

  • Vaddadi P. Chandu
    • 1
  • Karandeep Singh
    • 2
  1. 1.Georgia Institute of TechnologyAtlanta
  2. 2.University of Maryland, College Park

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