[Colloquium] TODAY! Seminar Announcement: Active-Learning-based Surrogate Models for Empirical Performance Tuning

[Ninfa Mayorga]

Computation Institute Presentation

Speaker:  Prasanna Balaprakash, Mathematics and Computer Science Division, Argonne National Laboratory
Host:  Stefan Wild
Date:  February 13, 2014
Time: 12:30 PM - 1:30 PM
Location:  Argonne National Laboratory, TCS Building 240, Room 5172.  This talk will be broadcast via Adobe Connect (see below)

Active-Learning-based Surrogate Models for Empirical Performance Tuning

Abstract:  
Performance models have profound impact on hardware-software co-design, architectural explorations, and performance tuning of scientific applications. Developing algebraic performance models is becoming an increasingly challenging task. In such situations, a statistical surrogate-based performance model, fitted to a small number of input-output points obtained from empirical evaluation on the target machine, provides a range of benefits. Accurate surrogates can emulate the output of the expensive empirical evaluation at new inputs and therefore can be used to test and/or aid search, compiler, and autotuning algorithms. We present an iterative parallel algorithm that builds surrogate performance models for scientific kernels and work-loads on single-core and multicore and multinode architectures. We tailor to our unique parallel environment an active learning heuristic popular in the literature on the sequential design of computer experiments in order to identify the code variants whose evaluations have the best potential to improve the surrogate. We use the proposed approach in a number of case studies to illustrate its effectiveness.

Information:  Lunch will be provided

This talk will be broadcast to the University of Chicago, Searle 240A, 5735 S. Ellis Ave.  You may join the broadcast from your location by using Adobe Connect.

To join the meeting:
http://anl.adobeconnect.com/tcs-ci
-Enter as a guest

If you have never attended an Adobe Connect meeting before:

Test your connection:
http://anl.adobeconnect.com/common/help/en/support/meeting_test.htm

Get a quick overview: http://www.adobe.com/go/connectpro_overview




-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.cs.uchicago.edu/pipermail/colloquium/attachments/20140213/87e2cc9d/attachment.htm