Summary: Improving the Accuracy vs. Speed Tradeoff for
Simulating Shared­Memory Multiprocessors with ILP Processors \Lambda y
Murthy Durbhakula, Vijay S. Pai, Sarita Adve
Department of Electrical and Computer Engineering
Rice University
Houston, Texas 77005
fmurthyjvijaypaijsaritag@rice.edu
Rice University ECE Technical Report 9802, April 1998, revised December 1998
Abstract
Previous simulators for shared­memory architectures
have imposed a large tradeoff between simulation accu­
racy and speed. Most such simulators model simple pro­
cessors that do not exploit common instruction­level paral­
lelism (ILP) features, consequently exhibiting large errors
when used to model current systems. A few newer simula­
tors model current ILP processors in detail, but we find them
to be about ten times slower. We propose a new simulation
technique, based on a novel adaptation of direct execution,
that alleviates this accuracy vs. speed tradeoff.
We compare the speed and accuracy of our new simu­

Source: Adve, Sarita - Department of Computer Science, University of Illinois at Urbana-Champaign

Collections: Computer Technologies and Information Sciences