Title:
Experiences Parallelizing a Commercial Network Simulator
Experiences Parallelizing a Commercial Network Simulator
Authors
Wu, Hao
Fujimoto, Richard M.
Riley, George F.
Fujimoto, Richard M.
Riley, George F.
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Abstract
Most current approaches of parallel simulation focus on
building new parallel simulation engines that require the
development of new models and software. An alternate,
emerging approach is to extend sequential simulators to
execute on parallel computers. We describe a methodology
for realizing parallel simulations in this manner. This work
is specifically concerned with parallelization of commercial
simulators where source code for some or all of the sequential
simulator is not available. We describe our experiences
in applying this methodology to realize a parallel
version of the OPNET simulator for modeling computer
networks. We show significant speedup can be readily obtained
for some OPNET models if proper partitioning
strategies are applied and the simulation attributes are
tuned appropriately. However, we observe that substantial
modifications to other OPNET models are needed to
achieve efficient parallel execution because of their extensive
use of global variables and “zero lookahead events”.
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Date Issued
2001-12
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240195 bytes
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Text
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Proceedings