Characterizing and Understanding PDES Behavior on Tilera Architecture
PADS '12 Proceedings of the 2012 ACM/IEEE/SCS 26th Workshop on Principles of Advanced and Distributed Simulation
Performance Analysis of a Multithreaded PDES Simulator on Multicore Clusters
PADS '12 Proceedings of the 2012 ACM/IEEE/SCS 26th Workshop on Principles of Advanced and Distributed Simulation
Assessing load-sharing within optimistic simulation platforms
Proceedings of the Winter Simulation Conference
Can PDES scale in environments with heterogeneous delays?
Proceedings of the 2013 ACM SIGSIM conference on Principles of advanced discrete simulation
Interference resilient PDES on multi-core systems: towards proportional slowdown
Proceedings of the 2013 ACM SIGSIM conference on Principles of advanced discrete simulation
Accelerating optimistic HLA-based simulations in virtual execution environments
Proceedings of the 2013 ACM SIGSIM conference on Principles of advanced discrete simulation
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Parallel Discrete Event Simulation (PDES) can substantially improve performance and capacity of simulation, allowing the study of larger, more detailed models, in shorter times. PDES is a fine-grained parallel application whose performance and scalability are limited by communication latencies. Traditionally, PDES simulation kernels use processes that communicate using message passing, shared memory is used to optimize message passing for processes running on the same machine. We report on our experiences in implementing a thread-based version of the ROSS simulator. The multithreaded implementation eliminates multiple message copying and significantly minimizes synchronization delays. We study the performance of the simulator on two hardware platforms: a Core i7 machine and a 48-core AMD Opteron Magny-Cours system. We identify performance bottlenecks and propose and evaluate mechanisms to overcome them. Results show that multithreaded implementation improves performance over the MPI version by up to a factor of 3 for the Core i7 machine and 1.2 on Magny-cours for 48-way simulation.