TY - GEN
T1 - Exploiting lookahead in synchronous parallel simulation
AU - Peterson, Gregory D.
AU - Chamberlain, Roger D.
PY - 1993/12/1
Y1 - 1993/12/1
N2 - The performance impact of event simultaneity and barrier synchronization on globally-clocked, discrete-event simulations is quantified using both a performance model and empirical results. We investigate the use of both conservative and optimistic lookahead to improve event simultaneity. The use of conservative lookahead is shown to be clearly beneficial, significantly improving overall simulation performance. Optimistic lookahead, however, is more problematic. Empirical results show that the overhead needed to support optimistic lookahead defeats the performance gains due to increased simultaneity.
AB - The performance impact of event simultaneity and barrier synchronization on globally-clocked, discrete-event simulations is quantified using both a performance model and empirical results. We investigate the use of both conservative and optimistic lookahead to improve event simultaneity. The use of conservative lookahead is shown to be clearly beneficial, significantly improving overall simulation performance. Optimistic lookahead, however, is more problematic. Empirical results show that the overhead needed to support optimistic lookahead defeats the performance gains due to increased simultaneity.
UR - http://www.scopus.com/inward/record.url?scp=85031709039&partnerID=8YFLogxK
U2 - 10.1145/256563.256822
DO - 10.1145/256563.256822
M3 - Conference contribution
AN - SCOPUS:85031709039
T3 - Proceedings - Winter Simulation Conference
SP - 706
EP - 712
BT - Proceedings of the 25th Conference on Winter Simulation, WSC 1993
A2 - Biles, William E.
A2 - Evans, Gerald W.
A2 - Russell, Edward C.
A2 - Mollaghasemi, Mansooreh
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th Conference on Winter Simulation, WSC 1993
Y2 - 12 December 1993 through 15 December 1993
ER -