TY - GEN
T1 - CAP phase II simulations for the air force HEL-JTO project
T2 - Department of Defense High Performance Computing Modernization Program: HPCMP Users Group Conference 2005
AU - Werne, J.
AU - Lund, T.
AU - Fritts, D.
AU - Pettersson-Reif, B. A.
AU - Sullivan, P.
PY - 2005
Y1 - 2005
N2 - Shear turbulence induced by the Kelvin-Helmholtz (KH) instability in a stratified fluid is simulated in support of the Air Force High-Energy-Laser Joint Tactical Office (HEL-JTO) project using the new 3000-processor NAVO IBM Power 4+ system (Kraken). The results are used to 1) compare with and improve a dynamic LES method we have developed, and 2) provide the high-resolution simulation component of a new subgrid-scale (SGS) model we have developed for optical turbulence forecasting. We also discuss the relative performance of Kraken and the new 2000-processor Intel XEON EM64T cluster (Jvn) at ARL, pointing out differences which amount primarily to inter-node network performance. We suggest "%of wall time spent communicating" as a standard DoD benchmark criterion for very large distributed systems, as other more conventional criteria do not necessarily represent this important system and algorithm metric.
AB - Shear turbulence induced by the Kelvin-Helmholtz (KH) instability in a stratified fluid is simulated in support of the Air Force High-Energy-Laser Joint Tactical Office (HEL-JTO) project using the new 3000-processor NAVO IBM Power 4+ system (Kraken). The results are used to 1) compare with and improve a dynamic LES method we have developed, and 2) provide the high-resolution simulation component of a new subgrid-scale (SGS) model we have developed for optical turbulence forecasting. We also discuss the relative performance of Kraken and the new 2000-processor Intel XEON EM64T cluster (Jvn) at ARL, pointing out differences which amount primarily to inter-node network performance. We suggest "%of wall time spent communicating" as a standard DoD benchmark criterion for very large distributed systems, as other more conventional criteria do not necessarily represent this important system and algorithm metric.
UR - https://www.scopus.com/pages/publications/33947709405
U2 - 10.1109/DODUGC.2005.16
DO - 10.1109/DODUGC.2005.16
M3 - Conference contribution
AN - SCOPUS:33947709405
SN - 0769524966
SN - 9780769524962
T3 - Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005
SP - 100
EP - 111
BT - DoD High Performance Computing Modernization Program
Y2 - 27 June 2005 through 30 June 2005
ER -