HR: 1330h
AN: GP13B-01    [Abstracts]
TI: Ensemble Numerical Dynamo Simulation on Independent clusters
AU: * Jiang, W
EM: jiang@bowie.gsfc.nasa.gov
AF: JCET, University of Maryland, Baltimore County, 1000 Hilltop Rd, Baltimore, MD 21250 United States
AU: Kuang, W
EM: kuang@bowie.gsfc.nasa.gov
AF: Space Geodesy Branch, Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Odubiyi, J
EM: jodubiyi@cs.bowiestate.edu
AF: Dept. of Computer Science, Bowie State University, Bowie, MD 20715 United States
AU: Zhou, S
EM: szhou@pop900.gsfc.nasa.gov
AF: Northrop Grumman IT/TASC, Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Dong, L
EM: dliu@bowie.gsfc.naas.gov
AF: JCET, University of Maryland, Baltimore County, 1000 Hilltop Rd, Baltimore, MD 21250 United States
AU: Tangborn, A
EM: tangborn@gmao.gsfc.nasa.gov
AF: JCET, University of Maryland, Baltimore County, 1000 Hilltop Rd, Baltimore, MD 21250 United States
AB: Geodynamo simulation is very expensive computationally, a single numerical test could require several days of computing time on a mid-level PC clusters. More computing resource is required if higher resolutions are used in numerical modeling. In geomagnetic data assimilation, an ensemble of such tests is needed for our studies, thus is difficult to be managed by a single computing facility currently available at our disposal. In NASA GSFC, we have developed a paralleled model to simulate the geodynamo. We utilize very fast network and some available middlewares (e.g. Globus kit, XCAM) to allocate available but often heterogeneous resources for our model. The model can run with specific parameters independently on different clusters, ideal for the ensemble simulation. Our system has been tested successfully on a single cluster where the nodes have been configured to represent two independent systems. We are testing and improving our system with a PC cluster and a Mac cluster on different campus, aiming at managing modeling processes on heterogeneous environment.
DE: 1507 Core processes (8115)
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2005 Joint Assembly