Out-of-core solver using GPU-accelerated cluster for MoM-based EM code

We outline an implementation of out-of-core direct solver for method of moments-based electromagnetic code. It is designed and executed on a computer cluster where each node has one or more graphical processing units. The algorithm employs simultaneously multi-node parallelism of a cluster architecture and multi-processor parallelism of graphical processing units. This accelerates the overall analysis and allows solving larger problems. The complexity of the solvable problems is limited only with computer resources of the cluster. We perform numerical experiments on a cluster with 8 nodes and with 2 graphical processing units per node. The achieved efficiency of multi-node solution is around 80%. As an illustration of the efficiency of the approach, the radiation pattern of a microstirp antenna on a helicopter fuselage, and monostatic radar cross section of a global hawk are provided, as well as the simulation times.