Implementation of an Explicit Time Domain Volume Integral Equation Solver on GPUs Using OpenACC

An implementation of an explicit time domain volume integral equation (TDVIE) solver fine-tuned for efficient execution on graphics processing units (GPUs) is described. The implementation makes use of the OpenACC application program interface (API), which is based on a collection of compiler directives, for the ease of code porting onto the GPU environment. The resulting (serial) implementation runs up to 50 times faster than the original (serial) implementation of the solver developed for the CPU environment.