A Study on Mixed Precision Techniques for a {GPU-based} {SIP} Solver

This article presents the study and application of mixed precision techniques to accelerate a {GPU-based} implementation of the Strongly Implicit Procedure ({SIP)} to solve hepta-diagonal linear systems. In particular, two different options to incorporate mixed precision in the {GPU} implementation are discussed and one of them is implemented. The experimental evaluation of our proposal demonstrates that a runtime similar to a single precision implementation on {GPU} can be attained, but achieving a numerical accuracy comparable to double precision arithmetic.