Cholesky decomposition using fused datapath synthesis

In this paper we present an implementation of a Cholesky decomposition core, with IEEE754 single precision arithmetic. The datapaths are generated using fused datapath synthesis, created with an experimental floating point compiler tool, capable of fitting hundreds of floating point operators into a single device. We present a scalable architecture for both real and complex matrixes, on which we will report results for up to 128x128 real matrices. The concepts of fused datapath synthesis for FPGA floating point designs will be reviewed, and the application to the Cholesky algorithm detailed. Experimental results will be given to show that the accuracy of this method is superior to those expected from a traditional IEEE754 core based design flow.