Abstract
The exploding complexity and computation efficiency requirements of applications are stimulating a strong demand for hardware acceleration with heterogeneous platforms such as FPGAs. However, a high-quality FPGA design is very hard to create as it requires FPGA expertise and a long design iteration time. In contrast, software applications are typically developed in a short development cycle, in high-level languages like Python, which is at a much higher level of abstraction than all existing hardware design flows. To close this gap between hardware design flows and software applications, and simplify FPGA programming, we create PyLog, a high-level, algorithm-centric Python-based programming and synthesis flow for FPGA. PyLog is powered by a set of compiler optimization passes and a type inference system to generate high-quality design. It abstracts away the implementation details and allows designers to focus on algorithm specification. PyLog captures more high-level computation patterns for better optimization than traditional HLS systems. PyLog also has a runtime for running PyLog code directly on FPGA platform without any extra code development. Evaluation shows that PyLog significantly improves FPGA design productivity and generates highly efficient FPGA designs that outperform highly optimized CPU and FPGA version by 3.17× and 1.24× on average.
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