Hierarchical and scalable bus architecture generation on FPGAs with high-level synthesis

This thesis presents and evaluates a bus-based system for FCUDA, a translation tool enabling CUDA code to be run on FPGAs. With the goal of constructing a solid light-weight back-end with optimized performance, we choose AXI4 as the communication protocol and plug in all necessary components on a hierarchical bus system. Then, FCUDA cores are added in the back-end and the comprehensive system is automated into a single tool chain. Several optimizations are added in this automated FCUDA bus system for the delivery of better performance. For example, FCUDA cores are tiled into clusters based on configuration inputs, and clock domains are separated to reduce long wires. For the experiments, this work adjusts the existing resources and period models and enhances the system latency model by incorporating off-chip memory communication latency. The system is proved to be light-weight based on post-routing resource reports. Design space exploration among multilevel granularity parallelisms is performed to get the system's best performance, with which a comparison with GPU is made. Our system can achieve at most 2.08 performance improvement when compared with the execution latency on GPU.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Chen, Ying

• FCUDA
• Advanced eXtensible Interface (AXI)
• BUS
• High-Level Synthesis
• Compute Unified Device Architecture (CUDA)

Statement dc:rights

• Copyright 2015 Ying Chen

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/78686

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/78686