vFPIO: A Virtual I/O Abstraction for FPGA-accelerated I/O Devices
summary
vFPIO implements a virtual I/O module compiled into user logic, a vFPIO shell with a preemptive I/O transaction scheduler, and a host library with POSIX-like file APIs to rewire I/O paths at runtime. Prototype runs on x86 servers with AMD Xilinx Alveo U280 cards and supports PCIe, DRAM, HBM, and network. Measured overhead is low (~7% local, ~1.1% RDMA), reconfiguration is 20,000× faster, and priority scheduling boosts high-priority throughput by ~2×.
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chapters (10)
- 0:00vFPIO introduction
- 3:58FPGA shell challenges
- 7:11Design goals
- 9:58Portability via IO reconfiguration
- 11:21Performance isolation
- 13:10vFPIO workflow
- 14:35Evaluation results
- 15:58Device switching overhead
- 17:24Performance isolation benefits
- 18:27Conclusion
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