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This, paper presents the FISH (FPGA-Initiated Software-Handled) framework which allows FPGA accelerators to make system calls to the Linux operating system in CPU-FPGA systems. A special FISH Linux kernel module running on the CPU provides a system call interface for FPGA accelerators, much like the ABI which exists for software programs. We provide a proof-of-concept implementation of this framework...
We describe new multi-ported cache designs suitable for use in FPGA-based processor/parallel-accelerator systems, and evaluate their impact on application performance and area. The baseline system comprises a MIPS soft processor and custom hardware accelerators with a shared memory architecture: on-FPGA L1 cache backed by off-chip DDR2 SDRAM. Within this general system model, we evaluate traditional...
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