I’ll be giving a talk in the RISC-V devroom at FOSDEM on Saturday 1st February, in which I’ll describe how we are analysing and improving the performance of the Ibex RISC-V CPU core. I’ll discuss how Verilator is used to simulate Ibex running CoreMark and Embench and how I’ve analysed these simulations to identify major sources of stalls. This is used to inform what improvements should be made. Yosys was used to analyse the impact on area and clock frequency from these changes. I’ll talk about how this analysis was performed and what was required to avoid adversely impacting clock frequency.
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We provide a home for multi-partner projects that deliver verified, high quality IP and tools, which provide the solid foundations that are necessary for the rapid development cycles required for next generation silicon products. lowRISC employs an engineering team in Cambridge, UK, working on our own developments, partner projects, and work-for-hire that is aligned with our mission.