RISC-V Lichee Pi 4A vs. VisionFive 2 vs. HiFive Unmatched vs. Raspberry Pi 4B

• riscv-gnu-toolchain

  11 6 0.0 C

  GNU toolchain for RISC-V, including GCC (by brucehoult)

I've also found the 1.5 GHz in-order VF2 does remarkably well vs the 1.85 GHz OoO LPi4A on software build tasks, though not as extreme as Richard shows.

I'm lazy and using the original Image-55 on my 8 GB VF2, and the Debian that came preloaded in the eMMC on the LPi4A. My mass-production LPi4A arrived yesterday, I haven't tried it yet, tests are on the beta board that arrived a couple of months ago.

On pure CPU core + L1 cache tests (e.g. https://hoult.org/primes.txt) the LPi4A is considerably faster.

The LPi4A is also much faster on memcpy tests.

https://hoult.org/TH1520_memcpy.txt

https://hoult.org/JH7110_memcpy.txt

My build test is an RVV 0.7.1-enabled snapshot of the gnu toolchain (gcc 9.2) that I use on the TH1520 and SG2042. Newlib, non-multilib (just rv64gcv) build. I used the same Samsung 2 TB external USB3 SSD drive for src/build trees on both boards. https://github.com/brucehoult/riscv-gnu-toolchain

VF2:

real 107m52.116s

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