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by brucehoult
887 days ago
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Core-specific cost models are a bad idea when you have a large variety of cores in use. Auto-vectorisation doesn't work well on anything, except in the most trivial cases, and none of the popular boards [1] yet have the official RISC-V vector ISA anyway -- that will change this year, hopefully. [1] there is now in the last month or two one (1) board with RVV 1.0 but it's only single core vs the quad core in popular boards, and also has only 512 MB of RAM vs 4 / 8 / 16 GB on the popular boards (and 128 GB on the Pioneer). |
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