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Test results for AMD Ryzen
- anonymfus 9y agoThe most practically interesting part: >FMA4 is not officially supported on Ryzen, but I found that the FMA4 instructions actually work correctly on Ryzen, even though the CPUID instruction says that FMA4 is not supported.
- wsxcde 9y agoWhich means there are rare bugs in the FMA4 they've not been able to iron out. So they decided to turn it off at release time using a chicken bit.
- distances 9y agoPreviously on HN: https://news.ycombinator.com/item?id=14245951 https://news.ycombinator.com/item?id=14245951