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I'm not sure what the original post is referring to but many early GPUs were not fully IEEE FP32 compliant, where many operations (particularly trig functions i
by emcq 10y ago
I'm not sure what the original post is referring to but many early GPUs were not fully IEEE FP32 compliant, where many operations (particularly trig functions if I recall) would have 24 or fewer bits, either not supporting FP32 or requiring many cycles to compute. This article seems to describe some of the Radeon cards: https://en.m.wikipedia.org/wiki/Minifloat https://en.m.wikipedia.org/wiki/Minifloat
- makomk 10y agoThe Radeon cards mentioned in that article are really old ones that predate modern unified shader architectures, DirectX 10, and compute support. As far as I know all non-mobile-phone GPUs released in the last decade or so support FP32 precision, though not necessarily with full IEEE compliance.