News: 0001551456

  ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

Mesa's Rusticl Lands OpenCL FP16 Half-Float Support

([Mesa] 4 Hours Ago Rusticl FP16)


Mesa's modern Rust-written OpenCL driver for Gallium3D "Rusticl" has closed one of the few remaining gaps with the former Clover OpenCL state tracker. Merged today for Mesa 25.2 is native FP16 support.

Rusticl merged cl_khr_fp16 support for native FP16 half-float support within this OpenCL implementation. The OpenCL FP16 support has been successfully tested so far with the Asahi (Apple Silicon), Freedreno (Qualcomm Adreno), LLVMpipe, Panfrost (Arm Mali), RadeonSI (Radeon), and Zink (OpenGL on Vulkan) drivers.

Karol Herbst of Red Hat opened [1]this merge request two months ago for OpenCL FP16 support with Rusticl to close that feature gap with the old Clover code. Today it's merged and ready to go with next quarter's Mesa 25.2 release.



[1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34053


nuetzel

...Another writer again agreed with all my generalities, but said that as an
inveterate skeptic I have closed my mind to the truth. Most notably I have
ignored the evidence for an Earth that is six thousand years old. Well, I
haven't ignored it; I considered the purported evidence and *then* rejected it.
There is a difference, and this is a difference, we might say, between
prejudice and postjudice. Prejudice is making a judgment before you have
looked at the facts. Postjudice is making a judgment afterwards. Prejudice
is terrible, in the sense that you commit injustices and you make serious
mistakes. Postjudice is not terrible. You can't be perfect of course; you
may make mistakes also. But it is permissible to make a judgment after you
have examined the evidence. In some circles it is even encouraged.
-- Carl Sagan, The Burden of Skepticism, Skeptical Enquirer,
Vol. 12, pg. 46