Hello Murray, OpenCL is currently not exposed by the nv50 driver — the one used by your 9400 GT as well as the 9800 GT when using Nouveau. It is a work-in-progress though and I could give you some instructions on how to get it going, but bear in mind that you will need to build a custom version of Mesa and it is still failing some of the basic OpenCL-CTS tests.
OpenCL status can now be followed via mesamatrix.net, though you will need to scroll down past OpenGL and Vulkan to see it: https://mesamatrix.net/#OpenCL. As you can see there, nv50 is not listed as supported. Best, Pierre On 2021-07-30 — 17:43, Murray Van Luyn wrote: > Hi, > > Prolly not the most on-topic post, so I'll keep it brief. Couldn't seem to > find a move conversant crowd in other lines of enquiry. > > I posted a question concerning inability to access GPU hardware, after > installing mesa-opencl-icd on Ubuntu. > > https://askubuntu.com/questions/1354592/installing-mesa-opencl-for-nvidia > > I've exhausted all lines of investigation into the problem myself, and could > really use some professional help. > > Anyone, please? >
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