• barsoap
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    2 months ago

    5500 here. I can’t use any recent rocm version because the GFX override I use is for a card that apparently has a couple more instructions and the newer kernels instantly crash with an illegal operation exception.

    I found a build someone made buried in a docker image and it indeed does work, without override, for the 5500 but it’s using all generic code for the kernels and is like 4x slower than the ancient version.

    What’s ultimately the worst thing about this isn’t that AMD isn’t supporting all cards for rocm – it’s that the support is all or nothing. There’s no “we won’t be spending time on this but it passes automated tests so ship it” kind of thing. “oh the new kernels broke that old card tough luck you don’t get new kernels”.

    So in the meantime I’m living with the occasional (every couple of days?) freeze when using rocm because I can’t reasonably upgrade. Not just the driver crashes, the kernel tries to restart it, the whole card needs a reset before doing anything but display a vga console.

    • Russ@bitforged.space
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      2 months ago

      Yeah, I definitely am not a fan of how AMD handles rocm - there’s so many weird cases of “Well this card should work with rocm, but… [insert some weird quirk that you have to do, like the one I mentioned, or what you’ve run into]”.

      Userspace/consumer side I enjoy AMD, but I fully understand why a lot of devs don’t make use of rocm and why Nvidia has such a tight hold on things in the GPU compute world with CUDA.