It doesn't work yet with Darktable 4 filmic_rgb kernel (but works with some others I tested). Rusticl on radeonsi is really promising, it already works with Darktable 3 (as far as I tested it) and with the Luxmark luxball scene.
The only viable option for r600 is fglrx on Ubuntu 14.04 (TeraScale 2 and 3), TeraScale 1 would require fglrx on Ubuntu 12.04.Ĭlover is in very bad shape, radeonsi support has broken -ffast-math, r600 support is now completely broken (both TeraScale 2 and 3 because of 2 different bugs), See my amd gpu related issues on LLVM side. Like ROCm, there are some bugs, for example the professional dual-GPU GCN1 FirePro S10000 doesn't work. So you may actually have to rely on an old Orca driver and avoid the latest one to get support. I haven't seen yet a card supported by newer Orca build. So maybe it only supports GCN4 (untested). I have verified it doesn't supports card that were supported by PAL, and I have verified GCN1 and GCN2 doesn't work anymore in recent Orca builds. It replaced (!!!) PAL as the “legacy” driver AND removed support for older cards and I don't know which card it supports. Named “legacy” in recent amdgpu package shipping it. I, for example, enabled OpenCL on some Vega card on some professional workstations by using PAL while ROCm didn't work (despite Vega is lucky to be one of the officially supported ROcm devices… ) AMD removed PAL without alternative. This is sometime the only option even with cards expected to be supported by ROCm. Discontinued by AMD and removed from their amdgpu-pro packages. If you cannot use ROCm, like you don't own one of the very few supported cards, or you are unlucky, or you don't have the right motherboard/graphics card combination (ROCm support for some cards requires some PCIe features not all computers have), or if it doesn't work anyway, or if you have an APU, here are the options: People waited for years to see Polaris debugged then they removed Polaris support it before fixing it. 
ROCm is the only option for Blender on AMD as they removed OpenCL support and now require HIP instead.ĬHIP-SPV (HIP platform with OpenCL backend) isn't ready yet, so for HIP, only ROCm is in the game.Īs an example my card (Hawaii) only got supported by ROCm for a couple of weeks years ago and since then if I run ROCm it wrecks the kernel and I get a message saying I have to reboot. They also quickly phase out products, so the support is like for some couple of years and then ROCm removes support for your card. It only supports a handful of discrete professional cards and with some luck, some others that share the same chip (I said, with luck).
ROCm, if you can use it, you're lucky.
What's currently the best OpenCL driver for AMD on Linux? ROCm, ROCr, Legacy ORCA or Rusticl ?
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