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Any chance we might see Vulkan extensions to close this performance gap? Was really hoping Intel and AMD would team up to vreate an open standard that we could

• adrian_b 2y ago
  I think that it is very unlikely that the performance difference is caused by anything that could be solved with a Vulkan extension. Vulkan only exposes the raw compute capabilities of the hardware and any well optimized Vulkan application can reach the full performance, but you need to write such optimized code. On the other hand, ROCm, like CUDA, includes optimized libraries for certain applications, like rocBLAS. It is likely that here the ROCm backend uses optimized library functions, perhaps from rocBLAS, while the Vulkan backend might use some generic functions for linear algebra, which are not optimized for the AMD GPUs.