The work by Valve's Timur Kristóf on improving old AMD GPUs on Linux

Valve's Timur Kristóf presented work on improving old AMD GPUs on Linux at the XDC 2026 conference. The presentation focused on optimizing the AMDGPU kernel driver for improved performance on older GPUs. Timur Kristóf, a member of the Valve team, discussed the optimization techniques used to improve performance on these GPUs. The optimizations were targeted at the Radeon R600 series and the older R600-based GPUs. The goal was to improve the performance of these GPUs by reducing the number of CPU cycles required for certain operations. The optimizations were done by reducing the number of kernel context switches and improving the cache usage. The presentation also discussed the use of a new kernel driver model, which allows for more efficient memory management. The new driver model is called the 'kfd' driver model, and it is designed to improve the performance of older GPUs by reducing the number of context switches and improving cache usage.