ggml-org/llama.cpp b8239

on GitHub

vulkan: Fix data races in coopmat1 mul_mat(_id) (#20084)

• vulkan: Fix data races in coopmat1 mul_mat(_id)

Add barriers between coopmat store and regular loads. We sort of got away with
this because it was the same subgroup accessing the values, but it's still a
race and may not work.

• switch to subgroup control barriers