Vulkan-run-test: fix mmq_wg_denoms

[AMD-dwang]

There should be a copy-and-paste error here.
*mmq_wg_denoms should be used together with *warptile_mmq, instead of wg_denoms.

[0cc4m]

Yes, I copied this wrong. It didn't make a difference because wg_denoms == mmq_wg_denoms for non-coopmat2, but it should be fixed. I'll run a test later, but it should be fine.

[AMD-dwang]

Yes, I copied this wrong. It didn't make a difference because wg_denoms == mmq_wg_denoms for non-coopmat2, but it should be fixed. I'll run a test later, but it should be fine.

l_wg_denoms or l_mmq_wg_denoms may be modified. Please see https://github.com/AMD-dwang/llama.cpp/blob/vulkan-compMat/ggml/src/ggml-vulkan/ggml-vulkan.cpp#L1476-L1499

l_wg_denoms and l_warptile_mmq will mismatch once it is modified. I just hit this error, then the number of work group is insufficient.

[0cc4m]

You're right, I forgot about that logic. Not sure it's needed anymore, but the fix is definitely necessary.

[0cc4m]

Thank you for the fix, looks good.