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vulkan: optimize coopmat2 q4_k/q5_k dequant functions. #11206

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Merged
merged 1 commit into from
Jan 16, 2025
Merged

vulkan: optimize coopmat2 q4_k/q5_k dequant functions. #11206

merged 1 commit into from
Jan 16, 2025

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jeffbolznv
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Do masking on whole dwords, fetch all scales at once.

pp512 results on RTX 4070:

before:
Phi-3-mini-4k-instruct-q4.gguf		4998.55
llama-3.2-3b-instruct-q5_k_m.gguf	5573.48

after:
Phi-3-mini-4k-instruct-q4.gguf		5322.34
llama-3.2-3b-instruct-q5_k_m.gguf	6082.11

@jeffbolznv
vulkan: optimize coopmat2 q4_k/q5_k dequant functions.
61e5d8d 
Do masking on whole dwords, fetch all scales at once.
@jeffbolznv jeffbolznv requested a review from 0cc4m January 12, 2025 20:00
@github-actions github-actions bot added Vulkan Issues specific to the Vulkan backend ggml changes relating to the ggml tensor library for machine learning labels Jan 12, 2025
0cc4m
0cc4m approved these changes Jan 16, 2025
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Looks good and I also see a decent improvement on RTX 3090.

@0cc4m 0cc4m merged commit 466300f into ggml-org:master Jan 16, 2025
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tinglou pushed a commit to tinglou/llama.cpp that referenced this pull request Feb 13, 2025
@jeffbolznv @tinglou
vulkan: optimize coopmat2 q4_k/q5_k dequant functions. (ggml-org#11206)
2f08dc0 
Do masking on whole dwords, fetch all scales at once.
arthw pushed a commit to arthw/llama.cpp that referenced this pull request Feb 26, 2025
@jeffbolznv @NeoZhangJianyu
vulkan: optimize coopmat2 q4_k/q5_k dequant functions. (ggml-org#11206)
28267b3 
Do masking on whole dwords, fetch all scales at once.
mglambda pushed a commit to mglambda/llama.cpp that referenced this pull request Mar 8, 2025
@jeffbolznv @mglambda
vulkan: optimize coopmat2 q4_k/q5_k dequant functions. (ggml-org#11206)
0326138 
Do masking on whole dwords, fetch all scales at once.
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@0cc4m 0cc4m 0cc4m approved these changes

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@jeffbolznv @0cc4m