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[Refactor] MLP weight prefetch to consistency with MoE Model's prefetching in terms of code and usage (#6442)

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### What this PR does / why we need it?
Refactor MLP weight prefetch to consistency with MoE Model's prefetching
in terms of code and usage.
Environments VLLM_ASCEND_ENABLE_PREFETCH_MLP,
VLLM_ASCEND_MLP_DOWN_PREFETCH_SIZE and
VLLM_ASCEND_MLP_GATE_UP_PREFETCH_SIZE is removed, usage as following:

--additional-config '{"weight_prefetch_config": { "enabled": true,
"prefetch_ratio": {"mlp": { "gate_up": 1.0, "down": 1.0} }}}'

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.14.1
- vLLM main:
dc917cceb8

---------

Signed-off-by: leo-pony <nengjunma@outlook.com>
This commit is contained in:
Nengjun Ma
2026-02-04 09:08:18 +08:00
committed by GitHub
parent fa56abea9f
commit 78fad4e348
18 changed files with 250 additions and 171 deletions
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6
docs/source/user_guide/configuration/additional_config.md
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@@ -60,7 +60,7 @@ The details of each configuration option are as follows:
| Name | Type | Default | Description |
|------------------|------|-------------------------------------------------------------|------------------------------------|
| `enabled` | bool | `False` | Whether to enable weight prefetch. |
| `prefetch_ratio` | dict | `{"attn": {"qkv": 1.0, "o": 1.0}, "moe": {"gate_up": 0.8}}` | Prefetch ratio of each weight. |
| `prefetch_ratio` | dict | `{"attn": {"qkv": 1.0, "o": 1.0}, "moe": {"gate_up": 0.8}, "mlp": { "gate_up": 1.0, "down": 1.0}}` | Prefetch ratio of each weight. |
**finegrained_tp_config**
@@ -115,6 +115,10 @@ An example of additional configuration is as follows:
},
"moe": {
"gate_up": 0.8
},
"mlp": {
"gate_up": 1.0,
"down": 1.0
}
},
},