【Optim】Optimize the ReplicatedLinear(self.gate) using environment variables

[lizexu123]

Motivation

"Setting export FD_MOE_GATE_WEIGHT_DTYPE=BFLOAT16 yields acceleration effects in both prefill and decode phases."

"Setting FD_MOE_GATE_WEIGHT_DTYPE is to align performance with competitors, by default it uses the same type as the weight type."

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Modifications

Usage or Command

Accuracy Tests

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
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• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
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[paddle-bot]

Thanks for your contribution!

[Wanglongzhi2001]

这个换成 bf16 后有测过 benchmark 对比精度是否有下降吗？

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

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  Coverage           ?   65.80%           
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  Files              ?      386           
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  Misses             ?    15058           
  Partials           ?     2481           

Flag	Coverage Δ
GPU	65.80% <100.00%> (?)

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[lizexu123]

这个换成 bf16 后有测过 benchmark 对比精度是否有下降吗？

文心模型没换，glm这个模型之前写的是错误的，改成bf16才是对的。