[Feature][OP] Append Attn Support CUDA-PDL #5072
Merged
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Motivation
Before enabling PDL, there is a bubble between two kernels.

After enabling PDL, there is almost no bubbles between kernels.

Modifications
FD_ENABLE_PDL, with a default value of1, which means CUDA-PDL is enabled whensm>=90.Usage or Command
export FD_ENABLE_PDL=0will disable CUDA-PDL.Accuracy Tests
Append Attn Support CUDA-PDL
Checklist
[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]]pre-commitbefore commit.releasebranch, make sure the PR has been submitted to thedevelopbranch, then cherry-pick it to thereleasebranch with the[Cherry-Pick]PR tag.