Add H20-3e fused MoE kernel tuning configs for Qwen3-Coder-480B-A35B-Instruct

[Xu-Wenqing]

Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.

Purpose

Add H20-3e fused MoE kernel tuning configs for Qwen3-Coder-480B-A35B-Instruct

Test Plan

python3.12 -m sglang.bench_serving --tokenizer /Models/qwen/Qwen3-Coder-480B-A35B-Instruct --base-url $ENDPOINT --backend vllm --dataset-name random --random-input 4096 --random-output 1024 --max-concurrency 10 --num-prompt 100

Test Result

Result (without Moe config):

============ Serving Benchmark Result ============
Backend:                                 vllm      
Traffic request rate:                    inf       
Max request concurrency:                 10        
Successful requests:                     100       
Benchmark duration (s):                  167.76    
Total input tokens:                      209281    
Total generated tokens:                  52135     
Total generated tokens (retokenized):    50573     
Request throughput (req/s):              0.60      
Input token throughput (tok/s):          1247.50   
Output token throughput (tok/s):         310.77    
Total token throughput (tok/s):          1558.27   
Concurrency:                             9.63      
----------------End-to-End Latency----------------
Mean E2E Latency (ms):                   16157.84  
Median E2E Latency (ms):                 16501.66  
---------------Time to First Token----------------
Mean TTFT (ms):                          503.36    
Median TTFT (ms):                        390.19    
P99 TTFT (ms):                           2178.79   
---------------Inter-Token Latency----------------
Mean ITL (ms):                           30.29     
Median ITL (ms):                         27.32     
P95 ITL (ms):                            32.46     
P99 ITL (ms):                            163.05    
Max ITL (ms):                            719.39    
==================================================

Result (with Moe config):

============ Serving Benchmark Result ============
Backend:                                 vllm      
Traffic request rate:                    inf       
Max request concurrency:                 10        
Successful requests:                     100       
Benchmark duration (s):                  154.16    
Total input tokens:                      209281    
Total generated tokens:                  52135     
Total generated tokens (retokenized):    50487     
Request throughput (req/s):              0.65      
Input token throughput (tok/s):          1357.52   
Output token throughput (tok/s):         338.18    
Total token throughput (tok/s):          1695.69   
Concurrency:                             9.62      
----------------End-to-End Latency----------------
Mean E2E Latency (ms):                   14834.48  
Median E2E Latency (ms):                 15468.98  
---------------Time to First Token----------------
Mean TTFT (ms):                          551.99    
Median TTFT (ms):                        391.19    
P99 TTFT (ms):                           2423.88   
---------------Inter-Token Latency----------------
Mean ITL (ms):                           27.67     
Median ITL (ms):                         23.42     
P95 ITL (ms):                            96.16     
P99 ITL (ms):                            184.47    
Max ITL (ms):                            913.22    
==================================================

(Optional) Documentation Update

[gemini-code-assist]

Code Review

This pull request adds a new configuration file with tuned parameters for the fused MoE kernel on NVIDIA H20-3e GPUs for the Qwen3-Coder-480B-A35B-Instruct model. The change is straightforward and the provided benchmark results demonstrate a clear performance improvement. The new configuration file is well-structured and follows the existing format. I don't see any issues with this change. Great work!

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