Update Qwen3.5 B200 FP4 SGLang recipe#264
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Signed-off-by: Faradawn Yang <73060648+faradawn@users.noreply.github.com>
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Update the Qwen3.5 B200 FP4 SGLang recipe to match the latest validated benchmark — switch B200 FP4 to tp=2 mem=0.8, drop --fp4-gemm-backend and --max-running-requests, add --enable-symm-mem and --mamba-ssm-dtype bfloat16, lower prefill/chunked sizes to 16384, and bump --stream-interval to 50. Based on SemiAnalysisAI/InferenceX#1018.