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Update Qwen3.5 FP4 MI355X MTP recipe with tuned env/flags #1957

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Update Qwen3.5 FP4 MI355X MTP recipe with tuned env/flags #1957

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19 changes: 12 additions & 7 deletions benchmarks/single_node/fixed_seq_len/qwen3.5_fp4_mi355x_mtp.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -15,14 +15,17 @@ if [[ -n "$SLURM_JOB_ID" ]]; then
echo "JOB $SLURM_JOB_ID running on $SLURMD_NODENAME"
fi

hf download "$MODEL"
if [[ "$MODEL" != /* ]]; then hf download "$MODEL"; fi

export SGLANG_USE_AITER=1
export SGLANG_USE_AITER_UNIFIED_ATTN=1
export AITER_FLYDSL_FORCE=1
# AllReduce latency on TP=2: INT4 quick-reduce + single-stage AITER AllReduce.
export ROCM_QUICK_REDUCE_QUANTIZATION=INT4
export AITER_AR_1STAGE=1
# Built-in MTP head (NEXTN) runs on the ROCm-hardened spec-v1 chain path.
export SGLANG_ENABLE_SPEC_V2=0

SERVER_LOG=/workspace/server.log
MEM_FRAC_STATIC=${MEM_FRAC_STATIC:-0.8}
MEM_FRAC_STATIC=${MEM_FRAC_STATIC:-0.85}

if [ "${EVAL_ONLY}" = "true" ]; then
setup_eval_context
Expand All @@ -40,9 +43,11 @@ python3 -m sglang.launch_server --model-path=$MODEL --trust-remote-code \
--model-loader-extra-config '{"enable_multithread_load": true}' \
--watchdog-timeout 1200 \
--disable-radix-cache \
--enable-aiter-allreduce-fusion --max-running-requests $CONC \
--page-size 16 \
--speculative-algorithm EAGLE \
--enable-dp-attention \
--mamba-ssm-dtype bfloat16 \
--disable-shared-experts-fusion \
--max-running-requests $CONC \
--speculative-algorithm NEXTN \
--speculative-num-steps 3 \
--speculative-eagle-topk 1 \
--speculative-num-draft-tokens 4 \
Expand Down