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This guide describes the best practice data for Qwen3-30B-A3B on the Ascend NPU.

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Low Latency

ModelHardwareCardsDeploy ModeDatasetTPOTQuantizationConfiguration
Qwen3-30B-A3BAtlas 800I A31PD Mixed3.5K+1.5K10msW8A8 INT8Optimal Configuration
Qwen3-30B-A3BAtlas 800I A31PD Mixed6K+1.5K10.25msW8A8 INT8Optimal Configuration

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High Throughput

ModelHardwareCardsDeploy ModeDatasetTPOTQuantizationConfiguration
Qwen3-30B-A3BAtlas 800I A31PD Mixed1K+10010000msBF16Optimal Configuration
Qwen3-30B-A3BAtlas 800I A31PD Mixed3.5K+1.5K50msW8A8 INT8Optimal Configuration

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Optimal Configuration

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Qwen3-30B-A3B BF16 1P IN1K OUT100

Model: Qwen3-30B-A3B Hardware: Atlas 800I A3 Cards: 1 Deploy Mode: PD Mixed Quantization: BF16 Dataset: 1K+100 TPOT: 10000ms

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Model Deployment

Command
# ============================================================
# Before running, update the following variables:
#   MODEL_PATH: path to the model weights directory
#   DRAFT_MODEL_PATH: path to the draft model weights directory
#   HCCL_SOCKET_IFNAME: network interface name for HCCL
#   GLOO_SOCKET_IFNAME: network interface name for Gloo
# ============================================================

MODEL_PATH=/path/to/model-weights
DRAFT_MODEL_PATH=/path/to/draft-model-weights

echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
sysctl -w vm.swappiness=0
sysctl -w kernel.numa_balancing=0
sysctl -w kernel.sched_migration_cost_ns=50000

unset https_proxy
unset http_proxy
unset HTTPS_PROXY
unset HTTP_PROXY
unset ASCEND_LAUNCH_BLOCKING

source /usr/local/Ascend/ascend-toolkit/set_env.sh
source /usr/local/Ascend/nnal/atb/set_env.sh

export ASCEND_LAUNCH_BLOCKING=0
export DP_ROUND_ROBIN=1
export GLOO_SOCKET_IFNAME=<network-interface>
export HCCL_ALGO=level0:NA;level1:ring
export HCCL_SOCKET_IFNAME=<network-interface>
export INF_NAN_MODE_FORCE_DISABLE=1
export PYTORCH_NPU_ALLOC_CONF=expandable_segments:False
export SGLANG_ALLOW_OVERWRITE_LONGER_CONTEXT_LEN=1
export SGLANG_ENABLE_OVERLAP_PLAN_STREAM=1
export SGLANG_ENABLE_SPEC_V2=1
export SGLANG_PREFILL_DELAYER_MAX_DELAY_PASSES=200
export SGLANG_SCHEDULER_DECREASE_PREFILL_IDLE=1
export SGLANG_USE_MAX_DP_ATT=1
export STREAMS_PER_DEVICE=32

python3 -m sglang.launch_server \
    --model-path $MODEL_PATH \
    --host 127.0.0.1 --port 6688 \
    --trust-remote-code \
    --nnodes 1 \
    --node-rank 0 \
    --attention-backend ascend \
    --device npu \
    --max-running-requests 168 \
    --disable-radix-cache \
    --chunked-prefill-size -1 \
    --max-prefill-tokens 8300 \
    --speculative-draft-model-quantization unquant \
    --speculative-algorithm EAGLE3 \
    --speculative-draft-model-path $DRAFT_MODEL_PATH \
    --speculative-num-steps 7 \
    --speculative-eagle-topk 1 \
    --speculative-num-draft-tokens 8 \
    --tp-size 2 \
    --enable-dp-attention \
    --dp-size 2 \
    --mem-fraction-static 0.85 \
    --cuda-graph-bs 1 2 4 8 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 \
    --dtype bfloat16

​
Benchmark

We tested it based on the RANDOM dataset.
Command
python -m sglang.bench_serving \
    --dataset-name random \
    --backend sglang \
    --host 127.0.0.1 \
    --port 6688 \
    --max-concurrency 162 \
    --random-input-len 1000 \
    --random-output-len 100 \
    --num-prompts 624 \
    --random-range-ratio 1

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Qwen3-30B-A3B W8A8 1P IN3K5 OUT1K5 10ms

Model: Qwen3-30B-A3B Hardware: Atlas 800I A3 Cards: 1 Deploy Mode: PD Mixed Quantization: W8A8 INT8 Dataset: 3.5K+1.5K TPOT: 10ms

​
Model Deployment

Command
# ============================================================
# Before running, update the following variables:
#   MODEL_PATH: path to the model weights directory
#   DRAFT_MODEL_PATH: path to the draft model weights directory
#   HCCL_SOCKET_IFNAME: network interface name for HCCL
#   GLOO_SOCKET_IFNAME: network interface name for Gloo
# ============================================================

MODEL_PATH=/path/to/model-weights
DRAFT_MODEL_PATH=/path/to/draft-model-weights

echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
sysctl -w vm.swappiness=0
sysctl -w kernel.numa_balancing=0
sysctl -w kernel.sched_migration_cost_ns=50000

unset https_proxy
unset http_proxy
unset HTTPS_PROXY
unset HTTP_PROXY
unset ASCEND_LAUNCH_BLOCKING

source /usr/local/Ascend/ascend-toolkit/set_env.sh
source /usr/local/Ascend/nnal/atb/set_env.sh

export ASCEND_LAUNCH_BLOCKING=0
export GLOO_SOCKET_IFNAME=<network-interface>
export HCCL_BUFFSIZE=400
export HCCL_OP_EXPANSION_MODE=AIV
export HCCL_SOCKET_IFNAME=<network-interface>
export PYTORCH_NPU_ALLOC_CONF=expandable_segments:True
export SGLANG_DISAGGREGATION_BOOTSTRAP_TIMEOUT=600
export SGLANG_ENABLE_OVERLAP_PLAN_STREAM=1
export SGLANG_ENABLE_SPEC_V2=1
export SGLANG_PREFILL_DELAYER_MAX_DELAY_PASSES=200
export SGLANG_SCHEDULER_DECREASE_PREFILL_IDLE=1

python3 -m sglang.launch_server \
    --model-path $MODEL_PATH \
    --host 127.0.0.1 --port 6688 \
    --trust-remote-code \
    --nnodes 1 \
    --node-rank 0 \
    --attention-backend ascend \
    --device npu \
    --quantization modelslim \
    --max-running-requests 162 \
    --disable-radix-cache \
    --speculative-draft-model-quantization unquant \
    --chunked-prefill-size -1 \
    --max-prefill-tokens 35000 \
    --speculative-algorithm EAGLE3 \
    --speculative-draft-model-path $DRAFT_MODEL_PATH \
    --speculative-num-steps 3 \
    --speculative-eagle-topk 1 \
    --speculative-num-draft-tokens 4 \
    --tp-size 2 \
    --mem-fraction-static 0.87 \
    --cuda-graph-bs 1 5 15 40 70 100 120 130 140 146 150 154 156 158 160 162 \
    --dtype bfloat16

​
Benchmark

We tested it based on the RANDOM dataset.
Command
python -m sglang.bench_serving \
    --dataset-name random \
    --backend sglang \
    --host 127.0.0.1 \
    --port 6688 \
    --max-concurrency 1 \
    --random-input-len 3500 \
    --random-output-len 1500 \
    --num-prompts 1 \
    --random-range-ratio 1

​
Qwen3-30B-A3B W8A8 1P IN3K5 OUT1K5 50ms

Model: Qwen3-30B-A3B Hardware: Atlas 800I A3 Cards: 1 Deploy Mode: PD Mixed Quantization: W8A8 INT8 Dataset: 3.5K+1.5K TPOT: 50ms

​
Model Deployment

Command
# ============================================================
# Before running, update the following variables:
#   MODEL_PATH: path to the model weights directory
#   DRAFT_MODEL_PATH: path to the draft model weights directory
#   HCCL_SOCKET_IFNAME: network interface name for HCCL
#   GLOO_SOCKET_IFNAME: network interface name for Gloo
# ============================================================

MODEL_PATH=/path/to/model-weights
DRAFT_MODEL_PATH=/path/to/draft-model-weights

echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
sysctl -w vm.swappiness=0
sysctl -w kernel.numa_balancing=0
sysctl -w kernel.sched_migration_cost_ns=50000

unset https_proxy
unset http_proxy
unset HTTPS_PROXY
unset HTTP_PROXY
unset ASCEND_LAUNCH_BLOCKING

source /usr/local/Ascend/ascend-toolkit/set_env.sh
source /usr/local/Ascend/nnal/atb/set_env.sh

export ASCEND_LAUNCH_BLOCKING=0
export GLOO_SOCKET_IFNAME=<network-interface>
export HCCL_BUFFSIZE=400
export HCCL_OP_EXPANSION_MODE=AIV
export HCCL_SOCKET_IFNAME=<network-interface>
export PYTORCH_NPU_ALLOC_CONF=expandable_segments:True
export SGLANG_DISAGGREGATION_BOOTSTRAP_TIMEOUT=600
export SGLANG_ENABLE_OVERLAP_PLAN_STREAM=1
export SGLANG_ENABLE_SPEC_V2=1
export SGLANG_PREFILL_DELAYER_MAX_DELAY_PASSES=200
export SGLANG_SCHEDULER_DECREASE_PREFILL_IDLE=1

python3 -m sglang.launch_server \
    --model-path $MODEL_PATH \
    --host 127.0.0.1 --port 6688 \
    --trust-remote-code \
    --nnodes 1 \
    --node-rank 0 \
    --attention-backend ascend \
    --device npu \
    --quantization modelslim \
    --max-running-requests 162 \
    --disable-radix-cache \
    --speculative-draft-model-quantization unquant \
    --chunked-prefill-size -1 \
    --max-prefill-tokens 35000 \
    --speculative-algorithm EAGLE3 \
    --speculative-draft-model-path $DRAFT_MODEL_PATH \
    --speculative-num-steps 3 \
    --speculative-eagle-topk 1 \
    --speculative-num-draft-tokens 4 \
    --tp-size 2 \
    --mem-fraction-static 0.87 \
    --cuda-graph-bs 1 5 15 40 70 100 120 130 140 146 150 154 156 158 160 162 \
    --dtype bfloat16

​
Benchmark

We tested it based on the RANDOM dataset.
Command
python -m sglang.bench_serving \
    --dataset-name random \
    --backend sglang \
    --host 127.0.0.1 \
    --port 6688 \
    --max-concurrency 160 \
    --random-input-len 3500 \
    --random-output-len 1500 \
    --num-prompts 640 \
    --random-range-ratio 1

​
Qwen3-30B-A3B W8A8 1P IN6K OUT1K5 BS16

Model: Qwen3-30B-A3B Hardware: Atlas 800I A3 Cards: 1 Deploy Mode: PD Mixed Quantization: W8A8 INT8 Dataset: 6K+1.5K TPOT: 10.25ms

​
Model Deployment

Command
# ============================================================
# Before running, update the following variables:
#   MODEL_PATH: path to the model weights directory
#   DRAFT_MODEL_PATH: path to the draft model weights directory
#   HCCL_SOCKET_IFNAME: network interface name for HCCL
#   GLOO_SOCKET_IFNAME: network interface name for Gloo
# ============================================================

MODEL_PATH=/path/to/model-weights
DRAFT_MODEL_PATH=/path/to/draft-model-weights

echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
sysctl -w vm.swappiness=0
sysctl -w kernel.numa_balancing=0
sysctl -w kernel.sched_migration_cost_ns=50000

unset https_proxy
unset http_proxy
unset HTTPS_PROXY
unset HTTP_PROXY
unset ASCEND_LAUNCH_BLOCKING

source /usr/local/Ascend/ascend-toolkit/set_env.sh
source /usr/local/Ascend/nnal/atb/set_env.sh

export GLOO_SOCKET_IFNAME=<network-interface>
export HCCL_BUFFSIZE=400
export HCCL_OP_EXPANSION_MODE=AIV
export HCCL_SOCKET_IFNAME=<network-interface>
export PYTORCH_NPU_ALLOC_CONF=expandable_segments:True
export SGLANG_DISAGGREGATION_BOOTSTRAP_TIMEOUT=600
export SGLANG_ENABLE_OVERLAP_PLAN_STREAM=1
export SGLANG_ENABLE_SPEC_V2=1
export SGLANG_SET_CPU_AFFINITY=1
export TRANSFORMERS_VERBOSITY=error

python3 -m sglang.launch_server \
    --model-path $MODEL_PATH \
    --host 127.0.0.1 --port 6688 \
    --trust-remote-code \
    --nnodes 1 \
    --node-rank 0 \
    --attention-backend ascend \
    --device npu \
    --quantization modelslim \
    --max-running-requests 16 \
    --disable-radix-cache \
    --speculative-draft-model-quantization unquant \
    --speculative-algorithm EAGLE3 \
    --speculative-draft-model-path $DRAFT_MODEL_PATH \
    --speculative-num-steps 4 \
    --speculative-eagle-topk 1 \
    --speculative-num-draft-tokens 5 \
    --chunked-prefill-size -1 \
    --max-prefill-tokens 35000 \
    --tp-size 2 \
    --mem-fraction-static 0.6 \
    --cuda-graph-bs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 \
    --dtype bfloat16

​
Benchmark

We tested it based on the RANDOM dataset.
Command
python -m sglang.bench_serving \
    --dataset-name random \
    --backend sglang \
    --host 127.0.0.1 \
    --port 6688 \
    --max-concurrency 16 \
    --random-input-len 6144 \
    --random-output-len 1500 \
    --num-prompts 16 \
    --random-range-ratio 1