3.4 KiB
3.4 KiB
GPT-NeoX
本文档介绍了如何使用昆仑芯XTRT-LLM在单节点多XPU上构建和运行GPT-NeoX 模型。
概述
XTRT-LLM GPT-NeoX 示例代码位于 examples/gptneox。 此文件夹中有以下几个主要文件:
支持的矩阵
- FP16
- INT8 Weight-Only
- Tensor Parallel
使用说明
1.从HuggingFace(HF) Transformers下载权重
# Weights & config
sh get_weights.sh
2. 构建XTRT引擎
XTRT-LLM从HF checkpoint构建XTRT引擎。如果未指定checkpoint目录,XTRT-LLM将使用伪权重构建引擎。
构建调用示例:
# Build a float16 engine using 2-way tensor parallelism and HF weights.
# Enable several XTRT-LLM plugins to increase runtime performance. It also helps with build time.
python3 build.py --dtype=float16 \
--log_level=verbose \
--use_gpt_attention_plugin float16 \
--use_gemm_plugin float16 \
--use_layernorm_plugin float16 \
--max_batch_size=16 \
--max_input_len=1024 \
--max_output_len=1024 \
--world_size=2 \
--output_dir=./downloads/gptneox_model/trt_engines/fp16/2-XPU/ \
--model_dir=./downloads/gptneox_model 2>&1 | tee build_tp2.log
# Build a engine using 2-way tensor parallelism and HF weights. Apply INT8 weight-only quantization.
# Enable several XTRT-LLM plugins to increase runtime performance. It also helps with build time.
python3 build.py --dtype=float16 \
--log_level=verbose \
--use_gpt_attention_plugin float16 \
--use_gemm_plugin float16 \
--use_layernorm_plugin float16 \
--max_batch_size=16 \
--max_input_len=1024 \
--max_output_len=1024 \
--world_size=2 \
--use_weight_only \
--output_dir=./downloads/gptneox_model/trt_engines/in8/2-XPU/ \
--model_dir=./downloads/gptneox_model 2>&1 | tee build_tp2.log
3. 运行
在运行示例之前,请确保设置环境变量:
export PYTORCH_NO_XPU_MEMORY_CACHING=0 # disable XPytorch cache XPU memory.
export XMLIR_D_XPU_L3_SIZE=0 # disable XPytorch use L3.
如果不使用昆仑芯R480-X8产品,请确保设置环境变量如下:
export BKCL_PCIE_RING=1
要使用build.py生成的引擎运行XTRT-LLM GPT-NeoX模型,请执行以下操作:
# For 2-way tensor parallelism, FP16
mpirun -n 2 --allow-run-as-root \
python3 run.py \
--max_output_len=50 \
--engine_dir=./downloads/gptneox_model/trt_engines/fp16/2-XPU/ \
--tokenizer_dir=./downloads/gptneox_model
# For 2-way tensor parallelism, INT8
mpirun -n 2 --allow-run-as-root \
python3 run.py \
--max_output_len=50 \
--engine_dir=./downloads/gptneox_model/trt_engines/in8/2-XPU/ \
--tokenizer_dir=./downloads/gptneox_model