在CentOS系统上进行PyTorch性能测试,通常涉及以下几个步骤:
环境配置:
sudo yum update -y
wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
bash Miniconda3-latest-Linux-x86_64.sh
conda create -n torch_env python=3.8
conda activate torch_env
安装PyTorch:
conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch -c conda-forge
import torch
print(torch.__version__)
print(torch.cuda.is_available())
性能测试:
使用PyTorch Profiler: PyTorch提供了Profiler API,用于分析模型的性能瓶颈。以下是一个简单的示例:
import torch
import torchvision.models as models
from torch.profiler import profile, record_function, ProfilerActivity
model = models.resnet18()
inputs = torch.randn(5, 3, 224, 224)
with profile(activities=[ProfilerActivity.CPU], record_shapes=True) as prof:
with record_function("model_inference"):
model(inputs)
print(prof.key_averages().table(sort_by="cpu_time_total", row_limit=10))
使用TensorBoard插件: 可以结合TensorBoard来可视化分析结果:
from torch.utils.tensorboard import SummaryWriter
writer = SummaryWriter('runs/experiment-1')
writer.add_graph(model, inputs)
writer.close()
优化建议:
通过这些步骤和方法,可以在CentOS系统上有效地进行PyTorch性能测试和优化。