深度学习组件Tensorflow调用GPU了吗-阿里云开发者社区

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开发者社区> 问答> 正文

深度学习组件Tensorflow调用GPU了吗

爱她之心

2017-06-23 09:43:15

1546

为何训练AlexNet模型的时候，选择了两片GPU执行的速度还没有我的PC上四核CPU运行效率高呢？需要特别指定GPU的指令吗？Tensorflow是如何加速卷积运算的？

机器学习/深度学习 TensorFlow 算法框架/工具异构计算

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傲海
2019-07-17 21:19:22

已采纳

可能是你的数据IO问题，建议看看https://tianchi.aliyun.com/competition/new_articleDetail.html?spm=5176.8366600.4851167.1.p3AVkR&from=user&raceId=&postsId=1562

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注浆机
2019-07-17 21:19:22

Alexnet 里面卷积比较多，如果用 GPU 训练的速度是比 CPU 快非常多。所以如果是速度慢，你可以选择增加 batch size，或者优化 IO 等方式。具体你得 proflie 一下瓶颈在哪里。

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