[Cherry-pick] Optimize linspace to avoid GPU -> CPU copy. (#42750) #43746
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PR types
Performance optimization
PR changes
OPs
Describe
cherry-pick #42750。
QA反馈,#42750 优化后,solov2模型性能可提升6%,故cherry-pick到2.3。因#41096 将linspace python实现从
fluid.layers.tensor
挪到了paddle.tensor.creation
下,该pr不在release/2.3分支中,故将#42750 中python修改同步到fluid.layers.tensor.linspace
中。