[Enhance] add retain_graph/create_graph options for jacobian and hessian #600
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…ssary GPU mem when derivatives involved in predicting progress
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plusNew001
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huohuohuohuohuo123
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Aug 12, 2024
…ssary GPU mem when derivatives involved in predicting progress (PaddlePaddle#600)
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PR types
Function optimization
PR changes
APIs
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ppsci.autodiff.jacobian/hessian添加retain_graph/create_graph两个选项，可将create_graph设置为False以显著减少推理含有微分操作场景下的显存占用（推理时不需要进行梯度反传，因此 grad 操作不需要创建反向图，从而减少不必要的变量创建）。