[PIR] Throw error when OP has no grad OP

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PArallel Distributed Deep LEarning: Machine Learning Framework from Industrial Practice （『飞桨』核心框架，深度学习&机器学习高性能单机、分布式训练和跨平台部署）

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[PIR] Throw error when OP has no grad OP #63914

Closed SigureMo closed 1 week ago

SigureMo commented 1 week ago

PR Category

Execute Infrastructure

PR Types

Improvements

Description

在添加反向 OP 时，如果找不到 grad OP，应该直接报错，而不是报 warning

closes #63908

PCard-66972

paddle-bot[bot] commented 1 week ago

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