Add checking for address of gradients when release_grad is enabled. #64460
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PR Category
Distributed Strategy
PR Types
Improvements
Description
Pcard-70444
release_grad功能会在优化器执行完毕后释放梯度的显存占用，以达到减少显存峰值的目的。当Tensor Fusion等优化同时开启时，会在梯度累加的第0步重新Fuse梯度，要求后续
acc_steps - 1步梯度地址保持不变。该PR加上对应的梯度地址检查逻辑，保证#63433 修复的问题可以报错。