loss_scaler的原理就是为了避免梯度下溢,给他乘上一个较大的数,而在更新参数的时候,再把这个因子除掉。 原理 结合代码来看loss_scaler的具体原理。 不适用AMP(即opt_level="O0") from apex import amp model, optimizer = amp.initialize(model, optimizer, opt_level="O0") for data in dataloader: loss...
具体来说,loss_scaler函数是通过将损失函数的值乘以一个缩放因子来实现的。这个缩放因子通常是一个小数,例如0.1或0.01,它可以使损失函数的值变得更小,从而使梯度更容易处理。在计算梯度时,可以将缩放因子乘回去,以保持梯度的正确性。 使用loss_scaler函数可以帮助优化器更好地处理梯度,从而提高训练的速度和效果。然而...
loss_scaler 函数,它的作用本质上是 loss.backward(create_graph=create_graph) 和 optimizer.step()。 loss_scaler 继承 NativeScaler 这个类。这个类的实例在调用时需要传入 loss, optimizer, clip_grad, parameters, create_graph 等参数,在call() 函数的内部实现了 loss.backward(create_graph=create_graph) 功...
loss_scaler.py Pa**ul上传4KB文件格式py loss_scaler.py (0)踩踩(0) 所需:1积分 IMG_3534.CR2.cr2 2025-01-25 13:42:58 积分:1 Screenshot_20240601_123444.jpg 2025-01-25 13:27:10 积分:1 Screenshot_20240601_175211.jpg 2025-01-25 13:20:16...
nvidia apex Gradient overflow. Skipping step, loss scaler 0 reducing loss scale to 131072.0 https://blog.csdn.net/gzq0723/article/details/105885088 也有大佬说一开始梯度爆炸是正常的 https://zhuanlan.zhihu.com/p/79887894 混合精度计算(Mixed Precision),并介绍一款Nvidia开发的基于PyTorch的混合精度训练...
Facebook AI Research Sequence-to-Sequence Toolkit written in Python. - fairseq/fairseq/optim/dynamic_loss_scaler.py at a48f235636557b8d3bc4922a6fa90f3a0fa57955 · facebookresearch/fairseq
Gradient overflow. Skipping step, loss scaler 0 reducing loss scale to 0.00048828125 `#Params: 73.7M [57/350] Selected optimization level O1: Insert automatic casts around Pytorch functions and Tensor methods. Defaults for this optimization level are: ...
Significant influence of scaler tip design on root substance loss resulting from ultra- sonic scaling: a laserprofilometric in vitro study. J Clin Periodontol. 2004;31:1003‐1006.Significant influence of scaler tip design on root substance loss resulting from ultrasonic scaling: a laserprofilometric...
Auditory and Nonauditory Effects of Ultrasonic Scaler Use and Its Role in the Development of Permanent Hearing Loss 喜欢 0 阅读量: 32 作者:Chopra,Aditi,Thomas,Betsy,S.,Sivaraman,Karthik,Mohan,Kishan 摘要: Purpose: To evaluate the negative auditory and non 关键词:...
A new correction method of counting loss for G.M. counters has been developed using an anticoincidence gated scaler and a live timer, which makes direct reading of the corrected counting rate possible. The counting loss correction within an error of 2% was possible at corrected counting rates ...