Run Time error : CUDA out of memory

[Yogeshvasu]

I was training the model using Pytorch -GPU but it was throwing error

"RuntimeError: CUDA out of memory. Tried to allocate 64.00 MiB (GPU 0; 5.00 GiB total capacity; 3.73 GiB already allocated; 0 bytes free; 3.79 GiB reserved in total by PyTorch)"

I have tried all possible ways by reducing batch size.
may i know any other possible to clear this run time error