Every time i run my code in colab with A100/L4 GPU/T4 GPU i am getting below error. Can someone help

OutOfMemoryError: CUDA out of memory. Tried to allocate 500.00 MiB. GPU 0 has a total capacity of 22.16 GiB of which 201.38 MiB is free. Process 26183 has 21.96 GiB memory in use. Of the allocated memory 21.77 GiB is allocated by PyTorch, and 9.19 MiB is reserved by PyTorch but unallocated. If reserved but unallocated memory is large try setting PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True to avoid fragmentation. See documentation for Memory Management (.html#environment-variables)