缓存不够！！！！并非内存容量不够错误提示：torch.cuda.0utofMemoryError:CUDAoutofmemory.Triedtoallocate2.00MiB(PU0;23.69GiBtotalcapacity;237BiBalreadyallocated;18.38MiBfre;2.50GiBreservedintotalbyPyTorch)Ifreservedmemoryis>>allocatedmemorytrysettingmax_split_size_mbtoavoidfragmentation.SeedocumentationforMemoryManagementa