你好，请问怎么启用 offload_optimizer

[youzihaha]

[zejunwang1]

将 deepspeed 的配置文件修改为：

{ "train_batch_size": "auto", "train_micro_batch_size_per_gpu": "auto", "gradient_accumulation_steps": "auto", "gradient_clipping": "auto", "fp16": { "enabled": "auto", "loss_scale": 0, "initial_scale_power": 16, "loss_scale_window": 1000, "hysteresis": 2, "min_loss_scale": 1 }, "bf16": { "enabled": "auto" }, "zero_optimization": { "stage": 3, "offload_optimizer": { "device": "cpu", "pin_memory": true }, "allgather_partitions": true, "allgather_bucket_size": 5e8, "overlap_comm": true, "reduce_scatter": true, "reduce_bucket_size": 5e8, "contiguous_gradients" : true, "stage3_gather_16bit_weights_on_model_save": true } }

[youzihaha]

好的，谢谢你