why GeminiPlugin zero3+offloading cannot training a 7B model

[SeekPoint]

I got resource with 1T cpu mem and 4 2080ti22GB cards

I try zero3+offloading like

•    plugin = GeminiPlugin(precision=args.mixed_precision, 
  

•                          initial_scale=2**16, 
  

•                          shard_param_frac = 1,
  

•                          offload_optim_frac = 1,
  

•                          offload_param_frac =1,
  

•                          tp_size =4,
  

•                          max_norm=args.grad_clip
  

with a 7B model Llama2-Chinese-7b-Chat-ms
but it report GPU OOM