tensor parallel dataloder for deepspeed accelerator #3390
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This PR adds support for TP data loader&TP weights save in the DeepSpeed accelerator.
The related DeepSpeed APIs are already supported.
Currently, TP+DP training and validation (ZeRO-0 and ZeRO-1) for Llama have been successfully completed.
(deepspeedai/DeepSpeed#6922) @muellerzr
cc @sywangyi @delock
cc DeepSpeed Member: @tjruwase