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* [doc] update example link

* [doc] update example link

* [zero] add strict ddp mode for chunk init

* [gemini] update gpt example

* [zero] add strict ddp mode

* [polish] add comments for strict ddp mode

* [zero] fix test error

* [utils] lazy init.

* [utils] remove description.

* [utils] complete.

* [utils] finalize.

* [utils] fix names.

Co-authored-by: Ziyue Jiang <ziyue.jiang@gmail.com>

This reverts commit 7d5640b9.

[example] check dreambooth example gradient accmulation must be 1

* [fx] allow control of ckpt_codegen init

Currently in ColoGraphModule, ActivationCheckpointCodeGen will be set automatically in __init__. But other codegen can't be set if so. 
So I add an arg to control whether to set ActivationCheckpointCodeGen in __init__.

* code style

support full evoformer tracer, which is a main module of alphafold. previously we just support a simplifed version of it.
1. support some evoformer's op in fx
2. support evoformer test
3. add repos for test code

Co-authored-by: Ziyue Jiang <ziyue.jiang@gmail.com>