GitLab

* first

* fix causal mask

* disable flash attention2 on sm70

* fix 2

* update readme

* clang-format

* disable ft2 on windows

* fix lint

* fix build

* fix build

* fix long kv seq

* fix lint

* sync copy output

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Co-authored-by: grimoire <yaoqian@pjlab.org.cn>
Co-authored-by: irexyc <irexyc@gmail.com>