* update flash-attn v1
* restore: hdim224
* add 224 flash_fwd_template
* remove whitespace
* softcap is working, including test and api.
* make softcap test case better
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Co-authored-by: laurent <laurent.mazare@gmail.com>
* Expose the seqlen variable for flash-attn without padding.
* Fix the batched call.
* Adapt for the varlen variant.
* No need to set the batch strides when in varlen mode.
* Add a test (disabled at the moment).
* Get the test to work properly.
