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Add support for extended exp operation as halide_extended_exp. #8206

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@zvookin zvookin commented Apr 24, 2024

Per discussion, add operator to implement efficient two pass softmax algorithm. This is a draft as it is hoped the numerics can be improved.

@zvookin zvookin requested a review from abadams April 24, 2024 06:57
* "The Two-Pass Softmax Algorithm" by Marat Dukhan and
* Artsiom Ablavatski [https://arxiv.org/abs/2001.04438].
*
* The first element of the returned Tuple is a psuedo-mantissa while
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pseudo

* Artsiom Ablavatski [https://arxiv.org/abs/2001.04438].
*
* The first element of the returned Tuple is a psuedo-mantissa while
* the second is an exponent which is an integer. The product of the
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So is the returned Tuple a pair of (float32, int32), or is it (float32, float32) where the second is always an integral value?

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Per discussion, add operator to implement efficient two pass softmax algorithm. This is a draft as it is hoped the numerics can be improved.

Can you clarify a bit? It's not obvious to me what the deficiencies are (just curious)

Zalman Stern added 2 commits April 30, 2024 22:43
values for exponent part of extended exp.

Improve test by comparing to three pass algorithm.
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What's the status on this PR?

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Any updates on this? Should someone else take this over?

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2 participants