[ET-VK] Add co-op algorithm for 4 bit weight only quantized linear #10204
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## Context As title. Add an alternative compute shader for int4 weight-only quantized linear that utilizes a co-operative algorithm. This shader is more performant than standard tiled algorithms for `gemv` cases, i.e. when `mat1` is a vector rather than a matrix. ## Changes * Add the cooperative shader * Use the cooperative shader when the height of `mat1` is 1 Differential Revision: [D73044650](https://our.internmc.facebook.com/intern/diff/D73044650/) [ghstack-poisoned]
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10204
Note: Links to docs will display an error until the docs builds have been completed. ❌ 1 New FailureAs of commit 4cc9dd0 with merge base 6d1caca ( NEW FAILURE - The following job has failed:
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Stack from ghstack (oldest at bottom):
Context
As title. Add an alternative compute shader for int4 weight-only quantized linear that utilizes a co-operative algorithm. This shader is more performant than standard tiled algorithms for
gemvcases, i.e. whenmat1is a vector rather than a matrix.Changes
mat1is 1Differential Revision: D73044650