[ET-VK][Ez] Add utilities to check if one vTensor is a view of another #4846
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… account for small numerical differences ## Context Introduce a `check_close` function in `vulkan_compute_api_test` to account for small numerical differences when executing on the GPU. Otherwise some tests will be reported as failures on some platforms (i.e. Mac). Differential Revision: [D61666459](https://our.internmc.facebook.com/intern/diff/D61666459/) [ghstack-poisoned]
## Context This diff lays the foundation for the implementation of "view operators". These operators will not dispatch any shaders; they will be solely responsible for updating the sizes and strides metadata of the output tensor, which will use the same storage resource as the input tensor. These ops will be implemented by adding a "no-op" `ExecuteNode` instance to the `ComputeGraph`, which does not contain a shader but does contain a resize function to update sizes and strides upon a resize. This diff allows `ShaderInfo` to empty initialize, and add a bool operator to check if the ShaderInfo actually points to valid shader code. This will be used to construct "no-op" `ExecuteNode` instances which can be used to implement view operators. Differential Revision: [D61666460](https://our.internmc.facebook.com/intern/diff/D61666460/) [ghstack-poisoned]
## Context This diff lays the foundation for the implementation of "view operators". These operators will not dispatch any shaders; they will be solely responsible for updating the sizes and strides metadata of the output tensor, which will use the same storage resource as the input tensor. These ops will be implemented by adding a "no-op" ExecuteNode instance to the ComputeGraph, which does not contain a shader but does contain a resize function to update sizes and strides upon a resize. This diff allows `ExecuteNode` to empty initialize. If the `ShaderInfo` of the `ExecuteNode` instance is not valid, then the `execute()` function of the `ExecuteNode` instance will be a no-op. Differential Revision: [D61666465](https://our.internmc.facebook.com/intern/diff/D61666465/) [ghstack-poisoned]
## Context This diff introduces dim order as a core metadata member of `vTensor`. The dim order is a better source of truth for the data layout of a buffer backed tensor because it is less ambiguous than the strides; when multiple dims have a stride of 1, it is ambiguous which dim comes "before" the other. This amibiguity makes it impossible to update the strides correctly when the tensor is resized. ## Changes * Introduce `dim_order_` as a core metadata member of `vTensor` class * Tensor view construction now accepts `new_dim_order` as an argument instead of `new_strides` * Introduce `virtual_reconfigure` member function of `vTensor` which is an extension of `virtual_resize` that allows updating of sizes as well as strides (via updating the dim order) Differential Revision: [D61666464](https://our.internmc.facebook.com/intern/diff/D61666464/) [ghstack-poisoned]
## Context TSIA. Add an implementation for matrix multiplication for buffer-backed tensors. This will be used forn the SDPA + KV Cache update custom op. Differential Revision: [D61666461](https://our.internmc.facebook.com/intern/diff/D61666461/) [ghstack-poisoned]
## Context In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another. Differential Revision: [D61666458](https://our.internmc.facebook.com/intern/diff/D61666458/) [ghstack-poisoned]
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/4846
Note: Links to docs will display an error until the docs builds have been completed. ✅ No FailuresAs of commit 237cfec with merge base f492d96 ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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This pull request was exported from Phabricator. Differential Revision: D61666458 |
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Aug 22, 2024
…vTensor is a view of another" ## Context In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another. Differential Revision: [D61666458](https://our.internmc.facebook.com/intern/diff/D61666458/) [ghstack-poisoned]
…w of another" ## Context In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another. Differential Revision: [D61666458](https://our.internmc.facebook.com/intern/diff/D61666458/) [ghstack-poisoned]
Contributor
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This pull request was exported from Phabricator. Differential Revision: D61666458 |
…vTensor is a view of another" ## Context In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another. Differential Revision: [D61666458](https://our.internmc.facebook.com/intern/diff/D61666458/) [ghstack-poisoned]
…w of another" ## Context In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another. Differential Revision: [D61666458](https://our.internmc.facebook.com/intern/diff/D61666458/) [ghstack-poisoned]
Contributor
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This pull request was exported from Phabricator. Differential Revision: D61666458 |
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Context
In the implementation of view operators, one of the pre-conditions is that the output tensor is a view of the input. This diff adds some utilities to check that one tensor is a view of another.
Differential Revision: D61666458