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[feat] Support 1D topk #1491

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merged 1 commit into from
Dec 1, 2022
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Description

The TensorRT topk layer requires at least 2 dimensions in the input tensor. Previously you would see this error for 1D inputs: ERROR: [Torch-TensorRT TorchScript Conversion Context] - 3: (Unnamed Layer* 74) [TopK]: at least 2 dimensions are required for input.

This PR adds an unsqueeze for the inputs and corresponding squeeze for the outputs to workaround this limitation.

Fixes # (issue)

Type of change

Please delete options that are not relevant and/or add your own.

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • This change requires a documentation update

Checklist:

  • My code follows the style guidelines of this project (You can use the linters)
  • I have performed a self-review of my own code
  • I have commented my code, particularly in hard-to-understand areas and hacks
  • I have made corresponding changes to the documentation
  • I have added tests to verify my fix or my feature
  • New and existing unit tests pass locally with my changes
  • I have added the relevant labels to my PR in so that relevant reviewers are notified

# Description
The TensorRT topk layer requires at least 2 dimensions in the input tensor. Previously you would see this error for 1D inputs:
`ERROR: [Torch-TensorRT TorchScript Conversion Context] - 3: (Unnamed Layer* 74) [TopK]: at least 2 dimensions are required for input.`

This PR adds an unsqueeze for the inputs and corresponding squeeze for the outputs to workaround this limitation.

Fixes # (issue)

## Type of change

Please delete options that are not relevant and/or add your own.

- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing functionality to not work as expected)
- This change requires a documentation update

# Checklist:

- [ ] My code follows the style guidelines of this project (You can use the linters)
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas and hacks
- [ ] I have made corresponding changes to the documentation
- [ ] I have added tests to verify my fix or my feature
- [ ] New and existing unit tests pass locally with my changes
- [ ] I have added the relevant labels to my PR in so that relevant reviewers are notified
@github-actions github-actions bot added component: conversion Issues re: Conversion stage component: converters Issues re: Specific op converters component: core Issues re: The core compiler component: tests Issues re: Tests labels Nov 30, 2022
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@peri044 peri044 left a comment

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LGTM

@peri044 peri044 merged commit 3decf45 into pytorch:master Dec 1, 2022
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