GitLab

* Moved convolutions and exposed them directly

* Added transposition to the unit test

* Minor bugfix in CPU version of DISCO transpose code

* Adding convolution tests to CI

* Added gradient check

* Checking the weight grad as well

* Added test for anisotropic kernels

* working distributed fwd SHT with flexible sharding and without padding

* fixing distributed sht with new logic

* fixed distributed SHT and ISHT with flexible padding

* working unittest for distributed fwd SHT

* distributed tests converted to unit tests

* bumping version number up to 0.6.4

* fixing small splitting bug in th distributed

* updated changeloc, removed tests folder

* Adding prototype implementation of disco convolutions

* adding s2convolutions.py

* Somewhat functional first implementation in Triton

* Somewhat functional first implementation in Triton

* Made batched execution work on GPU and refactored precomputation of kernel values and supports.

* Adding the Lobatto grid to the grid selection method in quadrature

* fixing bug in triton kernel when iterating over non-zeros

* Updating with working custom triton implementation of DISCO convolution

* Merged both forward and backward DISCO contraction into a single kernel

* Some cleanup and minor bugfix

* bugfixes to the reference implementation

* adding weights to s2conv

* removing unnecessary imports

* suggestion for torch harmonics, math should be checked thoroughly

* Intermediate working reference implementation for the transpose DISCO convolution. Fixed normalization of kernels

* adjusting cutoff frequency in disco convolution

* fixing transpose DISCO contraction

* moving triton to install_requires

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Co-authored-by: Thorsten Kurth <tkurth@nvidia.com>

* Added gradient check to test suite
* reduced size of the unit test
* switched to parametrized for unittests

Without this fix, importing torch_harmonics had run into a module import error
when trying to execute:
```import examples```