Update README.md; Error in CUDA_HOME

[taoranyi]

Setting CUDA_HOME allows the _check_cuda_version function in torch to correctly identify the CUDA version, otherwise it will cause the error mentioned in issue 12.

[darkon12]

Setting CUDA_HOME allows the _check_cuda_version function in torch to correctly identify the CUDA version, otherwise it will cause the error mentioned in #12 (comment).

Where ?

[AlexNolasco]

Setting CUDA_HOME allows the _check_cuda_version function in torch to correctly identify the CUDA version, otherwise it will cause the error mentioned in #12 (comment).

Where ?

It's explained in the commit
https://github.com/microsoft/TRELLIS/pull/33/files

[darkon12]

It's explained in the commit https://github.com/microsoft/TRELLIS/pull/33/files

Installed 11.8 and export both paths, still got:
#26

[taoranyi]

This PR only addresses the following error: The detected CUDA version (12.4) mismatches the version that was used to compile PyTorch (11.8). Please make sure to use the same CUDA versions.