# User guide

Installing bartorch and getting help with it: the supported platforms and
requirements, the installation with the optional components a workflow needs,
and where to report a defect, ask a question or disclose a vulnerability.  The
array layout, trajectory units and Fourier-transform conventions are stated in
{doc}`../../explanation/data-layout`, the other concepts in
{doc}`../../explanation/index`, and complete reconstructions in the
{doc}`examples <../../auto_examples/index>`.

| Page | Purpose |
| --- | --- |
| {doc}`prerequisites` | Python and PyTorch requirements, supported platforms, and the optional extras |
| {doc}`installation` | Installing PyTorch and bartorch, extras, source builds, CUDA and the command line |
| {doc}`from-bart-sigpy` | BART commands and sigpy calls, and their equivalents here |
| {doc}`issues` | What a bug report or a numerical discrepancy report contains |
| {doc}`discussions` | Where questions and proposals go |
| {doc}`security` | Reporting a vulnerability privately |

```{toctree}
:hidden:

prerequisites
installation
from-bart-sigpy
issues
discussions
security
```