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docs: update backend capabilities #42

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12 changes: 7 additions & 5 deletions docs/backends.md
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ backend.
| Hygon | `WITH_HYGON` | Requires DTK and a DTK CUDA toolkit. |
| Cambricon | `WITH_CAMBRICON` | Requires `NEUWARE_HOME`. |
| Ascend | `WITH_ASCEND` | Requires Ascend toolkit. |
| T-Head | `WITH_THEAD` | Requires T-Head toolkit. |

Only one accelerator backend can be enabled at a time. CPU can be enabled
together with the selected accelerator backend.
Expand All @@ -27,7 +28,7 @@ All enabled runtime backends provide the core device and memory entry points
needed by the dispatching runtime API. Optional operations may return an error
status on backends that do not support them.

Current test expectations are:
Current backend capabilities are:

| Backend | Async memcpy | Host memory | Async memory | Memory info | Async memset | Events | Graph capture |
| --- | --- | --- | --- | --- | --- | --- | --- |
Expand All @@ -36,10 +37,11 @@ Current test expectations are:
| Iluvatar | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| MetaX | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Mars | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Moore | Yes | Yes | No | Yes | Yes | Yes | No |
| Hygon | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Cambricon | Yes | No | No | No | No | No | No |
| Ascend | Yes | No | No | No | No | No | Yes |
| Moore | Yes | Yes | No | Yes | Yes | Yes | Yes |
| Hygon | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Cambricon | Yes | No | No | No | Yes | No | Yes |
| Ascend | Yes | No | No | No | Yes | No | Yes |
| T-Head | Yes | Yes | Yes | Yes | Yes | Yes | Yes |

Treat a non-`kSuccess` status as the portable way to detect unsupported
operations.
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