[Feature] Support downloading OpenMMLab projects on Ascend NPU

mim/commands/install.py

@@ -17,7 +17,8 @@
     DEFAULT_MMCV_BASE_URL,
     PKG2PROJECT,
     echo_warning,
-    get_torch_cuda_version,
+    exit_with_error,
+    get_torch_device_version,
 )
 
 
@@ -160,16 +161,24 @@ def get_mmcv_full_find_link(mmcv_base_url: str) -> str:
 
     Returns:
         str: The mmcv find links corresponding to the current torch version and
-        cuda version.
+        CUDA/NPU version.
     """
-    torch_v, cuda_v = get_torch_cuda_version()
+    torch_v, device, device_v = get_torch_device_version()
     major, minor, *_ = torch_v.split('.')
     torch_v = '.'.join([major, minor, '0'])
 
-    if cuda_v.isdigit():
-        cuda_v = f'cu{cuda_v}'
+    if device == 'cuda' and device_v.isdigit():
+        device_link = f'cu{device_v}'
+    elif device == 'ascend':
+        if not device_v.isdigit():
+            exit_with_error('Unable to install OpenMMLab projects via mim '
+                            'on the current Ascend NPU, '
+                            'please compile from source code to install.')
+        device_link = f'ascend{device_v}'
+    else:
+        device_link = 'cpu'
 
-    find_link = f'{mmcv_base_url}/mmcv/dist/{cuda_v}/torch{torch_v}/index.html'  # noqa: E501
+    find_link = f'{mmcv_base_url}/mmcv/dist/{device_link}/torch{torch_v}/index.html'  # noqa: E501
     return find_link
 
 

mim/utils/__init__.py

@@ -32,7 +32,7 @@
     get_package_info_from_pypi,
     get_package_version,
     get_release_version,
-    get_torch_cuda_version,
+    get_torch_device_version,
     highlighted_error,
     is_installed,
     is_version_equal,
@@ -59,7 +59,7 @@
     'get_installed_version',
     'get_installed_path',
     'get_latest_version',
-    'get_torch_cuda_version',
+    'get_torch_device_version',
     'is_installed',
     'parse_url',
     'PKG2PROJECT',

mim/utils/utils.py

@@ -23,6 +23,15 @@
 from .default import PKG2PROJECT
 from .progress_bars import rich_progress_bar
 
+try:
+    import torch
+    import torch_npu
+
+    IS_NPU_AVAILABLE = hasattr(
+        torch, 'npu') and torch.npu.is_available()  # type: ignore
+except Exception:
+    IS_NPU_AVAILABLE = False
+
 
 def parse_url(url: str) -> Tuple[str, str]:
     """Parse username and repo from url.
@@ -327,12 +336,37 @@ def get_installed_path(package: str) -> str:
         return osp.join(pkg.location, package2module(package))
 
 
-def get_torch_cuda_version() -> Tuple[str, str]:
-    """Get PyTorch version and CUDA version if it is available.
+def is_npu_available() -> bool:
+    """Returns True if Ascend PyTorch and npu devices exist."""
+    return IS_NPU_AVAILABLE
+
+
+def get_npu_version() -> str:
+    """Returns the version of NPU when npu devices exist."""
+    if not is_npu_available():
+        return ''
+    ascend_home_path = os.environ.get('ASCEND_HOME_PATH', None)
+    if not ascend_home_path or not os.path.exists(ascend_home_path):
+        raise RuntimeError(
+            highlighted_error(
+                f'ASCEND_HOME_PATH:{ascend_home_path} does not exists when '
+                'installing OpenMMLab projects on Ascend NPU.'
+                "Please run 'source set_env.sh' in the CANN installation path."
+            ))
+    npu_version = torch_npu.get_cann_version(ascend_home_path)
+    return npu_version
+
+
+def get_torch_device_version() -> Tuple[str, str, str]:
+    """Get PyTorch version and CUDA/NPU version if it is available.
 
     Example:
-        >>> get_torch_cuda_version()
-        '1.8.0', '102'
+        >>> get_torch_device_version()
+        '1.8.0', 'cpu', ''
+        >>> get_torch_device_version()
+        '1.8.0', 'cuda', '102'
+        >>> get_torch_device_version()
+        '1.11.0', 'ascend', '602'
     """
     try:
         import torch
@@ -344,11 +378,17 @@ def get_torch_cuda_version() -> Tuple[str, str]:
         torch_v = torch_v.split('+')[0]
 
     if torch.version.cuda is not None:
+        device = 'cuda'
         # torch.version.cuda like 10.2 -> 102
-        cuda_v = ''.join(torch.version.cuda.split('.'))
+        device_v = ''.join(torch.version.cuda.split('.'))
+    elif is_npu_available():
+        device = 'ascend'
+        device_v = get_npu_version()
+        device_v = ''.join(device_v.split('.'))
     else:
-        cuda_v = 'cpu'
-    return torch_v, cuda_v
+        device = 'cpu'
+        device_v = ''
+    return torch_v, device, device_v
 
 
 def cast2lowercase(input: Union[list, tuple, str]) -> Any:

setup.cfg

@@ -20,4 +20,4 @@ default_section = THIRDPARTY
 include_trailing_comma = true
 
 [codespell]
-ignore-words-list = te
+ignore-words-list = te, cann

tests/test_utils.py

@@ -4,6 +4,7 @@
 from mim.commands.install import cli as install
 from mim.commands.uninstall import cli as uninstall
 from mim.utils import get_github_url, parse_home_page
+from mim.utils.utils import get_torch_device_version, is_npu_available
 
 
 def setup_module():
@@ -39,6 +40,14 @@ def test_get_github_url():
         'mmcls') == 'https://github.com/open-mmlab/mmclassification.git'
 
 
+def test_get_torch_device_version():
+    torch_v, device, device_v = get_torch_device_version()
+    assert torch_v.replace('.', '').isdigit()
+    if is_npu_available():
+        assert device == 'ascend'
+        assert device_v.replace('.', '').isdigit()
+
+
 def teardown_module():
     runner = CliRunner()
     result = runner.invoke(uninstall, ['mmcv-full', '--yes'])