From ec124607f47371a6cfd61a795f86a7f1cbd44651 Mon Sep 17 00:00:00 2001
From: wangshuai09 <391746016@qq.com>
Date: Sat, 27 Jan 2024 17:21:32 +0800
Subject: Add NPU Support

---
 modules/npu_specific.py | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 modules/npu_specific.py

(limited to 'modules/npu_specific.py')

diff --git a/modules/npu_specific.py b/modules/npu_specific.py
new file mode 100644
index 00000000..d8aebf9c
--- /dev/null
+++ b/modules/npu_specific.py
@@ -0,0 +1,34 @@
+import importlib
+import torch
+
+from modules import shared
+
+
+def check_for_npu():
+    if importlib.util.find_spec("torch_npu") is None:
+        return False
+    import torch_npu
+    torch_npu.npu.set_device(0)
+
+    try:
+        # Will raise a RuntimeError if no NPU is found
+        _ = torch.npu.device_count()
+        return torch.npu.is_available()
+    except RuntimeError:
+        return False
+
+
+def get_npu_device_string():
+    if shared.cmd_opts.device_id is not None:
+        return f"npu:{shared.cmd_opts.device_id}"
+    return "npu:0"
+
+
+def torch_npu_gc():
+    # Work around due to bug in torch_npu, revert me after fixed, @see https://gitee.com/ascend/pytorch/issues/I8KECW?from=project-issue
+    torch.npu.set_device(0)
+    with torch.npu.device(get_npu_device_string()):
+        torch.npu.empty_cache()
+
+
+has_npu = check_for_npu()
-- 
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