feat: add amdsmi probe + typeperf max fix

providers/_utils.py

@@ -378,6 +378,100 @@ class _TypeperfGpuQuery:
             return None
 
 
+# ---------------------------------------------------------------------------
+# amdsmi-based GPU utilisation (official AMD SMI library)
+#
+# Uses the AMD SMI Python package which ships with ROCm. Talks directly
+# to the AMD driver — not through WDDM. Reports real GPU engine utilisation
+# (GFX, MM, MEM) as percentages 0–100%.
+#
+# Install:  pip install amdsmi
+# Requires: ROCm 6+ (user has ROCm 7.2)
+# ---------------------------------------------------------------------------
+
+class _AmdSmiGpuQuery:
+    """GPU utilisation reader via official AMD SMI Python library."""
+
+    def __init__(self):
+        self._handle = None
+        self._initialized = False
+        self._ok = False
+
+    def init(self) -> bool:
+        try:
+            import amdsmi as _smi
+            _smi.amdsmi_init()
+            self._smi = _smi
+            handles = _smi.amdsmi_get_processor_handles()
+            if not handles:
+                logger.warning("XPUSYSMonitor: amdsmi — no processor handles.")
+                _smi.amdsmi_shut_down()
+                return False
+
+            self._handle = handles[0]
+            self._initialized = True
+
+            # Test read to confirm it works
+            try:
+                activity = _smi.amdsmi_get_gpu_activity(self._handle)
+                logger.info(
+                    f"XPUSYSMonitor: amdsmi GPU activity test — "
+                    f"{activity!r}"
+                )
+            except Exception as exc:
+                logger.warning(
+                    f"XPUSYSMonitor: amdsmi activity test failed — {exc}"
+                )
+
+            self._ok = True
+            logger.info("XPUSYSMonitor: amdsmi GPU counters OK.")
+            return True
+
+        except ImportError:
+            logger.info(
+                "XPUSYSMonitor: amdsmi not installed — "
+                "run `pip install amdsmi` to enable AMD SMI monitoring."
+            )
+            return False
+        except Exception as exc:
+            logger.warning(f"XPUSYSMonitor: amdsmi init error — {exc}")
+            try:
+                self._smi.amdsmi_shut_down()
+            except Exception:
+                pass
+            return False
+
+    def read_gpu_utilization(self) -> float:
+        """Return GPU utilisation % via amdsmi (GFX engine)."""
+        if not self._ok or self._handle is None:
+            return 0.0
+        try:
+            activity = self._smi.amdsmi_get_gpu_activity(self._handle)
+
+            # amdsmi_get_gpu_activity returns engine utilisation.
+            # The exact return type depends on the version. Try common
+            # access patterns: attribute, dict key, or index.
+            if hasattr(activity, 'gfx'):
+                return float(activity.gfx)
+            if isinstance(activity, dict):
+                return float(activity.get('gfx', activity.get('GFX', 0.0)))
+            if isinstance(activity, (list, tuple)):
+                return float(activity[0]) if activity else 0.0
+
+            # Last resort: try treating it as a number directly
+            return float(activity)
+        except Exception:
+            return 0.0
+
+    def close(self) -> None:
+        if self._initialized:
+            try:
+                self._smi.amdsmi_shut_down()
+            except Exception:
+                pass
+        self._ok = False
+
+
 __all__ = [
     "_is_admin",
     "_get_cpu_info",
@@ -385,4 +479,5 @@ __all__ = [
     "_read_commit_charge",
     "_PdhQuery",
     "_TypeperfGpuQuery",
+    "_AmdSmiGpuQuery",
 ]

providers/amd.py

@@ -18,7 +18,7 @@ import sys
 from typing import Tuple
 
 from .base import BaseGPUProvider, GPUSnapshot
-from ._utils import _get_cpu_info, _read_cpu_ram_stats, _TypeperfGpuQuery, _is_admin
+from ._utils import _get_cpu_info, _read_cpu_ram_stats, _TypeperfGpuQuery, _AmdSmiGpuQuery, _is_admin
 
 logger = logging.getLogger("XPUSYSMonitor")
 
@@ -52,11 +52,13 @@ class AMDProvider(BaseGPUProvider):
         self._check_torch()
         self._check_psutil()
 
-        # Windows GPU utilisation — typeperf (primary, reliable CSV output)
+        # Windows GPU utilisation — amdsmi (official) -> typeperf (fallback)
         # PDH has wildcard-counter issues with AMD drivers, so skip it.
-        self._pdh_ok = False  # PDH disabled for AMD (wildcard handling unreliable)
+        self._pdh_ok = False
+        self._as_gpu = _AmdSmiGpuQuery()
+        self._as_gpu_ok = self._as_gpu.init()
         self._tp_gpu = _TypeperfGpuQuery()
-        self._tp_gpu_ok = self._tp_gpu.init()
+        self._tp_gpu_ok = self._tp_gpu.init() if not self._as_gpu_ok else False
 
         # BaseGPUProvider.__init__ starts the polling thread — call last
         super().__init__(interval_ms=interval_ms)
@@ -185,12 +187,11 @@ class AMDProvider(BaseGPUProvider):
         """
         Return GPU utilisation %.
 
-        Tries PDH API first (sub-millisecond, ctypes).
-        Falls back to PowerShell Get-Counter if PDH is unavailable
-        (slower ~100-300ms but works on any Windows WDDM driver).
+        Tries amdsmi (official AMD SMI, bypasses WDDM).
+        Falls back to typeperf (WDDM counters, best-effort).
         """
-        if self._pdh_ok:
-            return self._pdh.read_gpu_utilization()
+        if self._as_gpu_ok:
+            return self._as_gpu.read_gpu_utilization()
         if self._tp_gpu_ok:
             return self._tp_gpu.read_gpu_utilization()
         return 0.0