add the system class

Author: ksimpson-work

cuda_core/cuda/core/experimental/_system.py

@@ -6,10 +6,6 @@
 class System:
     """Represent the system and provide information about the CUDA environment."""
 
-    _instance = None
-    _driver_version = None
-    _devices = None
-
     def __new__(cls):
         if not cls._instance:
             cls._instance = super(System, cls).__new__(cls)
@@ -24,13 +20,12 @@ def driver_version(self) -> Tuple[int, int]:
         """Query the CUDA driver version.
 
         Returns:
-            namedtuple: a 2-tuple of (major, minor).
+            tuple: a 2-tuple of (major, minor).
         """
-        if self._driver_version is None:
-            version = handle_return(cuda.cuDriverGetVersion())
-            major = version // 1000
-            minor = (version % 1000) // 10
-            self._driver_version = (major, minor)
+        version = handle_return(cuda.cuDriverGetVersion())
+        major = version // 1000
+        minor = (version % 1000) // 10
+        self._driver_version = (major, minor)
         return self._driver_version
 
     @property
@@ -41,9 +36,8 @@ def num_devices(self) -> int:
     @property
     def devices(self) -> tuple:
         """Query the available device instances."""
-        if self._devices is None:
-            total = self.num_devices
-            self._devices = tuple(Device(device_id) for device_id in range(total))
+        total = self.num_devices
+        self._devices = tuple(Device(device_id) for device_id in range(total))
         return self._devices
 
 _system = System.__new__(System)