Release v13.3 of the CUDA samples with CUDA 13.3 Toolkit (#435)

This is the release of the CUDA 13.3 samples, which include additions for CUDA Tile C++, and updated CCCL and Python samples.

python/1_GettingStarted/blurImageUnifiedMemory/README.md

@@ -106,10 +106,19 @@ When returning a zero-copy view, the caller must close the buffers after use (e.
 - CUDA Toolkit 13.0 or newer
 - Python 3.10 or newer
 - `cuda-python` package (13.0.0+)
-- `cuda-core` package (>=0.6.0)
+- `cuda-core` package (>=1.0.0)
 - `numpy` package (>=2.3.2)
 - `pillow` package (10.0.0+)
 
+### Platform Support:
+
+This sample relies on `ManagedMemoryResource` with **concurrent host access**
+to managed allocations while GPU kernels are in flight. That behavior
+requires the device property `concurrent_managed_access=True`, which is only
+supported on Linux with HMM (Pascal and newer). On Windows (WDDM/MCDM/TCC)
+the property is `False`, so the sample exits early with a waive message and
+exit code `2` instead of attempting a run that would crash the process.
+
 ## Installation
 
 ```bash

python/1_GettingStarted/blurImageUnifiedMemory/blurImageUnifiedMemory.py

@@ -142,8 +142,8 @@ def blur_image_unified_memory(
     mr = ManagedMemoryResource(options)
 
     # Allocate unified memory buffers for source and destination images
-    src_buf = mr.allocate(n_bytes, stream)
-    dst_buf = mr.allocate(n_bytes, stream)
+    src_buf = mr.allocate(n_bytes, stream=stream)
+    dst_buf = mr.allocate(n_bytes, stream=stream)
     try:
         # Synchronize to ensure allocations are complete before CPU access
         stream.sync()
@@ -197,6 +197,14 @@ def main():
     3. Unified memory with cuda.core.ManagedMemoryResource
     4. Kernel launch with cuda.core.launch and LaunchConfig
     """
+    if sys.platform == "win32":
+        print(
+            "This sample relies on ManagedMemoryResource with concurrent host "
+            "access, which is not supported on Windows "
+            "(concurrent_managed_access=False). Waiving this sample."
+        )
+        sys.exit(2)
+
     print("=" * 60)
     print("Image Blur with Unified Memory (cuda.core)")
     print("=" * 60)

python/1_GettingStarted/blurImageUnifiedMemory/requirements.txt

@@ -1,6 +1,6 @@
 # Image Blur with Unified Memory Sample Requirements
 
 cuda-python>=13.0.0
-cuda-core>=0.6.0
+cuda-core>=1.0.0
 numpy>=2.3.2
 pillow>=10.0.0