Remove try-except wrapper and performance demo per code review feedback

Co-authored-by: leofang <5534781+leofang@users.noreply.github.com>

Author: Copilot

cuda_core/cuda/core/experimental/_memory.py

@@ -329,24 +329,19 @@ def __init__(self, device_id: int):
         # Set a higher release threshold to improve performance when there are no active allocations.
         # By default, the release threshold is 0, which means memory is immediately released back
         # to the OS when there are no active suballocations, causing performance issues.
-        try:
-            # Check current release threshold
-            current_threshold = handle_return(
-                driver.cuMemPoolGetAttribute(self._handle, driver.CUmemPool_attribute.CU_MEMPOOL_ATTR_RELEASE_THRESHOLD)
-            )
-            # If threshold is 0 (default), set it to maximum to retain memory in the pool
-            if int(current_threshold) == 0:
-                handle_return(
-                    driver.cuMemPoolSetAttribute(
-                        self._handle,
-                        driver.CUmemPool_attribute.CU_MEMPOOL_ATTR_RELEASE_THRESHOLD,
-                        driver.cuuint64_t(0xFFFFFFFFFFFFFFFF),
-                    )
+        # Check current release threshold
+        current_threshold = handle_return(
+            driver.cuMemPoolGetAttribute(self._handle, driver.CUmemPool_attribute.CU_MEMPOOL_ATTR_RELEASE_THRESHOLD)
+        )
+        # If threshold is 0 (default), set it to maximum to retain memory in the pool
+        if int(current_threshold) == 0:
+            handle_return(
+                driver.cuMemPoolSetAttribute(
+                    self._handle,
+                    driver.CUmemPool_attribute.CU_MEMPOOL_ATTR_RELEASE_THRESHOLD,
+                    driver.cuuint64_t(0xFFFFFFFFFFFFFFFF),
                 )
-        except Exception:
-            # If setting the attribute fails (e.g., on older drivers), continue without error
-            # to maintain backward compatibility
-            pass
+            )
 
     def allocate(self, size: int, stream: Stream = None) -> Buffer:
         """Allocate a buffer of the requested size.