cuda graphs.

Author: sayakpaul

examples/profiling/README.md

@@ -312,4 +312,7 @@ kernels, so this tiny sync balloons to 2.3s.
 * As mentioned above, we profiled with regional compilation so it's possible that
 there are still some gaps outside the compiled regions. A full compilation
 will likely mitigate it. In case it doesn't, the above observations could
-be useful to mitigate that.
+be useful to mitigate that.
+* Use of CUDA Graphs can also help mitigate CPU overhead related issues. When
+using "reduce-overhead" and "max-autotune" in `torch.compile` triggers the
+use of CUDA Graphs.