number of warmup iters is now configurable + clean up lit config

Author: tkarna

python/examples/xegpu_matmul/lit.local.cfg

@@ -1 +1 @@
-config.excludes = ["README.md", "mlir_utils.py", "payload.py", "runner.py", "schedule.py"]
+config.excludes = ["mlir_utils.py", "payload.py", "runner.py", "schedule.py"]

python/examples/xegpu_matmul/matmul.py

@@ -293,6 +293,12 @@ def parse_cli():
         default=1000,
         help="Number of runs to average the execution time.",
     )
+    parser.add_argument(
+        "--nwarmup",
+        type=int,
+        default=20,
+        help="Number of warm-up iterations before benchmarking.",
+    )
     parser.add_argument(
         "--relu",
         action="store_true",
@@ -375,7 +381,7 @@ def parse_cli():
             times = benchmark(
                 wload,
                 nruns=args.nruns,
-                nwarmup=15,
+                nwarmup=args.nwarmup,
                 check_correctness=args.check_result,
                 schedule_parameters=params,
                 verbose=1,