diff --git a/README.md b/README.md
index e69de29..7e53d62 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,3 @@
+Run the simulation using:
+
+    uv run python -m simulation.app
diff --git a/simulation/app.py b/simulation/app.py
index 5c7fac6..9c39d00 100644
--- a/simulation/app.py
+++ b/simulation/app.py
@@ -1,4 +1,5 @@
 import os
+import random
 from concurrent.futures import ProcessPoolExecutor, as_completed
 from dataclasses import dataclass
 
@@ -87,7 +88,8 @@ def run_simulation(n_servers=2, lam=40):
 
 
 if __name__ == "__main__":
-    with ProcessPoolExecutor(max_workers=os.cpu_count()) as executor:
+    max_workers = max((os.cpu_count() or 0) - 1, 1)
+    with ProcessPoolExecutor(max_workers=max_workers) as executor:
         n_servers = [n + 1 for n in range(10)]
         lam = [(n + 1) * 4 for n in range(10)]
         parameter_values = [
@@ -98,7 +100,7 @@ if __name__ == "__main__":
         ]
         futures = [
             executor.submit(run_simulation, **parameters)
-            for parameters in parameter_values
+            for parameters in random.sample(parameter_values, len(parameter_values))
         ]
 
         results = []