blog/design-space-sweeps: add comments to code sample

_posts/2024-08-28-design-space-sweeps.md

@@ -77,31 +77,36 @@ are just instantiating classes, feel free to use your favorite Python constructs
 to do so! I decided to go for `itertools.product()` and a few simple for-loops:
 
 ```python
+# Just some imports from the SimBricks orchestration framework
 from simbricks.orchestration import experiments as exp
 from simbricks.orchestration import nodeconfig as node
 from simbricks.orchestration import simulators as sim
+
 import itertools
 
+# All experiments we set up go in here
 experiments = []
 
+# The system- and component-level design choices we want to evaluate
 num_clients_opts = [4, 16, 128]
 num_servers_opts = [1, 2, 4, 8]
 num_accel_per_server_opts = [1, 2]
 accel_clk_freq_opts = [100, 400]
 background_traffic_opts = [0.5, 0.8]
 
+# Actually build the experiments now
 for (
     num_clients,
     num_servers,
     num_accelerators,
     accel_clk_freq,
-    background_traffic,
+    background_traffic
 ) in itertools.product(
     num_clients_opts,
     num_servers_opts,
     num_accel_per_server_opts,
     accel_clk_freq_opts,
-    background_traffic_opts,
+    background_traffic_opts
 ):
     experiment = exp.Experiment(
         f"<experiment_name>-{num_servers}s-{num_clients}c-"