cluster spec sheet: Use M.1 cluster sizes instead

Author: def-

test/cluster-spec-sheet/mzcompose.py

@@ -2603,7 +2603,14 @@ def replica_size_for_scale(self, scale: int) -> str:
         """
         Returns the replica size for a given scale.
         """
-        return f"{scale}00cc"
+        return {
+            1: "M.1-xsmall",
+            2: "M.1-small",
+            4: "M.1-large",
+            8: "M.1-2xlarge",
+            16: "M.1-4xlarge",
+            32: "M.1-8xlarge",
+        }[scale]
 
 
 class DockerTarget(BenchTarget):
@@ -2638,7 +2645,7 @@ def cleanup(self) -> None:
         self.composition.stop("materialized")
 
     def replica_size_for_scale(self, scale: int) -> str:
-        # 100cc == 2 workers
+        # M.1-xsmall == 2 workers
         return f"scale=1,workers={2*scale}"
 
     def max_scale(self) -> int | None:
@@ -2910,19 +2917,14 @@ def analyze_cluster_results_file(file: str) -> None:
     print(f"--- Analyzing cluster results file {file} ...")
 
     def extract_cluster_size(s: str) -> float:
-        match = re.search(r"(\d+)(?:(cc)|(C))", s)
-        if match:
-            if match.group(2):  # 'cc' match
-                return float(match.group(1)) / 100.0
-            elif match.group(3):  # 'C' matches
-                return float(match.group(1))
-        match = re.search(r"(?:scale=)(\d+)(?:,workers=)(\d+)", s)
-        if match:
-            # We don't have credits in docker, so approximate it
-            # 100cc == 2 workers
-            if match.group(1) and match.group(2):
-                return float(match.group(1)) * float(match.group(2)) / 2
-        raise ValueError(f"Invalid cluster size format: {s}")
+        return {
+            "M.1-xsmall": 1,
+            "M.1-small": 2,
+            "M.1-large": 4,
+            "M.1-2xlarge": 8,
+            "M.1-4xlarge": 16,
+            "M.1-8xlarge": 32,
+        }[s]
 
     df = pd.read_csv(file)
     if df.empty: