Add cache simulator script and first results

Signed-off-by: Rafael Ravedutti <rafaelravedutti@gmail.com>

util/cache.py

@@ -0,0 +1,33 @@
+import sys
+from cachesim import CacheSimulator, Cache, MainMemory
+
+filename = sys.argv[1]
+mem = MainMemory()
+
+#l3 = Cache("L3", 20480, 16, 64, "LRU")  # 20MB: 20480 sets, 16-ways with cacheline size of 64 bytes
+#l2 = Cache("L2", 256, 4, 64, "LRU", store_to=l3, load_from=l3)  # 256KB
+#l1 = Cache("L1", 64, 8, 64, "LRU", store_to=l2, load_from=l2)  # 32KB
+
+# Cascade Lake
+l3 = Cache("L3", 28672, 11, 64, "LRU")  # 28MB: 11-ways with cacheline size of 64 bytes
+l2 = Cache("L2", 1024, 16, 64, "LRU", store_to=l3, load_from=l3)  # 1MB
+l1 = Cache("L1", 32, 8, 64, "LRU", store_to=l2, load_from=l2)  # 32KB
+mem.load_to(l3)
+mem.store_from(l3)
+cs = CacheSimulator(l1, mem)
+
+with open(filename, 'r') as fp:
+    for line in fp.readlines():
+        op, addr = line.split(": ")
+        op = op[0]
+        addr = int(addr, 16)
+
+        if op == 'W':
+            cs.store(addr, length=8)
+        elif op == 'R':
+            cs.load(addr, length=8)
+        else:
+            sys.exit("Invalid operation: {}".format(op))
+
+cs.force_write_back()
+cs.print_stats()