[nancy/gruss] Update microarchitecture Zen to Zen2 on Gruss

data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-1.json

@@ -118,8 +118,8 @@
     "turboboost_enabled": true
   },
   "performance": {
-    "core_flops": 19200000000,
-    "node_flops": 921600000000
+    "core_flops": 38400000000,
+    "node_flops": 1843200000000
   },
   "processor": {
     "cache_l1": null,
@@ -130,7 +130,7 @@
     "clock_speed": 2400000000,
     "ht_capable": true,
     "instruction_set": "x86-64",
-    "microarchitecture": "Zen",
+    "microarchitecture": "Zen 2",
     "microcode": "0x830104d",
     "model": "AMD EPYC",
     "other_description": "AMD EPYC 7352 24-Core Processor",