diff --git a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-1.json b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-1.json
index 46810cb0613da1ac39f26c826a4fcc76ba81a9ea..07cf5a5cd5544b498667ecaa36dcd3f8684b831b 100644
--- a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-1.json
+++ b/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",
diff --git a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-2.json b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-2.json
index 058ef78e8475f7568cf621112ed6739b374515cd..7930aae7dd818dd49a18ad1b20ef42b35a92a87e 100644
--- a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-2.json
+++ b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-2.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",
diff --git a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-3.json b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-3.json
index 70ea5129116f34dec0b70020a048380a7c871877..d7800b06fabea47c174b99434225e30aa11ee3c5 100644
--- a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-3.json
+++ b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-3.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",
diff --git a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-4.json b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-4.json
index ca1a4e8578c33d426835801c28c5d5bb581af028..1137590c94fcfc9a94382b232f75353cbf89deef 100644
--- a/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-4.json
+++ b/data/grid5000/sites/nancy/clusters/gruss/nodes/gruss-4.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",
diff --git a/input/grid5000/sites/nancy/clusters/gruss/gruss.yaml b/input/grid5000/sites/nancy/clusters/gruss/gruss.yaml
index 827f718f35e7ab514e260eccf591cb06659a4d82..62e1265aca04873e3bcf19f3ce5b81dd026e0877 100644
--- a/input/grid5000/sites/nancy/clusters/gruss/gruss.yaml
+++ b/input/grid5000/sites/nancy/clusters/gruss/gruss.yaml
@@ -17,7 +17,7 @@ nodes:
     software:
       standard-environment: debian10-x64-std
     processor:
-      microarchitecture: Zen
+      microarchitecture: Zen 2
       clock_speed: 2400000000
     network_adapters:
       bmc: