diff --git a/input/grid5000/sites/grenoble/clusters/drac/drac.yaml b/input/grid5000/sites/grenoble/clusters/drac/drac.yaml
index 5bbdbe16db2c36df98b5408cab8e3e8fe0ca43a3..18b75dfc5dbc90be21f6ea747f38371c8497f38b 100644
--- a/input/grid5000/sites/grenoble/clusters/drac/drac.yaml
+++ b/input/grid5000/sites/grenoble/clusters/drac/drac.yaml
@@ -11,10 +11,6 @@ nodes:
     processor:
       microarchitecture: POWER8NVL
       clock_speed: 4000000000
-    architecture:
-      nb_cores: 20
-      nb_procs: 2
-      nb_threads: 160
     supported_job_types:
       deploy: true
       besteffort: true