use max 6 cores for CP2K on A64FX

Author: bedroge

eb_hooks.py

@@ -1703,6 +1703,9 @@ def set_maximum(parallel, max_value):
     # Deucalion has 32GB HBM for 48 cores per node
     CPU_TARGET_A64FX: (divide_by_factor, 4),
     # software-specific limits
+    'CP2K': {
+        CPU_TARGET_A64FX: (set_maximum, 6),
+    },
     'libxc': {
         '*': (divide_by_factor, 2),
         CPU_TARGET_A64FX: (set_maximum, 12),