change default jobs_per_node and intel cpu_cnt (#417)

qcengine/config.py

@@ -43,6 +43,11 @@ def get_global(key: Optional[str] = None) -> Union[str, Dict[str, Any]]:
         # Work through VMs and logical cores.
         if hasattr(psutil.Process(), "cpu_affinity"):
             cpu_cnt = len(psutil.Process().cpu_affinity())
+            full_physical_cnt = psutil.cpu_count(logical=False)
+            full_logical_cnt = psutil.cpu_count(logical=True)
+            if (cpu_cnt == full_logical_cnt) and (full_physical_cnt is not None):
+                # cpu_affinity isn't capturing deliberate setting but just VMs, so use physical
+                cpu_cnt = full_physical_cnt
         else:
             cpu_cnt = psutil.cpu_count(logical=False)
             if cpu_cnt is None:
@@ -84,7 +89,7 @@ class NodeDescriptor(pydantic.BaseModel):
     
     The default value, ``None``, will allow QCEngine to autodetect the number of cores.""",
     )
-    jobs_per_node: int = 2
+    jobs_per_node: int = 1
     retries: int = 0
 
     # Cluster options