Change default node and core requests for policy runs

Changed the default node and core values to increase parallelization and runtime for a policy job. Also fix validation for both of those values that was being skipped due to incorrect type checking and lack of parentheses. Type checking for both is performed by argparse automatically so there's no need for it in the validation functions.

src/run-policy/run-submit-pol-job.py

@@ -94,12 +94,12 @@ def validate_partition(partition):
     return partition
 
 def validate_nodes(n):
-    if not isinstance(n,int) and n >= 1 and n <= 4:
-        raise ValueError('Nodes must be an integer between 1 and 4')
+    if not (n >= 1 and n <= 16):
+        raise ValueError('Nodes must be an integer between 1 and 16')
 
 def validate_cores(n):
-    if not isinstance(n,int) and n >= 1 and n <= 48:
-        raise ValueError('Cores must be an integer between 1 and 48')
+    if not (n >= 1 and n <= 16):
+        raise ValueError('Cores per node must be an integer between 1 and 16')
 
 # Need to validate that the output directory exists. This will not create a directory that does not already exist.
 def validate_output_directory(outdir):