Add module list and loading

README.md

@@ -158,6 +158,13 @@ cpus_per_task: 4
 time_limit: 3-00:00
 
 
+# Modules to load - an optional list of environment modules that the
+# command you wish to execute needs to be loaded
+modules:
+  - matlab/2013a
+  - python/2.7.x-anaconda
+
+
 # Now we configure the list of parameters we want to explore.
 #
 # For each parameter the following properties are required:

param_runner/param.py

 import logging
 import os
+import subprocess
 import re
 from collections import OrderedDict
 from copy import deepcopy
@@ -88,7 +89,31 @@ class ParamFile(object):
 
         logging.info("Parameter file is valid")
 
-        return True
+        return self.checkModules(params)
+
+
+    def checkModules(self, params):
+        """Use the environment modules system modulecmd to check any modules
+        requested for this run actually exist on the system
+        """
+
+        modules_ok = True
+
+        if 'modules' in params.keys():
+
+            for mod_name in params['modules']:
+                cmd = ['modulecmd', 'sh', 'show', mod_name]
+                output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+
+                if "Unable to locate" in output:
+                    logging.error('Module %s was not found.' % mod_name)
+                    module_ok = False
+                else:
+                    logging.info('Module %s will be loaded.' % mod_name)
+
+        return modules_ok
+
+
 
     def lint(self):
         """Lint our parameter file with yamllint

param_runner/schema/param_runner.jsonschema.yml

@@ -66,6 +66,18 @@
                 ]
             }
         },
+        "modules":{
+          "type":"array",
+          "minItems":0,
+          "uniqueItems":true,
+          "additionalItems":true,
+          "title":"Software Modules",
+          "description":"A list of environment module names that should be loaded to run this job.",
+          "name":"modules",
+          "items":{
+              "type":"string"
+            }
+        },
         "parameters":{
             "type":"array",
             "minItems":1,

test/test_data/test_params.yaml

@@ -30,6 +30,10 @@ cpus_per_task: 4
 # Time limit
 time_limit: 3-00:00:00
 
+# Environment Module to Load
+modules:
+  - matlab/2013a
+  - python/2.7.x-anaconda
 
 # The list of parameters to explore
 #