make launcher more flexible

TurTLE/_code.py

@@ -403,11 +403,16 @@ class _code(_base):
                 subprocess.check_call(submit_atoms + [os.path.join(self.work_dir, job_script_name)])
 
         elif self.host_info['type'] == 'pc':
-            command_atoms = ['mpirun',
-                             '-np',
-                             '{0}'.format(nb_processes),
-                             './' + self.name,
-                             self.simname]
+            if 'executable_launcher' in self.host_info.keys():
+                command_atoms = [self.host_info['executable_launcher']]
+                if self.host_info['executable_launcher'] == 'srun':
+                    command_atoms += ['-p', 'interactive']
+            else:
+                command_atoms = ['mpirun']
+            command_atoms += ['-n',
+                              '{0}'.format(nb_processes),
+                              './' + self.name,
+                              self.simname]
             os.chdir(self.work_dir)
             custom_env = os.environ
             custom_env['OMP_NUM_THREADS'] = str(nb_threads_per_process)