add basic host_info file

pc_host_info.py

+host_info = {'type' : 'pc'}
+
+
+# info_template = {'type'        : info_template_type,
+#                  'MPI'         : info_template_MPI,
+#                  'environment' : info_template_environment,
+#                  'deltanprocs' : info_template_deltanprocs
+#                  'mail_address': info_template_mail_address}
+
+# info_template_type can be one of:
+# 'pc'            --- jobs run interactively
+# 'cluster'       --- cluster with SGE queueing system
+# 'SLURM'         --- cluster with SLURM queueing system
+# 'IBMLoadLeveler --- cluster with IBM Load Leveler queueing system
+
+# info_template_MPI can be one of:
+# 'openmpi'   --- it means mpirun takes "x" as the parameter to set an environment variable
+# not defined --- use "env" instead of "x"
+
+# info_template_environment, relevant for clusters,
+# is the default queue to which jobs are submitted
+
+# info_template_deltanprocs, relevant for clusters,
+# is the number of cores per node
+
+# info_template_mail_address, relevant for clusters,
+# is the contact e-mail address placed in the job scripts.