adds toggle for using core masks

TurTLE/_code.py

@@ -760,6 +760,9 @@ class _code(_base):
             script_file.write('export OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK}\n')
 
         # explicit binding options that can be used further on if needed
+        if 'use_TurTLE_core_distribution' not in host_info.keys():
+            host_info['use_TurTLE_core_distribution'] = False
+        if host_info['use_TurTLE_core_distribution']:
             core_masks = TurTLE.tools.distribute_cores_evenly(
                     nprocesses = nb_processes_per_node,
                     nthreads_per_process = nb_threads_per_process,

pc_host_info.py

@@ -34,7 +34,8 @@ host_info = {'type' : 'pc'}
 #                  'account'     : info_template_account,
 #                  'executable_launcher'           : info_template_executable_launcher,
 #                  'extra_slurm_lines'             : info_template_extra_slurm_lines,
-#                  'explicit_slurm_environment'  : info_template_explicit_slurm_environment}
+#                  'explicit_slurm_environment'    : info_template_explicit_slurm_environment,
+#                  'use_TurTLE_core_distribution'  : info_use_TurTLE_core_distribution}
 
 # info_template_type can be one of:
 # 'pc'            --- jobs run interactively
@@ -73,3 +74,7 @@ host_info = {'type' : 'pc'}
 # in the submission script, or whether the cluster chooses it based on the
 # resources requested
 
+# info_use_TurTLE_core_distribution, relevant for `SLURM` clusters,
+# is a bool specifying whether TurTLE should request explicit core
+# masks for the individual MPI processes.
+