Re #1753 should fix test_mpi_wrapper and better warning in ClusterSlu…

…rm.m and parallel_config.m

# Conflicts:
#	herbert_core/classes/MPIFramework/@ClusterSlurm/ClusterSlurm.m

herbert_core/classes/MPIFramework/@parallel_config/parallel_config.m

@@ -275,7 +275,7 @@
     properties(Access = private)
         % Property, used by setter of cluster configuration to keep cluster
         % configuration until all properties are set and final validation
-        % may be performed. 
+        % may be performed.
         trial_cluster_config_;
     end
 
@@ -491,7 +491,13 @@
         function obj = set.parallel_threads(obj,n_threads)
             n_threads = floor(n_threads);
             n_workers = get_or_restore_field(obj, 'parallel_workers_number');
-            n_poss_threads = floor(obj.n_cores/n_workers);
+            if ispc % let's assume pc is Intel so threades are double number of cores
+                % this estimeat will not be too wrong even if it is AMD,
+                % but would remove bunch annoying messages otherwise
+                n_poss_threads = floor(2*obj.n_cores/n_workers);
+            else
+                n_poss_threads = floor(obj.n_cores/n_workers);
+            end
 
             if n_threads < 0
                 error('HERBERT:parallel_config:invalid_argument', ...

herbert_core/classes/MPIFramework/@parallel_config/private/check_and_set_cluster_.m

@@ -18,7 +18,7 @@
 mff.parallel_cluster = full_cl_name;
 
 if ~mff.framework_available % if cluster available, store its name in
-    error('HERBERT:parallel_config:runtime_error',...
+    error('HERBERT:parallel_config:not_available',...
         'Cluster %s is not available on the current system',...
         full_cl_name);
 end