Check number of particle worlds during restart.

source/simulator/checkpoint_restart.cc

@@ -97,6 +97,7 @@ namespace aspect
  oa << parameters.names_of_compositional_fields;
  oa << parameters.normalized_fields;
  oa << parameters.mesh_deformation_enabled;
+ oa << parameters.n_particle_worlds;
  }
 
 
@@ -260,6 +261,14 @@ namespace aspect
  "These need to be the same during restarting "
  "from a checkpoint."));
 
+ unsigned int n_particle_worlds;
+ ia >> n_particle_worlds;
+ AssertThrow (n_particle_worlds == parameters.n_particle_worlds,
+ ExcMessage ("The number of particle worlds that were stored "
+ "in the checkpoint file is not the same as the one "
+ "you currently set in your input file. "
+ "These need to be the same during restarting "
+ "from a checkpoint."));
  }
  }
 

source/simulator/parameters.cc

@@ -359,7 +359,7 @@ namespace aspect
  "Name of the world builder file. If empty, the world builder is not initialized.");
 
  prm.declare_entry ("Number of particle worlds", "1",
- Patterns::Integer(0,1),
+ Patterns::Integer(0),
  "The number of particle worlds to be created. The maximum number of particle worlds "
  "is set by the CMake variable `ASPECT_MAX_NUM_PARTICLE_WORLDS` and is by default 2.");