adds option for fake mpi

python/dune/codegen/options.py

@@ -59,6 +59,7 @@ class CodegenGlobalOptionsArray(ImmutableRecord):
     use_likwid = CodegenOption(default=False, helpstr="Use likwid instead of own performance measurements.")
     use_sde = CodegenOption(default=False, helpstr="Use sde instead of own performance measurements.")
     autotune_google_benchmark = CodegenOption(default=False, helpstr="Use google-benchmark library for autotuning (when autotuning is activated).")
+    with_mpi = CodegenOption(default=True, helpstr="The module was configured with mpi")
 
     # Arguments that are mainly to be set by logic depending on other options
     max_vector_width = CodegenOption(default=256, helpstr=None)

python/dune/codegen/pdelab/driver/__init__.py

@@ -212,7 +212,10 @@ def name_initree():
 @preamble(section="init")
 def define_mpihelper(name):
     include_file("dune/common/parallel/mpihelper.hh", filetag="driver")
-    return "Dune::MPIHelper& {} = Dune::MPIHelper::instance(argc, argv);".format(name)
+    if get_option("with_mpi"):
+        return "Dune::MPIHelper& {} = Dune::MPIHelper::instance(argc, argv);".format(name)
+    else:
+        return "Dune::FakeMPIHelper& {} = Dune::FakeMPIHelper::instance(argc, argv);".format(name)
 
 
 def name_mpihelper():