mpi/examples: only run 2 nodes quick-check is enabled

mpi/examples/Makefile.am

@@ -26,11 +26,17 @@ LOADER_BIN		=	$(abs_top_builddir)/mpi/tests/$(LOADER)
 loader_SOURCES		=	../../tests/loader.c
 endif
 
+if STARPU_QUICK_CHECK
+MPI			=	$(MPIEXEC) -np 2
+else
+MPI			=	$(MPIEXEC) -np 4
+endif
+
 if STARPU_HAVE_AM111
 TESTS_ENVIRONMENT	=	top_builddir="$(abs_top_builddir)" top_srcdir="$(abs_top_srcdir)"
-LOG_COMPILER	 	=	$(MPIEXEC) -np 4 $(LOADER_BIN)
+LOG_COMPILER	 	=	$(MPI) $(LOADER_BIN)
 else
-TESTS_ENVIRONMENT 	=	top_builddir="$(abs_top_builddir)" top_srcdir="$(abs_top_srcdir)" $(MPIEXEC) -np 4
+TESTS_ENVIRONMENT 	=	top_builddir="$(abs_top_builddir)" top_srcdir="$(abs_top_srcdir)" $(MPI) $(LOADER_BIN)
 endif
 
 if STARPU_MPI_CHECK