Minor changes according to the comments by Nori

MathLib/LinAlg/PETSc/PETScLinearSolver.cpp

@@ -25,7 +25,11 @@ PETScLinearSolver::PETScLinearSolver(PETScMatrix &A, const std::string &prefix)
     KSPGetPC(_solver, &_pc);
 
     //
-    KSPSetOptionsPrefix(_solver, prefix.c_str());    
+    if ( !prefix.empty() ) 
+    {       
+       KSPSetOptionsPrefix(_solver, prefix.c_str());
+    }
+               
     KSPSetFromOptions(_solver);  // set running time option
 }
 

Tests/FileIO/TestBoostXmlCndInterface.cpp

@@ -27,6 +27,13 @@
 
 TEST(FileIO, TestBoostXmlCndInterfaceUsingBoundaryCondition)
 {
+#if defined(USE_PETSC) || defined(USE_MPI)
+	int mrank;
+	MPI_Comm_rank(PETSC_COMM_WORLD, &mrank);
+	if(mrank == 0)
+	{
+#endif
+
 	// setup test data
 	std::string geometry_name("GeometryForBC");
 	const std::string bc_pnt_name("bc_pnt");
@@ -116,4 +123,8 @@ TEST(FileIO, TestBoostXmlCndInterfaceUsingBoundaryCondition)
 		conds[1]->getProcessDistributionType());
 	ASSERT_EQ(conds[0]->getDisValues().size(), conds[1]->getDisValues().size());
 	ASSERT_NEAR(conds[0]->getDisValues()[0], conds[1]->getDisValues()[0], std::numeric_limits<double>::epsilon());
+	
+#if defined(USE_PETSC) || defined(USE_MPI)
+	}
+#endif	
 }

Tests/FileIO/TestXmlGmlReader.cpp

@@ -26,10 +26,16 @@
 // GeoLib
 #include "Polyline.h"
 
-
 TEST(FileIO, XmlGmlWriterReaderTest)
 {
-	// Writer test
+#if defined(USE_PETSC) || defined(USE_MPI)
+	int mrank;
+	MPI_Comm_rank(PETSC_COMM_WORLD, &mrank);
+	if(mrank == 0)
+	{
+#endif
+
+    // Writer test
 	std::string test_data_file(std::string(SOURCEPATH).append("/Tests/FileIO/xmlgmltestdata.gml"));
 
 	ProjectData project;
@@ -121,4 +127,10 @@ TEST(FileIO, XmlGmlWriterReaderTest)
 	boost::filesystem::remove(test_data_file);
 	test_data_file += ".md5";
 	boost::filesystem::remove(test_data_file);
+	
+#if defined(USE_PETSC) || defined(USE_MPI)
+	}
+#endif
+	
 }
+#endif