Do not expect that the default config file is stored in parallel to the main

apps/gpu/LBM/DrivenCavityMultiGPU/DrivenCavityMultiGPU.cpp

@@ -516,7 +516,7 @@ int main(int argc, char *argv[])
     if (argv != NULL) {
 
         try {
-            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, __FILE__, "configDrivenCavityMultiGPU.txt");
+            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, "./apps/gpu/LBM/DrivenCavityMultiGPU/configDrivenCavityMultiGPU.txt");
             multipleLevel(config);
 
             //////////////////////////////////////////////////////////////////////////

apps/gpu/LBM/MusselOyster/MusselOyster.cpp

@@ -583,7 +583,7 @@ int main(int argc, char *argv[])
     if (argv != NULL) {
 
         try {
-            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, __FILE__, "configMusselOyster.txt");
+            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, "./apps/gpu/LBM/MusselOyster/configMusselOyster.txt");
             multipleLevel(config);
 
             //////////////////////////////////////////////////////////////////////////

apps/gpu/LBM/SphereGPU/Sphere.cpp

@@ -102,7 +102,7 @@ int main(int argc, char *argv[])
         GridScalingFactory scalingFactory = GridScalingFactory();
         vf::basics::ConfigurationFile config;
         if (useConfigFile) {
-            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, __FILE__, "config.txt");
+            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, "./apps/gpu/LBM/SphereGPU/config.txt");
             para = std::make_shared<Parameter>(&config);
         } else {
             para = std::make_shared<Parameter>();

apps/gpu/LBM/SphereScaling/SphereScaling.cpp

@@ -657,7 +657,7 @@ int main(int argc, char *argv[])
     if (argv != NULL) {
 
         try {
-            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, __FILE__, "config.txt");
+            vf::basics::ConfigurationFile config = vf::basics::ConfigurationFile::loadConfig(argc, argv, "./apps/gpu/LBM/SphereScaling/config.txt");
             multipleLevel(config);
 
             //////////////////////////////////////////////////////////////////////////

src/basics/config/ConfigurationFile.h

@@ -70,21 +70,18 @@ public:
    template<class T>
    T getValue(const std::string& key, T defaultValue) const;
 
-   static ConfigurationFile loadConfig(int argc, char *argv[], std::filesystem::path configPath, std::string defaultConfigName = "config.txt")
+   static ConfigurationFile loadConfig(int argc, char *argv[], std::filesystem::path configPath = "./config.txt")
    {
-      // the config file's default name can be replaced by passing a command line argument
-
-      std::string configName = defaultConfigName;
+      // the config file's default path can be replaced by passing a command line argument
 
       if (argc > 1) 
       {
-         configName = argv[1];
-         VF_LOG_INFO("Using configFile command line argument: {}", configName);
+         configPath = argv[1];
+         VF_LOG_INFO("Using command line argument for config path: {}", configPath.string());
       } else {
-         VF_LOG_INFO("Using default config name: {}", configName);
+         VF_LOG_INFO("Using default config path: {}", configPath.string());
       }
 
-      configPath.replace_filename(configName);
       vf::basics::ConfigurationFile config;
       config.load(configPath.string());
       return config;