diff --git a/src/cli/ace_helprun.cpp b/src/cli/ace_helprun.cpp
index ee9060e..47aea87 100644
--- a/src/cli/ace_helprun.cpp
+++ b/src/cli/ace_helprun.cpp
@@ -599,8 +599,8 @@ void HelpRun::settingsSetHelp()
 {
    // Initialize an enumeration and string list used to determine what setting set
    // command was given to get help on, if any.
-   enum {CUDA,OpenCL,Threads,Buffer,ChunkDir,ChunkPre,ChunkExt,Logging};
-   QStringList list {"cuda","opencl","threads","buffer","chunkdir","chunkpre","chunkext","logging"};
+   enum {CUDA,OpenCL,Threads,Buffer,ChunkDir,ChunkPre,ChunkExt,Logging,LogPort};
+   QStringList list {"cuda","opencl","threads","buffer","chunkdir","chunkpre","chunkext","logging","logport"};
 
    // Create an empty command string, setting it to this run's next command argument
    // is any exists.
@@ -637,6 +637,9 @@ void HelpRun::settingsSetHelp()
    case Logging:
       settingsSetLoggingHelp();
       break;
+   case LogPort:
+       settingsSetLogPortHelp();
+       break;
    default:
       {
          // If the setting set command was not recognized or was empty then print the basic
@@ -645,11 +648,12 @@ void HelpRun::settingsSetHelp()
          stream << "Command: " << _runName << " settings set <key> <value>\n"
                 << "Updates a persistent setting with the given key to the new given value.\n\n"
                 << "  key: The key of the setting that will be updated to a new value. Valid keys\n"
-                << "       are cuda, opencl, threads, buffer, chunkdir, chunkpre, chunkext, and\n"
-                << "       logging.\n\n"
+                << "       are cuda, opencl, threads, buffer, chunkdir, chunkpre, chunkext,\n"
+                << "       logging, and logport.\n\n"
                 << "value: The new value of the given setting.\n\n"
                 << "Help: " << _runName << " help settings set <key>\n"
-                << "Get help about a specific setting to set with the given key.\n\n";
+                << "Get help about a specific setting to set with the given key.\n\n"
+                << "Valid settings set keys:\n";
          break;
       }
    }
@@ -822,6 +826,20 @@ void HelpRun::settingsSetLoggingHelp()
 
 
 
+void HelpRun::settingsSetLogPortHelp()
+{
+    QTextStream stream(stdout);
+    stream << "Command: " << _runName << " settings set logport <port>\n"
+           << "Updates the logging port setting. The logging port is the port number the ACE\n"
+           << "logging system listens on for logging client connections.\n\n"
+           << "port: The new port number.\n\n";
+}
+
+
+
+
+
+
 /*!
  * Displays the help text for the settings list command.
  */
diff --git a/src/cli/ace_helprun.h b/src/cli/ace_helprun.h
index e24bc9b..c2628bf 100644
--- a/src/cli/ace_helprun.h
+++ b/src/cli/ace_helprun.h
@@ -44,6 +44,7 @@ namespace Ace
       void settingsSetChunkPreHelp();
       void settingsSetChunkExtHelp();
       void settingsSetLoggingHelp();
+      void settingsSetLogPortHelp();
       void settingsListHelp();
       /*!
        * The command arguments parsed out of the command line arguments of the main
diff --git a/src/cli/ace_settingsrun.cpp b/src/cli/ace_settingsrun.cpp
index 3b66236..26eeb1c 100644
--- a/src/cli/ace_settingsrun.cpp
+++ b/src/cli/ace_settingsrun.cpp
@@ -58,6 +58,7 @@ void SettingsRun::execute()
       stream << "           Chunk Prefix: " << settings.chunkPrefix() << "\n";
       stream << "        Chunk Extension: " << settings.chunkExtension() << "\n";
       stream << "                Logging: " << ( settings.loggingEnabled() ? QStringLiteral("on") : QStringLiteral("off") ) << "\n";
+      stream << "           Logging Port: " << settings.loggingPort() << "\n";
    }
 
    // Else call the setting parser method to determine which command was given.
@@ -197,8 +198,8 @@ void SettingsRun::set()
    }
 
    // Create an enumeration and string list used to determine the command given.
-   enum {Unknown=-1,CUDACom,OpenCLCom,Threads,Buffer,ChunkDir,ChunkPre,ChunkExt,Logging};
-   QStringList list {"cuda","opencl","threads","buffer","chunkdir","chunkpre","chunkext","logging"};
+   enum {Unknown=-1,CUDACom,OpenCLCom,Threads,Buffer,ChunkDir,ChunkPre,ChunkExt,Logging,LogPort};
+   QStringList list {"cuda","opencl","threads","buffer","chunkdir","chunkpre","chunkext","logging","logport"};
 
    // Determine which setting is to be set by the command given, calling the
    // appropriate method and popping this object's first command argument.
@@ -229,6 +230,9 @@ void SettingsRun::set()
    case Logging:
       setLogging();
       break;
+   case LogPort:
+       setLogPort();
+       break;
    case Unknown:
       {
          // The set command is not known so throw an exception informing the user.
@@ -565,6 +569,38 @@ void SettingsRun::setLogging()
 
 
 
+void SettingsRun::setLogPort()
+{
+    // Add the debug header.
+    EDEBUG_FUNC(this);
+
+    // Make sure there is a command argument to process.
+    if ( _command.size() < 1 )
+    {
+       E_MAKE_EXCEPTION(e);
+       e.setTitle(QObject::tr("Invalid argument"));
+       e.setDetails(QObject::tr("Settings set logport requires sub argument, exiting..."));
+       throw e;
+    }
+
+    bool ok;
+    int port {_command.first().toInt(&ok)};
+    if ( !ok || port < 0 || port > 65535 )
+    {
+       E_MAKE_EXCEPTION(e);
+       e.setTitle(QObject::tr("Invalid argument"));
+       e.setDetails(QObject::tr("Given logging port '%1' invalid, exiting...").arg(_command.first()));
+       throw e;
+    }
+
+    Ace::Settings::instance().setLoggingPort(port);
+}
+
+
+
+
+
+
 /*!
  * Executes the settings list command, parsing the first argument to determine
  * which specific list command is to be executed and calling the appropriate
diff --git a/src/cli/ace_settingsrun.h b/src/cli/ace_settingsrun.h
index 0e8db36..f8d2d3d 100644
--- a/src/cli/ace_settingsrun.h
+++ b/src/cli/ace_settingsrun.h
@@ -36,6 +36,7 @@ namespace Ace
       void setChunkPre();
       void setChunkExt();
       void setLogging();
+      void setLogPort();
       void list();
       void listCUDA();
       void listOpenCL();
diff --git a/src/core/ace_settings.h b/src/core/ace_settings.h
index d7edaaa..113f847 100644
--- a/src/core/ace_settings.h
+++ b/src/core/ace_settings.h
@@ -94,7 +94,7 @@ namespace Ace
       /*!
        * The default CUDA device index value.
        */
-      constexpr static int _cudaDeviceDefault {0};
+      constexpr static int _cudaDeviceDefault {-1};
       /*!
        * The default OpenCL platform index value.
        */