Added code to print the LBANN version number in the print callback on

setup.  The version number is currently derived from the latest git tag.

Author: bvanessen

CMakeLists.txt

@@ -1,7 +1,11 @@
 project(LBANN)
 cmake_minimum_required(VERSION 2.8.12)
-set(LBANN_MAJOR_VERSION 0)
-set(LBANN_MINOR_VERSION 9)
+#set(LBANN_MAJOR_VERSION 0)
+#set(LBANN_MINOR_VERSION 91)
+
+# Get the git version so that we can embed it into the executable
+execute_process(COMMAND git describe --abbrev=7 --dirty --always --tags OUTPUT_VARIABLE GIT_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DLBANN_VERSION=\\\"${GIT_VERSION}\\\"" )
 
 ################################################################
 # Options

include/lbann/callbacks/lbann_callback_print.hpp

@@ -39,6 +39,7 @@ namespace lbann {
 class lbann_callback_print : public lbann_callback {
 public:
   lbann_callback_print(int _batch_interval = 1) : lbann_callback(_batch_interval) {}
+  void setup(model* m);
   void on_epoch_begin(model* m);
   void on_epoch_end(model* m);
   void on_test_end(model* m);

src/callbacks/lbann_callback_print.cpp

@@ -31,6 +31,15 @@
 
 namespace lbann {
 
+void lbann_callback_print::setup(model* m) {
+#ifdef LBANN_VERSION
+  lbann_comm* comm = m->get_comm();
+  if (comm->am_world_master()) {
+    std::cout << "Training with LLNL LBANN version " << LBANN_VERSION << endl;
+  }
+#endif
+}
+
 void lbann_callback_print::on_epoch_begin(model* m) {
   lbann_comm* comm = m->get_comm();
   if (comm->am_world_master()) {