initialize profiler only if init is called and it is not in preload mode

dlio_profiler/logger.py

@@ -4,7 +4,8 @@
 DLIO_PROFILER_ENABLE = True if os.getenv("DLIO_PROFILER_ENABLE", '1') == '1' else False
 DLIO_PROFILER_INIT_PRELOAD = True if os.getenv("DLIO_PROFILER_INIT", 'PRELOAD') == 'PRELOAD' else False
 
-
+if DLIO_PROFILER_ENABLE:
+    import dlio_profiler_py as profiler
 
 from pathlib import Path
 import inspect
@@ -45,7 +46,6 @@ def initialize_log(logfile, data_dir, process_id):
                 os.makedirs(log_file.parent, exist_ok=True)
                 if os.path.isfile(log_file):
                     os.remove(log_file)
-                import dlio_profiler_py as profiler
             instance.logger = profiler
             instance.logger.initialize(f"{instance.logfile}", f"{data_dir}", process_id=process_id)
         return instance