all worker ranks print only when verbosity > 1

spinifel/mpi/main.py

@@ -124,8 +124,14 @@ def main():
         run = None
         writer_rank = 0
 
-    # Setup logger for all worker ranks
-    logger = utils.Logger(contexts.is_worker, settings, myrank=comm.rank)
+    # Setup logger according to verbosity level
+    active_logger = False
+    if settings.verbosity > 1:
+        active_logger = contexts.is_worker
+    else:
+        if comm.rank == writer_rank:
+            active_logger = True
+    logger = utils.Logger(active_logger, settings, myrank=comm.rank)
     logger.log("In MPI main")
     if settings.use_psana:
         logger.log("Using psana")
@@ -136,6 +142,9 @@ def main():
     logger.log(f"writerrank     : {writer_rank}")
     logger.log(f"#img/rank      : {N_images_per_rank}")
 
+    from mpi4py import MPI
+    logger.log(f"host           : {MPI.Get_processor_name()}")
+
     # Skip this data saving and ac calculation in test mode
     generation = 0
     reference_dict = {}