diff --git a/contrib/experiments/interpretation/penobscot/local/logging.conf b/contrib/experiments/interpretation/penobscot/local/logging.conf
deleted file mode 100644
index 56334fc4..00000000
--- a/contrib/experiments/interpretation/penobscot/local/logging.conf
+++ /dev/null
@@ -1,34 +0,0 @@
-[loggers]
-keys=root,__main__,event_handlers
-
-[handlers]
-keys=consoleHandler
-
-[formatters]
-keys=simpleFormatter
-
-[logger_root]
-level=INFO
-handlers=consoleHandler
-
-[logger___main__]
-level=INFO
-handlers=consoleHandler
-qualname=__main__
-propagate=0
-
-[logger_event_handlers]
-level=INFO
-handlers=consoleHandler
-qualname=event_handlers
-propagate=0
-
-[handler_consoleHandler]
-class=StreamHandler
-level=INFO
-formatter=simpleFormatter
-args=(sys.stdout,)
-
-[formatter_simpleFormatter]
-format=%(asctime)s - %(name)s - %(levelname)s - %(message)s
-
diff --git a/tests/cicd/main_build.yml b/tests/cicd/main_build.yml
index bfc9b026..f1a33f61 100644
--- a/tests/cicd/main_build.yml
+++ b/tests/cicd/main_build.yml
@@ -91,6 +91,7 @@ jobs:
 
 ###################################################################################################
 # Stage 3: Dutch F3 patch models: deconvnet, unet, HRNet patch depth, HRNet section depth
+# CAUTION: reverted these builds to single-GPU leaving new multi-GPU code in to be reverted later
 ###################################################################################################
 
 - job: dutchf3_patch
@@ -113,30 +114,30 @@ jobs:
       dir=$(mktemp -d)
 
       pids=
-      export CUDA_VISIBLE_DEVICES=0
+      # export CUDA_VISIBLE_DEVICES=0
       { python train.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' 'TRAIN.END_EPOCH' 1 'TRAIN.SNAPSHOTS' 1 \
                       'TRAIN.DEPTH' 'none' \
                       'OUTPUT_DIR' 'output' 'TRAIN.MODEL_DIR' 'no_depth' \
-                      --cfg=configs/patch_deconvnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                      --cfg=configs/patch_deconvnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=1
+      # export CUDA_VISIBLE_DEVICES=1
       { python train.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' 'TRAIN.END_EPOCH' 1 'TRAIN.SNAPSHOTS' 1 \
                       'TRAIN.DEPTH' 'section' \
                       'OUTPUT_DIR' 'output' 'TRAIN.MODEL_DIR' 'section_depth' \
-                      --cfg=configs/unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                      --cfg=configs/unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=2
+      # export CUDA_VISIBLE_DEVICES=2
       { python train.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' 'TRAIN.END_EPOCH' 1 'TRAIN.SNAPSHOTS' 1 \
                       'TRAIN.DEPTH' 'section' \
                       'OUTPUT_DIR' 'output' 'TRAIN.MODEL_DIR' 'section_depth' \
-                      --cfg=configs/seresnet_unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                      --cfg=configs/seresnet_unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=3
+      # export CUDA_VISIBLE_DEVICES=3
       { python train.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' 'TRAIN.END_EPOCH' 1 'TRAIN.SNAPSHOTS' 1 \
                       'TRAIN.DEPTH' 'section' \
                       'MODEL.PRETRAINED' '/home/alfred/models/hrnetv2_w48_imagenet_pretrained.pth' \
                       'OUTPUT_DIR' 'output' 'TRAIN.MODEL_DIR' 'section_depth' \
-                      --cfg=configs/hrnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                      --cfg=configs/hrnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
 
       wait $pids || exit 1
@@ -157,16 +158,16 @@ jobs:
       dir=$(mktemp -d)
 
       pids=
-      export CUDA_VISIBLE_DEVICES=0
+      # export CUDA_VISIBLE_DEVICES=0
       # find the latest model which we just trained
       model_dir=$(ls -td output/patch_deconvnet/no_depth/* | head -1)
       model=$(ls -t ${model_dir}/*.pth | head -1)
       # try running the test script
       { python test.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' \
                      'TEST.MODEL_PATH' ${model} \
-                     --cfg=configs/patch_deconvnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                     --cfg=configs/patch_deconvnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=1
+      # export CUDA_VISIBLE_DEVICES=1
       # find the latest model which we just trained
       model_dir=$(ls -td output/unet/section_depth/* | head -1)
       model=$(ls -t ${model_dir}/*.pth | head -1)
@@ -174,9 +175,9 @@ jobs:
       # try running the test script
       { python test.py  'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' \
                       'TEST.MODEL_PATH' ${model} \
-                      --cfg=configs/unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                      --cfg=configs/unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=2
+      # export CUDA_VISIBLE_DEVICES=2
       # find the latest model which we just trained
       model_dir=$(ls -td output/seresnet_unet/section_depth/* | head -1)
       model=$(ls -t ${model_dir}/*.pth | head -1)
@@ -184,9 +185,9 @@ jobs:
       # try running the test script
       { python test.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' \
                      'TEST.MODEL_PATH'  ${model} \
-                     --cfg=configs/seresnet_unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                     --cfg=configs/seresnet_unet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
-      export CUDA_VISIBLE_DEVICES=3
+      # export CUDA_VISIBLE_DEVICES=3
       # find the latest model which we just trained
       model_dir=$(ls -td output/hrnet/section_depth/* | head -1)
       model=$(ls -t ${model_dir}/*.pth | head -1)
@@ -195,7 +196,7 @@ jobs:
       { python test.py 'DATASET.ROOT' '/home/alfred/data_dynamic/dutch_f3/data' \
                      'MODEL.PRETRAINED' '/home/alfred/models/hrnetv2_w48_imagenet_pretrained.pth' \
                      'TEST.MODEL_PATH'  ${model} \
-                     --cfg=configs/hrnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; } &
+                     --cfg=configs/hrnet.yaml --debug ; echo "$?" > "$dir/$BASHPID"; }
       pids+=" $!"
 
       # wait for completion