diff --git a/Snakefile b/Snakefile
index 26cfc5d0427ea6f40f10cedbe5425a30822dc1fd..151d30d9923ccf8f72b0d0f447f5d79a90cb3772 100644
--- a/Snakefile
+++ b/Snakefile
@@ -18,7 +18,8 @@ rule warmup_run:
         "warmup/{DETECTOR_CONFIG}.edm4hep.root",
     message: "Ensuring that calibrations/fieldmaps are available for {wildcards.DETECTOR_CONFIG}"
     shell: """
-ddsim \
+set -m # monitor mode to prevent lingering processes
+exec ddsim \
   --runType batch \
   --numberOfEvents 1 \
   --compactFile "$DETECTOR_PATH/{wildcards.DETECTOR_CONFIG}.xml" \
diff --git a/benchmarks/backgrounds/Snakefile b/benchmarks/backgrounds/Snakefile
index 7334da418e009d2eda93eb881380de27c08f03d3..ee6d54c4e97a656a829c990236df9c63bca84eaf 100644
--- a/benchmarks/backgrounds/Snakefile
+++ b/benchmarks/backgrounds/Snakefile
@@ -13,7 +13,8 @@ rule backgrounds_sim:
         N_EVENTS=100
     shell:
         """
-ddsim \
+set -m # monitor mode to prevent lingering processes
+exec ddsim \
   --runType batch \
   --part.minimalKineticEnergy 100*GeV  \
   --filter.tracker edep0 \
@@ -39,7 +40,7 @@ rule backgrounds_ecal_backwards:
     threads: workflow.cores
     shell:
         """
-set -m # monitor mode to prevent lingering shells
+set -m # monitor mode to prevent lingering processes
 cleanup() {{
   echo Cleaning up
   kill $WORKER_PID $SCHEDULER_PID
diff --git a/benchmarks/barrel_ecal/Snakefile b/benchmarks/barrel_ecal/Snakefile
index 707c2a89166b888dd5374548db1a9f24d9f66938..88bfdba2f287b52045e04322257480788385031a 100644
--- a/benchmarks/barrel_ecal/Snakefile
+++ b/benchmarks/barrel_ecal/Snakefile
@@ -26,7 +26,8 @@ rule emcal_barrel_particles:
         "{DETECTOR_CONFIG}/sim_output/sim_emcal_barrel_{PARTICLE}_energies{E_MIN}_{E_MAX}.edm4hep.root"
     shell:
         """
-ddsim \
+set -m # monitor mode to prevent lingering processes
+exec ddsim \
    --runType batch \
    -v WARNING \
    --part.minimalKineticEnergy 0.5*GeV  \
diff --git a/benchmarks/ecal_gaps/Snakefile b/benchmarks/ecal_gaps/Snakefile
index 91ffa7c2101f1db69550e5ffba843469b65c0bca..02190cdaa4e58bbb0c1305f4f606e701df749c42 100644
--- a/benchmarks/ecal_gaps/Snakefile
+++ b/benchmarks/ecal_gaps/Snakefile
@@ -18,7 +18,8 @@ rule ecal_gaps_sim:
         N_EVENTS=1000
     shell:
         """
-ddsim \
+set -m # monitor mode to prevent lingering processes
+exec ddsim \
   --runType batch \
   --enableGun \
   --steeringFile "{input.steering_file}" \
@@ -41,7 +42,8 @@ rule ecal_gaps_recon:
     wildcard_constraints:
         INDEX="\d{4}",
     shell: """
-env DETECTOR_CONFIG={wildcards.DETECTOR_CONFIG} \
+set -m # monitor mode to prevent lingering processes
+exec env DETECTOR_CONFIG={wildcards.DETECTOR_CONFIG} \
   eicrecon {input} -Ppodio:output_file={output} \
   -Ppodio:output_include_collections=EcalEndcapNRecHits,EcalBarrelScFiRecHits,EcalBarrelImagingRecHits,EcalEndcapPRecHits,MCParticles
 """
diff --git a/benchmarks/tracking_performances/Snakefile b/benchmarks/tracking_performances/Snakefile
index 14ae80b31db5b6371a102631d2f8449d8e8abe5c..df73d1e0dc8fe367073f4dc0ad90c400d4d2f4b0 100644
--- a/benchmarks/tracking_performances/Snakefile
+++ b/benchmarks/tracking_performances/Snakefile
@@ -15,7 +15,8 @@ rule tracking_performance_sim:
         N_EVENTS=10000
     shell:
         """
-ddsim \
+set -m # monitor mode to prevent lingering processes
+exec ddsim \
   --runType batch \
   --enableGun \
   --steeringFile "{input.steering_file}" \
@@ -38,7 +39,8 @@ rule tracking_performance_recon:
     wildcard_constraints:
         INDEX="\d{4}",
     shell: """
-env DETECTOR_CONFIG={wildcards.DETECTOR_CONFIG} \
+set -m # monitor mode to prevent lingering processes
+exec env DETECTOR_CONFIG={wildcards.DETECTOR_CONFIG} \
   eicrecon {input} -Ppodio:output_file={output} \
   -Ppodio:output_include_collections=MCParticles,CentralCKFTrajectories,CentralCKFTrackParameters,CentralCKFSeededTrackParameters,CentralTrackVertices
 """