diff --git a/decoder/src/MacaonDecode.cpp b/decoder/src/MacaonDecode.cpp
index 22e715f505d66ed9d41c32894d10d3d8395f405f..074c6ad9c72a09c5a08dd6fb487700cfe255988c 100644
--- a/decoder/src/MacaonDecode.cpp
+++ b/decoder/src/MacaonDecode.cpp
@@ -129,7 +129,7 @@ int MacaonDecode::main()
     {
       NeuralNetworkImpl::setDevice(torch::kCPU);
       machine.to(NeuralNetworkImpl::getDevice());
-      std::for_each(std::execution::par, configs.begin(), configs.end(),
+      std::for_each(std::execution::seq, configs.begin(), configs.end(),
         [&decoder, debug, printAdvancement, beamSize, beamThreshold](BaseConfig & config)
         {
           decoder.decode(config, beamSize, beamThreshold, debug, printAdvancement);
diff --git a/trainer/src/MacaonTrain.cpp b/trainer/src/MacaonTrain.cpp
index d760d1f9e92cf46d2731ea57d47d7f04d76a2c6c..98467837dd2e8abb128dd283d6f7f51265937b33 100644
--- a/trainer/src/MacaonTrain.cpp
+++ b/trainer/src/MacaonTrain.cpp
@@ -329,7 +329,7 @@ int MacaonTrain::main()
       {
         NeuralNetworkImpl::setDevice(torch::kCPU);
         machine.to(NeuralNetworkImpl::getDevice());
-        std::for_each(std::execution::par, devConfigs.begin(), devConfigs.end(),
+        std::for_each(std::execution::seq, devConfigs.begin(), devConfigs.end(),
           [&decoder, debug, printAdvancement](BaseConfig & devConfig)
           {
             decoder.decode(devConfig, 1, 0.0, debug, printAdvancement);
diff --git a/trainer/src/Trainer.cpp b/trainer/src/Trainer.cpp
index aaef532a65c87e973603afd0a770823ca06bbc30..da9fb730ca33d601758439495a8e1bc233f15109 100644
--- a/trainer/src/Trainer.cpp
+++ b/trainer/src/Trainer.cpp
@@ -55,7 +55,7 @@ void Trainer::extractExamples(std::vector<SubConfig> & configs, bool debug, std:
 
   NeuralNetworkImpl::setDevice(torch::kCPU);
   machine.to(NeuralNetworkImpl::getDevice());
-  std::for_each(std::execution::par, configs.begin(), configs.end(),
+  std::for_each(std::execution::seq, configs.begin(), configs.end(),
     [this, maxNbExamplesPerFile, &examplesPerState, &totalNbExamples, debug, memcheck, dynamicOracle, explorationThreshold, dir, epoch, &examplesMutex](SubConfig & config)
     {
       config.addPredicted(machine.getPredicted());