diff --git a/gpu-opt/Makefile b/gpu-opt/Makefile
index 2a9668e..0e5d935 100644
--- a/gpu-opt/Makefile
+++ b/gpu-opt/Makefile
@@ -5,5 +5,5 @@ clean :
 	rm main
 
 queue : main
-	qsub -q mamba -l walltime=24:00:00 -l nodes=1:ppn=1:gpus=2 -d `pwd` run_gpu_opt.sh
+	qsub -q mamba -l walltime=24:00:00 -l nodes=1:ppn=1:gpus=1 -d `pwd` run_gpu_opt.sh
 
diff --git a/gpu-opt/run_gpu_opt.sh b/gpu-opt/run_gpu_opt.sh
index 29456c4..9376285 100644
--- a/gpu-opt/run_gpu_opt.sh
+++ b/gpu-opt/run_gpu_opt.sh
@@ -1,4 +1,4 @@
-IN='./main'
+MAIN='./main'
 
 echo "type,arg,nrels,secs,cosets"
 
diff --git a/gpu-slo/Makefile b/gpu-slo/Makefile
index 950fd34..8d087cc 100644
--- a/gpu-slo/Makefile
+++ b/gpu-slo/Makefile
@@ -5,5 +5,5 @@ clean :
 	rm main
 
 queue : main
-	qsub -q mamba -l walltime=24:00:00 -l nodes=1:ppn=1:gpus=2 -d `pwd` run_gpu.sh
+	qsub -q mamba -l walltime=24:00:00 -l nodes=1:ppn=1:gpus=1 -d `pwd` run_gpu.sh
 
diff --git a/gpu-slo/run_gpu.sh b/gpu-slo/run_gpu.sh
index 29456c4..9376285 100644
--- a/gpu-slo/run_gpu.sh
+++ b/gpu-slo/run_gpu.sh
@@ -1,4 +1,4 @@
-IN='./main'
+MAIN='./main'
 
 echo "type,arg,nrels,secs,cosets"