diff --git a/systems/Crusher/dwf8.slurm b/systems/Crusher/dwf8.slurm
index 58686636..30e83fff 100644
--- a/systems/Crusher/dwf8.slurm
+++ b/systems/Crusher/dwf8.slurm
@@ -14,8 +14,8 @@ DIR=.
 module list
 export MPIR_CVAR_GPU_EAGER_DEVICE_MEM=0
 export MPICH_GPU_SUPPORT_ENABLED=1
-#export MPICH_SMP_SINGLE_COPY_MODE=XPMEM
-export MPICH_SMP_SINGLE_COPY_MODE=NONE
+export MPICH_SMP_SINGLE_COPY_MODE=XPMEM
+#export MPICH_SMP_SINGLE_COPY_MODE=NONE
 #export MPICH_SMP_SINGLE_COPY_MODE=CMA
 export OMP_NUM_THREADS=1