diff --git a/nexus/lib/machines.py b/nexus/lib/machines.py
index ca2cafb516..3ada3fcc5c 100644
--- a/nexus/lib/machines.py
+++ b/nexus/lib/machines.py
@@ -978,7 +978,7 @@ def process_job(self,job):
 
 
     def process_job_options(self,job):
-        job.run_options.add(np='-np '+str(job.processes))
+        job.run_options.add(np='--bind-to none -np '+str(job.processes))
     #end def process_job_options
 
 
diff --git a/nexus/tests/unit/test_machines.py b/nexus/tests/unit/test_machines.py
index cf92ea8b4d..b19cb64af4 100644
--- a/nexus/tests/unit/test_machines.py
+++ b/nexus/tests/unit/test_machines.py
@@ -533,10 +533,10 @@ def test_workstation_scheduling():
     assert(j.threads==2)
     assert(j.local)
     assert(j.processes==2)
-    assert(j.run_options.np=='-np 2')
+    assert(j.run_options.np=='--bind-to none -np 2')
     assert(j.batch_mode==False)
     init_job(j,dir=tpath) # imitate interaction w/ simulation object
-    assert(ws.write_job(j)=='export OMP_NUM_THREADS=2\nmpirun -np 2 echo run')
+    assert(ws.write_job(j)=='export OMP_NUM_THREADS=2\nmpirun --bind-to none -np 2 echo run')
 
     j = job(machine=ws.name,serial=True)
     assert(j.machine==ws.name)
@@ -544,7 +544,7 @@ def test_workstation_scheduling():
     assert(j.threads==1)
     assert(j.serial)
     assert(j.processes==1)
-    assert(j.run_options.np=='-np 1')
+    assert(j.run_options.np=='--bind-to none -np 1')
     assert(j.batch_mode==False)
     init_job(j,dir=tpath) # imitate interaction w/ simulation object
     assert(ws.write_job(j)=='export OMP_NUM_THREADS=1\necho run')