diff --git a/Grid/lattice/Lattice_base.h b/Grid/lattice/Lattice_base.h
index 1aefd9c1..70a57ae5 100644
--- a/Grid/lattice/Lattice_base.h
+++ b/Grid/lattice/Lattice_base.h
@@ -236,11 +236,18 @@ public:
   template<class sobj> inline Lattice<vobj> & operator = (const sobj & r){
     vobj vtmp;
     vtmp = r;
+#if 1
+    auto me  = View(CpuWrite);
+    thread_for(ss,me.size(),{
+       me[ss]= r;
+      });
+#else    
     auto me  = View(AcceleratorWrite);
     accelerator_for(ss,me.size(),vobj::Nsimd(),{
 	auto stmp=coalescedRead(vtmp);
 	coalescedWrite(me[ss],stmp);
     });
+#endif    
     me.ViewClose();
     return *this;
   }