Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces Error: an illegal memory access was encountered launching kernel kClearForces