diff --git a/sorc/ncep_post.fd/UPP_PHYSICS.f b/sorc/ncep_post.fd/UPP_PHYSICS.f
index 9845ec182..b4fdc069b 100644
--- a/sorc/ncep_post.fd/UPP_PHYSICS.f
+++ b/sorc/ncep_post.fd/UPP_PHYSICS.f
@@ -4880,7 +4880,7 @@ subroutine calchipsi (uwnd,vwnd,chi,psi)
 !
 ! poisson solver for psi and chi 
       psi=0.
-      ta=mpi_wtime()
+!      ta=mpi_wtime()
       do jjk=1,1000
       do jj=1,300 
         call exch(psi(ista_2l:iend_2u,jsta_2l:jend_2u))
@@ -4923,7 +4923,7 @@ subroutine calchipsi (uwnd,vwnd,chi,psi)
       enddo    ! end of jjk loop for psi
 !
       chi=0.
-      tb=mpi_wtime()
+!      tb=mpi_wtime()
       do jjk=1,1000
       do jj=1,300 
         call exch(chi(ista_2l:iend_2u,jsta_2l:jend_2u))