diff --git a/tests/rt.conf b/tests/rt.conf
index 07fa091e1b..6e7ce6aa91 100644
--- a/tests/rt.conf
+++ b/tests/rt.conf
@@ -29,6 +29,7 @@ COMPILE | s2swa_32bit_pdlib  | intel | -DAPP=S2SWA -D32BIT=ON -DCCPP_SUITES=FV3_
 RUN | cpld_control_gfsv17                               | - noaacloud                          | baseline |
 RUN | cpld_control_gfsv17_iau                           | - noaacloud                          | baseline | cpld_control_gfsv17
 RUN | cpld_restart_gfsv17                               | - noaacloud                          |          | cpld_control_gfsv17
+RUN | cpld_restart_gfsv17_iau                           | - noaacloud                          |          | cpld_control_gfsv17_iau
 RUN | cpld_mpi_gfsv17                                   | - noaacloud                          |          |
 
 #SFS
diff --git a/tests/tests/cpld_restart_gfsv17_iau b/tests/tests/cpld_restart_gfsv17_iau
new file mode 100644
index 0000000000..ee1440194b
--- /dev/null
+++ b/tests/tests/cpld_restart_gfsv17_iau
@@ -0,0 +1,165 @@
+#
+#  cpld_control GFSv17 test with IAU
+#
+
+export TEST_DESCR="Fully coupled FV3-CCPP-MOM6-CICE-CMEPS-WW3 system - C96MX100 with IAU - restart"
+
+export CNTL_DIR=cpld_control_gfsv17_iau
+
+export LIST_FILES="sfcf024.nc \
+                   atmf024.nc \
+                   GFSFLX.GrbF24 \
+                   GFSPRS.GrbF24 \
+                   RESTART/20210323.120000.coupler.res \
+                   RESTART/20210323.120000.fv_core.res.nc \
+                   RESTART/20210323.120000.fv_core.res.tile1.nc \
+                   RESTART/20210323.120000.fv_core.res.tile2.nc \
+                   RESTART/20210323.120000.fv_core.res.tile3.nc \
+                   RESTART/20210323.120000.fv_core.res.tile4.nc \
+                   RESTART/20210323.120000.fv_core.res.tile5.nc \
+                   RESTART/20210323.120000.fv_core.res.tile6.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile1.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile2.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile3.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile4.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile5.nc \
+                   RESTART/20210323.120000.fv_srf_wnd.res.tile6.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile1.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile2.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile3.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile4.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile5.nc \
+                   RESTART/20210323.120000.fv_tracer.res.tile6.nc \
+                   RESTART/20210323.120000.phy_data.tile1.nc \
+                   RESTART/20210323.120000.phy_data.tile2.nc \
+                   RESTART/20210323.120000.phy_data.tile3.nc \
+                   RESTART/20210323.120000.phy_data.tile4.nc \
+                   RESTART/20210323.120000.phy_data.tile5.nc \
+                   RESTART/20210323.120000.phy_data.tile6.nc \
+                   RESTART/20210323.120000.sfc_data.tile1.nc \
+                   RESTART/20210323.120000.sfc_data.tile2.nc \
+                   RESTART/20210323.120000.sfc_data.tile3.nc \
+                   RESTART/20210323.120000.sfc_data.tile4.nc \
+                   RESTART/20210323.120000.sfc_data.tile5.nc \
+                   RESTART/20210323.120000.sfc_data.tile6.nc \
+                   RESTART/20210323.120000.MOM.res.nc \
+                   RESTART/iced.2021-03-23-43200.nc \
+                   RESTART/ufs.cpld.cpl.r.2021-03-23-43200.nc \
+                   MOM6_OUTPUT/ocn_2021_03_23_09.nc \
+                   history/iceh_06h.2021-03-23-43200.nc \
+                   20210323.120000.out_pnt.ww3 \
+                   20210323.120000.out_grd.ww3 "
+
+export_fv3
+export_cpl
+
+export CPLCHM=.false.
+export DNATS=0
+export OUTPUT_GRID="gaussian_grid"
+export WRITE_DOPOST=.true.
+
+export FHROT=18
+export FHMAX=30
+export RESTART_N=3
+export RESTART_INTERVAL="${RESTART_N} -1"
+RESTHOUR=$(( ${FHROT} + ${SHOUR} ))
+RESTSDAY=$SDAY
+echo "RESTHOUR=$RESTHOUR,RESTSDAY=$RESTSDAY"
+if [[ $RESTHOUR -ge 24 ]]; then
+  echo "compute resthour"
+  RESTHOUR=$(( ${FHROT} + ${SHOUR} - 24 ))
+  echo "compute restday"
+  RESTSDAY=$(( ${SDAY} + 1 ))
+fi
+echo "2RESTHOUR=$RESTHOUR,RESTSDAY=$RESTSDAY"
+RESTSEC=$(( ${RESTHOUR} * 3600 ))
+echo "RESTHOUR=$RESTHOUR,RESTSDAY=$RESTSDAY,RESTSEC=$RESTSEC"
+export RESTART_FILE_PREFIX="${SYEAR}${SMONTH}${RESTSDAY}.$(printf "%02d" ${RESTHOUR})0000"
+export RESTART_FILE_SUFFIX_SECS="${SYEAR}-${SMONTH}-${RESTSDAY}-$(printf "%05d" ${RESTSEC})"
+echo "RESTART_FILE_PREFIX=$RESTART_FILE_PREFIX"
+echo "RESTART_FILE_SUFFIX_SECS=$RESTART_FILE_SUFFIX_SECS"
+
+# ATM warm start
+export WARM_START=.true.
+export MAKE_NH=.false.
+export NA_INIT=0
+export EXTERNAL_IC=.false.
+export NGGPS_IC=.false.
+export MOUNTAIN=.true.
+
+# ICE warm start
+export CICE_RUNTYPE=continue
+export RUNTYPE=continue
+export CICE_USE_RESTART_TIME=.true.
+
+# MOM6 warm start
+export MOM6_RESTART_SETTING=r
+
+export MOM6_TOPOEDITS=ufs.topo_edits_011818.nc
+export MOM6_ALLOW_LANDMASK_CHANGES=True
+export eps_imesh=2.5e-1
+export CICE_DIAGFREQ=`expr $((FHMAX-$FHROT)) \* 3600 / $DT_CICE`
+
+export INPES=$INPES_cpl_unstr
+export JNPES=$JNPES_cpl_unstr
+export WRTTASK_PER_GROUP=$(( WPG_cpl_unstr * THRD_cpl_unstr ))
+
+OCN_tasks=$OCN_tasks_cpl_unstr
+ICE_tasks=$ICE_tasks_cpl_unstr
+WAV_tasks=$WAV_tasks_cpl_unstr
+
+export atm_omp_num_threads=$THRD_cpl_unstr
+export med_omp_num_threads=$atm_omp_num_threads
+
+# UGWP1
+export GWD_OPT=2
+export CDMBWD=20.0,2.5,1.0,1.0
+export DO_UGWP_V1=.true.
+export KNOB_UGWP_VERSION=1
+export KNOB_UGWP_NSLOPE=1
+export DO_UGWP_V0=.false.
+export DO_GSL_DRAG_LS_BL=.true.
+export DO_GSL_DRAG_SS=.true.
+export DO_GSL_DRAG_TOFD=.true.
+export DO_UGWP_V1_OROG_ONLY=.false.
+export DO_UGWP_V0_NST_ONLY=.false.
+export LDIAG_UGWP=.false.
+export KNOB_UGWP_DOKDIS=2
+export KNOB_UGWP_NDX4LH=4
+
+export WW3_DOMAIN=global_270k
+export MESH_WAV=mesh.${WW3_DOMAIN}.nc
+export WW3_MODDEF=mod_def.exp.${WW3_DOMAIN}
+
+export FV3_RUN=cpld_control_run.IN
+export CCPP_SUITE=FV3_GFS_v17_coupled_p8_ugwpv1
+export FIELD_TABLE=field_table_thompson_noaero_tke_progsigma
+export DIAG_TABLE=diag_table_cpld.IN
+export INPUT_NML=global_control.nml.IN
+export UFS_CONFIGURE=ufs.configure.s2sw.IN
+
+#GFSv17	settings
+export PROGSIGMA=.true.
+export IOPT_DIAG=1
+
+#IAU
+export CHOUR=12
+export IAU_OFFSET=6
+#export IAU_DELTHRS=6
+#export IAUFHRS='3 6 9'
+#export IAU_INC_FILES="'fv_increment3.nc','fv_increment6.nc','fv_increment9.nc'"
+#export ODA_INCUPD="True"
+#export ODA_INCUPD_UV="True"
+
+if [[ $MACHINE_ID = hera ]] && [[ $RT_COMPILER = gnu ]]; then
+  WLCLK=40
+fi
+
+# HR4 GFSv17 GWD update
+export DO_UGWP_V0=.false.
+export DO_UGWP_V1=.true.
+export DO_GSL_DRAG_LS_BL=.true.
+export DO_GWD_OPT_PSL=.true.
+export DO_GSL_DRAG_SS=.false.
+export DO_GSL_DRAG_TOFD=.true.
+