diff --git a/ci/cases/gfsv17/C384mx025_3DVarAOWCDA.yaml b/ci/cases/gfsv17/C384mx025_3DVarAOWCDA.yaml
index 4147249a4c..c47b53339e 100644
--- a/ci/cases/gfsv17/C384mx025_3DVarAOWCDA.yaml
+++ b/ci/cases/gfsv17/C384mx025_3DVarAOWCDA.yaml
@@ -8,7 +8,7 @@ arguments:
   resdetatmos: 384
   resdetocean: 0.25
   nens: 0
-  interval: 6
+  interval: 0
   start: warm
   comroot: {{ 'RUNTESTS' | getenv }}/COMROOT
   expdir: {{ 'RUNTESTS' | getenv }}/EXPDIR
diff --git a/parm/config/gfs/config.resources b/parm/config/gfs/config.resources
index e642082290..f17eb7cc50 100644
--- a/parm/config/gfs/config.resources
+++ b/parm/config/gfs/config.resources
@@ -502,16 +502,14 @@ case ${step} in
   "marineanlinit")
     walltime="00:10:00"
     ntasks=1
-    threads_per_task=1
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=${max_tasks_per_node}
     memory="24GB"
     ;;
 
   "prepoceanobs")
     walltime="00:10:00"
     ntasks=1
-    threads_per_task=1
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=${max_tasks_per_node}
     memory="48GB"
     ;;
 
@@ -519,7 +517,9 @@ case ${step} in
     npes=16
     ntasks=16
     case ${OCNRES} in
-      "025") ntasks=480;;
+      "025")
+        ntasks=480;;
+        memory="256GB"
       "050")  ntasks=16;;
       "100")  ntasks=16;;
       "500")  ntasks=16;;
@@ -529,9 +529,8 @@ case ${step} in
     esac
 
     walltime="00:30:00"
-    threads_per_task=1
     export is_exclusive=True
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=$(( max_tasks_per_node / 2 ))
     ;;
 
   "marineanlvar")
@@ -539,7 +538,7 @@ case ${step} in
     case ${OCNRES} in
       "025")
         ntasks=480
-        memory="96GB"
+        memory="256GB"
         ;;
       "050")
         ntasks=16
@@ -558,10 +557,9 @@ case ${step} in
         exit 4
     esac
 
-    walltime="00:15:00"
-    threads_per_task=1
+    walltime="00:30:00"
     export is_exclusive=True
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=$(( max_tasks_per_node / 2 ))
     ;;
 
   "ocnanalecen")
@@ -569,7 +567,7 @@ case ${step} in
     case ${OCNRES} in
       "025")
         ntasks=40
-        memory="96GB"
+        memory="256GB"
         ;;
       "050")
         ntasks=16
@@ -589,9 +587,8 @@ case ${step} in
     esac
 
     walltime="00:10:00"
-    threads_per_task=1
     export is_exclusive=True
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=$(( max_tasks_per_node / 2 ))
     ;;
 
   "marineanlletkf")
@@ -599,7 +596,7 @@ case ${step} in
     case ${OCNRES} in
       "025")
         ntasks=480
-        memory="96GB"
+        memory="256GB"
         ;;
       "050")
         ntasks=16
@@ -618,18 +615,16 @@ case ${step} in
         exit 4
     esac
 
-    walltime="00:10:00"
-    threads_per_task=1
+    walltime="00:30:00"
     export is_exclusive=True
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=$(( max_tasks_per_node / 2 ))
     ;;
 
 
   "marineanlchkpt")
     walltime="00:10:00"
     ntasks=1
-    threads_per_task=1
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=${max_tasks_per_node}
     case ${OCNRES} in
       "025")
         memory="128GB"
@@ -652,8 +647,7 @@ case ${step} in
   "marineanlfinal")
     walltime="00:30:00"
     ntasks=${max_tasks_per_node}
-    threads_per_task=1
-    tasks_per_node=$(( max_tasks_per_node / threads_per_task ))
+    tasks_per_node=${max_tasks_per_node}
     ;;
 
   "ocnanalvrfy")
diff --git a/sorc/gdas.cd b/sorc/gdas.cd
index a2ea3770ae..92750bedb5 160000
--- a/sorc/gdas.cd
+++ b/sorc/gdas.cd
@@ -1 +1 @@
-Subproject commit a2ea3770aeb9d4308bde51bb1d8c9c94cc9534c8
+Subproject commit 92750bedb5ec650fc77fdb305ae6021e23b841af
diff --git a/ush/python/pygfs/task/marine_analysis.py b/ush/python/pygfs/task/marine_analysis.py
index dd48c9f80f..31aece713e 100644
--- a/ush/python/pygfs/task/marine_analysis.py
+++ b/ush/python/pygfs/task/marine_analysis.py
@@ -206,7 +206,7 @@ def _prep_variational_yaml(self: Task) -> None:
         envconfig_jcb['PARMgfs'] = self.task_config.PARMgfs
         envconfig_jcb['NMEM_ENS'] = self.task_config.NMEM_ENS
         envconfig_jcb['berror_model'] = 'marine_background_error_static_diffusion'
-        if self.task_config.NMEM_ENS >= 3:
+        if self.task_config.NMEM_ENS >= 2:
             envconfig_jcb['berror_model'] = 'marine_background_error_hybrid_diffusion_diffusion'
         envconfig_jcb['DATA'] = self.task_config.DATA
         envconfig_jcb['OPREFIX'] = self.task_config.OPREFIX