diff --git a/cime_config/config_pes.xml b/cime_config/config_pes.xml
index 827aba4b..e51861bc 100644
--- a/cime_config/config_pes.xml
+++ b/cime_config/config_pes.xml
@@ -205,14 +205,14 @@
       <pes pesize="M" compset="_DATM.*_BLOM.*%ECO">
         <comment>none</comment>
         <ntasks>
-          <ntasks_atm>128</ntasks_atm>
-          <ntasks_rof>128</ntasks_rof>
-          <ntasks_ice>128</ntasks_ice>
-          <ntasks_ocn>374</ntasks_ocn>
-          <ntasks_cpl>128</ntasks_cpl>
-          <ntasks_lnd>128</ntasks_lnd>
-          <ntasks_glc>128</ntasks_glc>
-          <ntasks_wav>128</ntasks_wav>
+          <ntasks_atm>1</ntasks_atm>
+          <ntasks_rof>1</ntasks_rof>
+          <ntasks_ice>80</ntasks_ice>
+          <ntasks_ocn>431</ntasks_ocn>
+          <ntasks_cpl>81</ntasks_cpl>
+          <ntasks_lnd>1</ntasks_lnd>
+          <ntasks_glc>1</ntasks_glc>
+          <ntasks_wav>80</ntasks_wav>
         </ntasks>
         <nthrds>
           <nthrds_atm>1</nthrds_atm>
@@ -225,11 +225,11 @@
           <nthrds_cpl>1</nthrds_cpl>
         </nthrds>
         <rootpe>
-          <rootpe_atm>0</rootpe_atm>
-          <rootpe_lnd>0</rootpe_lnd>
-          <rootpe_rof>0</rootpe_rof>
+          <rootpe_atm>80</rootpe_atm>
+          <rootpe_lnd>80</rootpe_lnd>
+          <rootpe_rof>80</rootpe_rof>
           <rootpe_ice>0</rootpe_ice>
-          <rootpe_ocn>128</rootpe_ocn>
+          <rootpe_ocn>81</rootpe_ocn>
           <rootpe_glc>0</rootpe_glc>
           <rootpe_wav>0</rootpe_wav>
           <rootpe_cpl>0</rootpe_cpl>