add environment variable for fcst job for hercules/orion

for addressing hang issues

Author: JessicaMeixner-NOAA

env/HERCULES.env

@@ -214,6 +214,7 @@ case ${step} in
  "fcst" | "efcs")
 
     export OMP_STACKSIZE=512M
+    export FI_MLX_INJECT_LIMIT=0
 
     (( nnodes = (ntasks+tasks_per_node-1)/tasks_per_node ))
     (( ufs_ntasks = nnodes*tasks_per_node ))

env/ORION.env

@@ -208,6 +208,8 @@ elif [[ "${step}" = "eupd" ]]; then
 
 elif [[ "${step}" = "fcst" ]] || [[ "${step}" = "efcs" ]]; then
 
+    export FI_MLX_INJECT_LIMIT=0
+
     (( nnodes = (ntasks+tasks_per_node-1)/tasks_per_node ))
     (( ufs_ntasks = nnodes*tasks_per_node ))
     # With ESMF threading, the model wants to use the full node