Disabling hyper-threading (#2965)

Hera, Hercules, and Orion (and possibly Jet) enable hyper-threading by default. This should be disabled explicitly by adding the `sbatch/srun` flag `--hint=nomultithread`. Resolves #2863
NOAA-EMC · Oct 30, 2024 · fc2c5ea · fc2c5ea
1 parent 00f567c
commit fc2c5ea
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Showing 3 changed files with 6 additions and 6 deletions.
diff --git a/env/HERA.env b/env/HERA.env
@@ -9,7 +9,7 @@ fi
 
 step=$1
 
-export launcher="srun -l --export=ALL"
+export launcher="srun -l --export=ALL --hint=nomultithread"
 export mpmd_opt="--multi-prog --output=mpmd.%j.%t.out"
 
 #export POSTAMBLE_CMD='report-mem'
@@ -50,7 +50,7 @@ if [[ "${step}" = "prep" ]] || [[ "${step}" = "prepbufr" ]]; then
     export POE="NO"
     export BACK="NO"
     export sys_tp="HERA"
-    export launcher_PREP="srun"
+    export launcher_PREP="srun --hint=nomultithread"
 
 elif [[ "${step}" = "prepsnowobs" ]]; then
 

diff --git a/env/HERCULES.env b/env/HERCULES.env
@@ -9,7 +9,7 @@ fi
 
 step=$1
 
-export launcher="srun -l --export=ALL"
+export launcher="srun -l --export=ALL --hint=nomultithread"
 export mpmd_opt="--multi-prog --output=mpmd.%j.%t.out"
 
 # Configure MPI environment
@@ -48,7 +48,7 @@ case ${step} in
     export POE="NO"
     export BACK=${BACK:-"YES"}
     export sys_tp="HERCULES"
-    export launcher_PREP="srun"
+    export launcher_PREP="srun --hint=nomultithread"
  ;;
  "prepsnowobs")
 

diff --git a/env/ORION.env b/env/ORION.env
@@ -9,7 +9,7 @@ fi
 
 step=$1
 
-export launcher="srun -l --export=ALL"
+export launcher="srun -l --export=ALL --hint=nomultithread"
 export mpmd_opt="--multi-prog --output=mpmd.%j.%t.out"
 
 # Configure MPI environment
@@ -45,7 +45,7 @@ if [[ "${step}" = "prep" ]] || [[ "${step}" = "prepbufr" ]]; then
     export POE="NO"
     export BACK=${BACK:-"YES"}
     export sys_tp="ORION"
-    export launcher_PREP="srun"
+    export launcher_PREP="srun --hint=nomultithread"
 
 elif [[ "${step}" = "prepsnowobs" ]]; then