[skip ci] TMP: to run the workflow manually

Author: elelaysh

.github/workflows/stackhpc-multinode-periodic.yml

@@ -7,6 +7,7 @@ name: Multinode periodic
   schedule:
     # Runs nightly at 2:42 AM.
     - cron: "42 2 * * *"
+  workflow_dispatch:
 jobs:
   generate-inputs:
     name: Generate inputs