It’s possible but not prioritized. Could you open an issue on github? When we have enough users requesting the feature (or when we have persistent user requesting it), the priority may be escalated. 😊 Meanwhile, could you describe the scenario that you have to use singleton init (vs. `mpirun -n 1 prog …`)? -- Hui Zhou From: Martín Morales via discuss <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Wednesday, September 23, 2020 at 3:49 PM To: "[email protected]" <[email protected]> Cc: Martín Morales <[email protected]> Subject: [mpich-discuss] Spawns without mpirun Hi all! I asked here some time ago about dynamically spawn processes from a singleton but the answer was that unfortunately, there was a problem with that and just It was not possible. I wonder now if this functionality is available. Best regards Martín [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif]<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>