Realtime mode stops when no clock is specified

[dchassin]

Problem description

The simulation does not enter realtime mode when requested.

Steps to reproduce

Do the following:

$ gridlabd model get IEEE/123
$ gridlabd -D run_realtime=1 123.glm
WARNING  [INIT] : node_14: substation:3 is using the default base power of 100 VA. This could cause instability on your system.
WARNING  [2023-05-19 06:15:46 PDT] : last warning message was repeated 26 times
$

Expected behavior

The simulation should not exit.

System information

• GridLAB-D version: HiPAS GridLAB-D 4.3.1-230517 (develop) Darwin
• Operating system: Darwin PC97529 21.6.0 Darwin Kernel Version 21.6.0: Thu Sep 29 20:12:57 PDT 2022; root:xnu-8020.240.7~1/RELEASE_X86_64 x86_64

[dchassin]

The reason is that the IEEE/123 does not contain anything that would change over time, so the simulation goes immediately to steady state and stops. The immediate solution is to include weather data. The long-term solution is to add global variable to control the default behavior so that the simulation does not stop on steady state.

[dchassin]

Another solution is to change the default stop behavior when running in realtime to not stop on steady state.