tmp solution for ICARUS

[HaiwangYu]

Intended to be a tmp solution for the high mem situation due to the special ICARUS usage. Still need to sort things out further:

• [ ] why the ICARUS multi WCT cfg can work?
• [ ] need to streamline the many switches in OSP
• [ ] some gaps in the tests

debug note: 2024-02-09_high-mem.pdf