1. From ASAP7 tutorial power-par error chipyard#1173, it looks like Voltus 21.12 is unable to read VPDs written by VCS S-2021.09 (throws syntax error). Converting the waveform to VCD works instead.
2. From previous tests, Voltus' FSDB reader was a few releases behind the equivalent VCS release, causing version compatibility issues.

This likely affects other Cadence tools that can read activity files (Joules, Tempus, etc.).

TASK: find out compatibility matrix + potential workarounds (e.g. hard dependency on Xcelium, older VCS versions).