When running from the command line, the "-tb" switch must immediately follow the "-s" switch. Failure to do so results in an error message similar to the following:
"ERROR: Portability90: the -tb switch is not allowed."
One solution is to use these two switches in the correct order: "-s" followed by "-tb" with no switches in between.
xpwr top.ncd -x top_xpwr.xml -wx top_xpwr.xml -s /home/temp/abc.vcd -tb 100 ps -o top.pwr top.pcf
This will be fixed in the next major release of the software.
Note 1: The -tb switch does not work with ".xad" sim data files.
Note 2: The -tb switch is currently deprecate and will be made unavailable in 10.1.