I am trying to run multiple simulations from a single OCEAN script.  For various reasons, I cannot use a parametric simulation.  Instead I am, at one point, using a "foreach(" loop to step through various parameter values, and a desVar expression to set the parameter to the given value.  

A portion of the code is shown below.  The first iteration through the loop performs fine, and all three "NOTE" points are reached.  The second time through the loop, however, the script aborts after NOTE1, with the following error:

*Error* fprintf/sprintf: format spec. incompatible with data - nil

Are multiple run() statements not allowed in Ocean scripts?  I am running my script in Cadence Ver: ic5141_usr5 from the CIW window.

foreach( (iloadval index) '(0 50e-3 93e-3 150e-3 186e-3) '(1 2 3 4 5)
                       desVar( "iload" iloadval )
                       ocnPrint( "NOTE1" )
                       run()
                       ocnPrint( "NOTE2" )
                       Avg = average(clip(VT("/Vout") 0.000125 0.00015))
                       Ripple = (ymax(clip(VT("/Vout") 0.000145 0.00015)) - ymin(clip(VT("/Vout") 0.000145 0.00015)))*1000
                       AvgArray[index] = Avg
                       RippleArray[index] = Ripple
                       ocnPrint( "NOTE3" )
)

Thanks,
--Noth Bus

I can run the simulations normally (outside of OCEAN) without problems.  I also don't have problems if I change the order of variables--the second simulation always exits with the same error.  

I am currently using a bdacosim simulator.  When I use spectreVerilog, I can execute multiple run() statements, however the simulations take ~10 times longer.  Any idea what bdacosim might be doing differently?

Andrew Beckett wrote on May 1^st, 2009, 5:44am:


Yeah, that's what we ended up doing on this side.  The ball's in their court, now, but I'll post an update to this thread if/when we get the problem figured out.  

Thanks again!