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I am running a script (pasted below) in Ocean. The simulations have already finished fine. This script just selects the run and extracts measurements from it. It runs fine for a few iterations then it gives me this error (on the 12th iteration)
*Error* putprop: first arg must be either symbol, list, defstruct or user type - nil
This happens right after the plot command of IBIAS_FIN since I see this on the terminal:
*Warning* Wave82 is not a waveform object that can be displayed and will be DELETED automatically. name: "IBIAS_FIN" But if I restart the script onwards from the 12th iteration, the12th iteration works fine it shows the same problem on the 13th iteration. If I execute the script commands 1 at a time for the 12th iteration they work fine.
Please help me figure out why I am getting this error. These measurement statements are from the ocean script generated by ADE, I did not change them so I don't know why they cause a problem.
for(i 1 54 sprintf(corDir "%s%d/psf" "/home/milind/BIAS_TB_TRAN/corner" i) openResults(corDir ) IBIAS_TEMP = IS("/I0/M38/D") plot( IBIAS_TEMP ?expr '( "IBIAS_TEMP" ) ) IBIAS_FIN = value(IS("/I0/M38/D") VAR("gt")) plot( IBIAS_FIN ?expr '( "IBIAS_FIN" ) ) IBIAS_AT_POK = value(IT("/I0/M38/D") cross(VT("/POK") (VAR("vsup") / 2) 1 "rising" nil nil)) plot( IBIAS_AT_POK ?expr '( "IBIAS_AT_POK" ) ) POK_Time = cross(VT("/POK") (VAR("vsup") / 2) 1 "rising" nil nil) plot( POK_Time ?expr '( "POK_Time" ) ) IBIAS_DC = IDC("/I0/M38/D") plot( IBIAS_DC ?expr '( "IBIAS_DC" ) ) ISUP_DC = IDC("/V0/MINUS") plot( ISUP_DC ?expr '( "ISUP_DC" ) ) ISUP_FIN = value(IT("/V0/MINUS") VAR("gt")) plot( ISUP_FIN ?expr '( "ISUP_FIN" ) ) IBIAS_AFGL = value(IS("/I0/M38/D") (2 * VAR("gt"))) plot( IBIAS_AFGL ?expr '( "IBIAS_AFGL" ) ) ISUP_AFGL = value(IT("/V0/MINUS") (2 * VAR("gt"))) plot( ISUP_AFGL ?expr '( "ISUP_AFGL" ) ) POK = VT("/POK") plot( POK ?expr '( "POK" ) ) VSUP = VT("/VDD") plot( VSUP ?expr '( "VSUP" ) ) IBIAS = IT("/I0/M38/D") plot( IBIAS ?expr '( "IBIAS" ) ) LG_Phase = phaseDegUnwrapped(getData("loopGain" ?result "stb")) plot( LG_Phase ?expr '( "LG_Phase" ) ) LG_dB20 = db(mag(getData("loopGain" ?result "stb"))) plot( LG_dB20 ?expr '( "LG_dB20" ) ) Phase_Margin = value(getData("phaseMargin" ?result "tran_stb_margin-tran_margin.stb") 0.01) plot( Phase_Margin ?expr '( "Phase_Margin" ) ) PM_Freq = value(getData("phaseMarginFreq" ?result "tran_stb_margin-tran_margin.stb") 0.01) plot( PM_Freq ?expr '( "PM_Freq" ) ) Gain_Margin = value(getData("gainMargin" ?result "tran_stb_margin-tran_margin.stb") 0.01) plot( Gain_Margin ?expr '( "Gain_Margin" ) ) GM_Freq = value(getData("gainMarginFreq" ?result "tran_stb_margin-tran_margin.stb") 0.01) plot( GM_Freq ?expr '( "GM_Freq" ) ) LG_DC = value(value(dB20(getData("loopGain" ?result "tran_stb-tran_stb")) 1e-05) "time" 0.01) plot( LG_DC ?expr '( "LG_DC" ) ) if(i==1 then fileHandle = outfile("/home/milind/BIAS_TB_TRAN/data.csv" "w") ocnPrint( ?output fileHandle ?numberNotation 'engineering "vdd=5" "ttttttt" "-40" Phase_Margin PM_Freq ) close(fileHandle) else fileHandle = outfile("/home/milind/BIAS_TB_TRAN/data.csv" "a") ocnPrint( ?output fileHandle ?numberNotation 'engineering "vdd=5" "ttttttt" "-40" Phase_Margin PM_Freq ) close(fileHandle) ))
It's not that obvious to me from a quick inspection, so I would suggest doing:
and then running the script - it might reveal some more detail about where it was failing (post back here).
You'd probably be best going to customer support though - then we can take a look at your data.
In reply to Andrew Beckett:
Thanks for the response. I finally found out that the problem was in one of the expressions and it was not being evaluated and causing an error since it was performing some operation on a nil. It did not cause a problem in ADE since I was running the skill from the command line ocean. Somehow the command line is giving different results than from inside icfb. That is another post I have posted and am looking into.