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St9bad_alloc error while running Ocean

kumarp

Hi,

I am running Ocean script from the unix terminal. I have several for loops inside so that I can perform multiple runs. If i have a loop that changes some variables (say from 1 to 1000), then after 300 runs, the script stops with "St9bad_alloc" error. How should I debug this?

 

Thanks,

Kumar

Parents
  • kumarp

    Hi Andrew & Team,

    As per your suggestion, I am attaching here more details about my cadence version and the OCEAN script that I am using. I have also listed my problem below again. Please let me know if I can provide any more details that would help debug this issue.

    VERSION INFO: IC5141ISR0624

    SubVersion: 5.10.41.500.6.143 (32-bit address)

    PROBLEM: When i run this script, it stops with the following error after around 305 runs. And depending on how many equations I compute, it stops at different runs. The more the equations, it stops earlier. 

    ERROR:

    *Error* Exception: St9bad_alloc - nil

    *Error* load: error while loading file - "kumar.ocn"

     

    OCEAN SCRIPT:

     

    envSetVal("spectre.envOpts" "controlMode" 'string "batch")

    designFile = "**/netlist"

    resultsDirect = "**/spectre/schematic"

    oceanScrptFile = "**/kumar.ocn"

    dataFile = "**/kumar.dat"

    　

    　

    code_length = 500

    loop_count = code_length

    step = 0

     

    simulator( 'spectre )

    design( designFile )

    resultsDir( resultsDirect )

    modelFile('("Model File Path Defined Here"))

     

    for(NOS 1 code_length

    RIN = 500 - step

     

    desVar( "R1" 255)

    desVar( "R2" 255)

    desVar( "R3" 63)

    desVar( "R4" 255)

    desVar( "RINS" RIN)

    ** I HAVE FEW MORE VARIABLES THAT ARE SET TO CONSTANT VALUE **

     

    step = step + 1

    loop_count = loop_count - 1

    　

    analysis('sp ?ports list("/PORT0" "/PORT1") ?start "10M" ?stop "100M"

    ?dec "40" ?values list("50M") ?donoise "yes" ?oprobe "/PORT1"

    ?iprobe "/PORT0" )

     

    analysis('dc ?saveOppoint t )

     

    option( 'vabstol "1e-8" 'reltol "1e-5")

    temp( 27 )

    run()

    **MY EQUATIONS ** 

    Gain_10M = value(db10(gt(sp(1 1 ?result "sp") sp(1 2 ?result "sp") sp(2 1 ?result "sp") sp(2 2 ?result "sp"))) 10000000)

     

    ** I HAVE FEW MORE EQUATIONS AT DIFFERENT FREQUENCY **

     

    dfKey = outfile(dataFile "a")

    fprintf(dfKey "| %-5.3d | %-5.3d | %-5.3d | %-5.3d | %-5.3d | %-5.3f | %-5.3f | %-5.3f | %-5.3f |\n"

    RINS R1 R2 R3 R4 Gain_10M Gain_15M Gain_20M Gain_30M)

    close(dfKey)

    )

    dfKey = outfile(dataFile "a")

    close(dfKey)

    dfKey=nil

     

    Regards & Thanks

    Kumar 

Reply
  • kumarp

    Hi Andrew & Team,

    As per your suggestion, I am attaching here more details about my cadence version and the OCEAN script that I am using. I have also listed my problem below again. Please let me know if I can provide any more details that would help debug this issue.

    VERSION INFO: IC5141ISR0624

    SubVersion: 5.10.41.500.6.143 (32-bit address)

    PROBLEM: When i run this script, it stops with the following error after around 305 runs. And depending on how many equations I compute, it stops at different runs. The more the equations, it stops earlier. 

    ERROR:

    *Error* Exception: St9bad_alloc - nil

    *Error* load: error while loading file - "kumar.ocn"

     

    OCEAN SCRIPT:

     

    envSetVal("spectre.envOpts" "controlMode" 'string "batch")

    designFile = "**/netlist"

    resultsDirect = "**/spectre/schematic"

    oceanScrptFile = "**/kumar.ocn"

    dataFile = "**/kumar.dat"

    　

    　

    code_length = 500

    loop_count = code_length

    step = 0

     

    simulator( 'spectre )

    design( designFile )

    resultsDir( resultsDirect )

    modelFile('("Model File Path Defined Here"))

     

    for(NOS 1 code_length

    RIN = 500 - step

     

    desVar( "R1" 255)

    desVar( "R2" 255)

    desVar( "R3" 63)

    desVar( "R4" 255)

    desVar( "RINS" RIN)

    ** I HAVE FEW MORE VARIABLES THAT ARE SET TO CONSTANT VALUE **

     

    step = step + 1

    loop_count = loop_count - 1

    　

    analysis('sp ?ports list("/PORT0" "/PORT1") ?start "10M" ?stop "100M"

    ?dec "40" ?values list("50M") ?donoise "yes" ?oprobe "/PORT1"

    ?iprobe "/PORT0" )

     

    analysis('dc ?saveOppoint t )

     

    option( 'vabstol "1e-8" 'reltol "1e-5")

    temp( 27 )

    run()

    **MY EQUATIONS ** 

    Gain_10M = value(db10(gt(sp(1 1 ?result "sp") sp(1 2 ?result "sp") sp(2 1 ?result "sp") sp(2 2 ?result "sp"))) 10000000)

     

    ** I HAVE FEW MORE EQUATIONS AT DIFFERENT FREQUENCY **

     

    dfKey = outfile(dataFile "a")

    fprintf(dfKey "| %-5.3d | %-5.3d | %-5.3d | %-5.3d | %-5.3d | %-5.3f | %-5.3f | %-5.3f | %-5.3f |\n"

    RINS R1 R2 R3 R4 Gain_10M Gain_15M Gain_20M Gain_30M)

    close(dfKey)

    )

    dfKey = outfile(dataFile "a")

    close(dfKey)

    dfKey=nil

     

    Regards & Thanks

    Kumar 

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