Stats

  • Locked Locked
  • Replies 3
  • Subscribers 93
  • Views 1174
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

ELC doesn't simulate anything

mbhealy

 Hi All,

I'm having a problem getting elc to run any simulations. I'm currently testing on two small inverters. 

 Whenever I run db_spice I get the following message: 

 [WARNING(db_spice)]No spice simulation to do, please check the cell/process list for any error

I can't find any errors in my configuration files. Would someone please look at them and tell me if they see anything wrong?

Here is my elccfg:

 #Specify the environment variable settings.
EC_SIM_USE_LSF=1;
EC_SIM_LSF_CMD=" ";
EC_SIM_LSF_PARALLEL=2;
EC_SIM_TYPE="hspice";
EC_SIM_NAME="hspice";
EC_SPICE_SIMPLIFY=1;
EC_CHAR="ECSM-TIMING ECSM-POWER";
 
#Specify the characterization inputs.
 
SUBCKT="my_cells.sp";
MODEL="my_typical_models.sp";
DESIGNS="INVX1 INVX2";
SETUP="my_setup.ss";
PROCESS="typical";

And here is my_setup.ss:

 Process my_typical_process {
        voltage = 1.5;
        temp = 25;
        Corner = "typical";
        Vtn = 0.320;
        Vtp = 0.316;
};

Group POWR{
        PIN = VDD;
};

Index inv_index {
        Slew = 0.028n 0.044n 0.076n 0.138n 0.264n 0.516n 1.02n ;
        Load = 0.00079p 0.002054p 0.00474p 0.010112p 0.020856p 0.042186p 0.08532p ;
};

Signal std_cell_sig {
        unit = REL;
        Vh=1.0 1.0;
        Vl=0.0 0.0;
        Vth=0.5 0.5;
        Vsh=0.8 0.8;
        Vsl=0.2 0.2;
        tsmax=2.0n;
};

Signal power_sig {
        unit = ABS;
        Vh=1.5 1.5;
        Vl=0.0 0.0;
        Vth=0.75 0.75;
        Vsh=2.0 2.0;
        Vsl=0.5 0.5;
        tsmax=2.0n;
};

 Margin m0 {
        setup   = 1.0 0.0 ;
        hold    = 1.0 0.0 ;
        release = 1.0 0.0 ;
        removal = 1.0 0.0 ;
        recovery = 1.0 0.0 ;
        width   = 1.0 0.0 ;
        delay   = 1.0 0.0 ;
        power   = 1.0 0.0 ;
        cap     = 1.0 0.0 ;
};

Nominal n0 {
        delay = 0.5 0.5 ;
        power = 0.5 0.5 ;
        cap   = 0.5 0.5 ;
};

Simulation std_cell_sim {
        transient = 0.01 80n 10p;
//      dc = 0.1 4.5 0.1;
        bisec = 6.0n 6.0n 100p;
        resistance = 10MEG;
};

set process(my_typical_process) {
        simulation = std_cell_sim;
        index = inv_index;
        signal = std_cell_sig;
        margin = m0;
        nominal = n0;
};

set signal(my_typical_process) {
        Group(POWR) = power_sig;
};

 

Thanks!

Parents
  • cdbular

    Hi, I have exactly the same problem.

    How did you specifically solve the problem?

     

    Here is my  elccfg file

    ###########################

    #Specify the environment variable settings to use for characterization.
    EC_SIM_USE_LSF=1;
    EC_SIM_LSF_CMD="";
    EC_SIM_LSF_PARALLEL=10;
    EC_SIM_TYPE="spectre";
    EC_IGN_XTG=1;
    EC_SIM_NAME="spectre";
    EC_CHAR=“ECSM-TIMING ECSM-POWER”;
    set_var EC_SPICE_SUPPLY1_NAMES = "vdd vdd2";
    set_var EC_SPICE_SUPPLY0_NAMES = "gnd gnd2";
    set_var EC_HALF_WIDTH_HOLD_FLAG = true;


    #Specify the characterization inputs.
    SUBCKT="osu05_stdcells.sp";
    MODEL="ami05.m";
    DESIGNS="INVX1";
    SETUP="setup.default";
    PROCESS = "elc_process";

    ######################

     

    And here my setup file

    #########################

    Process typical{
        voltage = 5.0;
        temp = 25;
        Corner = "";
        Vtn = 0.65;
        Vtp = 0.95;
    };

    Signal std_cell {
        unit = REL;
        Vh=1.0 1.0;
        Vl=0.0 0.0;
        Vth=0.5 0.5;
        Vsh=0.8 0.8;
        Vsl=0.2 0.2;
        tsmax=2.0n;
    };

    Signal VDD5.0V {
        unit = ABS;
        Vh=5.0 5.0;
        Vl=0.0 0.0;
        Vth=2.5 2.5;
        Vsh=2.0 2.0;
        Vsl=0.5 0.5;
        tsmax=2.0n;
    };
       
    Simulation std_cell{
        transient = 0.1n 80n 10p;
        dc = 0.1 4.5 0.1;
        bisec = 6.0n 6.0n 100p;
        resistance = 10MEG;
    };

    Index X1{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.025p 0.05p 0.1p 0.3p 0.6p;
    };

    Index X2{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.050p 0.10p 0.2p 0.6p 1.2p;
    };

    Index X4{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.1p 0.2p 0.4p 1.2p 2.4p;
    };

    Index X8{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.2p 0.4p 0.8p 2.4p 4.8p;
    };

    Index Clk_Slew{
        bslew = 0.100n 0.5n 1.0n;
    };

    Index IO5x5{
        Slew = 0.1n 0.3n 0.6n 1.3n 3.0n;
        Load = 5p 10p 20p 50p 75p;
    };

    Group POWR{
        PIN = *.Vdd *.Vdd2;
    };

    Group Core_Pins{
        PIN = *.DO *.DI ;
    };

    Group Pad_Pins{
        PIN = *.YPAD ;
    };

    Group X1{
        CELL = *X1 ;
    };

    Group X2{
        CELL = *X2 ;
    };

    Group X4{
        CELL = *X4 ;
    };

    Group X8{
        CELL = *X8 ;
    };

    Group Clk_Slew{
        PIN = *.CLK ;
    };

    Margin m0 {
        setup     = 1.0 0.0 ;
        hold     = 1.0 0.0 ;
        release = 1.0 0.0 ;
        removal = 1.0 0.0 ;
        recovery = 1.0 0.0 ;
        width    = 1.0 0.0 ;
        delay     = 1.0 0.0 ;
        power     = 1.0 0.0 ;
        cap     = 1.0 0.0 ;
    } ;

    Nominal n0 {
        delay = 0.5 0.5 ;
        power = 0.5 0.5 ;
        cap   = 0.5 0.5 ;
    } ;

    set process(typical){
        simulation = std_cell;
        signal = std_cell;
        margin = m0;
        nominal = n0;
    };

    set index(typical){
        Group(X1) = X1;
        Group(X2) = X2;
        Group(X4) = X4;
        Group(X8) = X8;
        Group(Pad_Pins)  = IO5x5;
        Group(Core_Pins) = X4;
        Group(Clk_Slew)  = Clk_Slew;
    };

    set signal(typical){
        Group(POWR) = VDD5.0V;
    };
     

     

Reply
  • cdbular

    Hi, I have exactly the same problem.

    How did you specifically solve the problem?

     

    Here is my  elccfg file

    ###########################

    #Specify the environment variable settings to use for characterization.
    EC_SIM_USE_LSF=1;
    EC_SIM_LSF_CMD="";
    EC_SIM_LSF_PARALLEL=10;
    EC_SIM_TYPE="spectre";
    EC_IGN_XTG=1;
    EC_SIM_NAME="spectre";
    EC_CHAR=“ECSM-TIMING ECSM-POWER”;
    set_var EC_SPICE_SUPPLY1_NAMES = "vdd vdd2";
    set_var EC_SPICE_SUPPLY0_NAMES = "gnd gnd2";
    set_var EC_HALF_WIDTH_HOLD_FLAG = true;


    #Specify the characterization inputs.
    SUBCKT="osu05_stdcells.sp";
    MODEL="ami05.m";
    DESIGNS="INVX1";
    SETUP="setup.default";
    PROCESS = "elc_process";

    ######################

     

    And here my setup file

    #########################

    Process typical{
        voltage = 5.0;
        temp = 25;
        Corner = "";
        Vtn = 0.65;
        Vtp = 0.95;
    };

    Signal std_cell {
        unit = REL;
        Vh=1.0 1.0;
        Vl=0.0 0.0;
        Vth=0.5 0.5;
        Vsh=0.8 0.8;
        Vsl=0.2 0.2;
        tsmax=2.0n;
    };

    Signal VDD5.0V {
        unit = ABS;
        Vh=5.0 5.0;
        Vl=0.0 0.0;
        Vth=2.5 2.5;
        Vsh=2.0 2.0;
        Vsl=0.5 0.5;
        tsmax=2.0n;
    };
       
    Simulation std_cell{
        transient = 0.1n 80n 10p;
        dc = 0.1 4.5 0.1;
        bisec = 6.0n 6.0n 100p;
        resistance = 10MEG;
    };

    Index X1{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.025p 0.05p 0.1p 0.3p 0.6p;
    };

    Index X2{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.050p 0.10p 0.2p 0.6p 1.2p;
    };

    Index X4{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.1p 0.2p 0.4p 1.2p 2.4p;
    };

    Index X8{
        Slew = 0.100n 0.30n 0.7n 1.0n 2.0n;
        Load = 0.2p 0.4p 0.8p 2.4p 4.8p;
    };

    Index Clk_Slew{
        bslew = 0.100n 0.5n 1.0n;
    };

    Index IO5x5{
        Slew = 0.1n 0.3n 0.6n 1.3n 3.0n;
        Load = 5p 10p 20p 50p 75p;
    };

    Group POWR{
        PIN = *.Vdd *.Vdd2;
    };

    Group Core_Pins{
        PIN = *.DO *.DI ;
    };

    Group Pad_Pins{
        PIN = *.YPAD ;
    };

    Group X1{
        CELL = *X1 ;
    };

    Group X2{
        CELL = *X2 ;
    };

    Group X4{
        CELL = *X4 ;
    };

    Group X8{
        CELL = *X8 ;
    };

    Group Clk_Slew{
        PIN = *.CLK ;
    };

    Margin m0 {
        setup     = 1.0 0.0 ;
        hold     = 1.0 0.0 ;
        release = 1.0 0.0 ;
        removal = 1.0 0.0 ;
        recovery = 1.0 0.0 ;
        width    = 1.0 0.0 ;
        delay     = 1.0 0.0 ;
        power     = 1.0 0.0 ;
        cap     = 1.0 0.0 ;
    } ;

    Nominal n0 {
        delay = 0.5 0.5 ;
        power = 0.5 0.5 ;
        cap   = 0.5 0.5 ;
    } ;

    set process(typical){
        simulation = std_cell;
        signal = std_cell;
        margin = m0;
        nominal = n0;
    };

    set index(typical){
        Group(X1) = X1;
        Group(X2) = X2;
        Group(X4) = X4;
        Group(X8) = X8;
        Group(Pad_Pins)  = IO5x5;
        Group(Core_Pins) = X4;
        Group(Clk_Slew)  = Clk_Slew;
    };

    set signal(typical){
        Group(POWR) = VDD5.0V;
    };
     

     

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.