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Corner and varible sweep simulation in spectre

lahsivece

Hi ,

I am trying to do a multivariable sweep and corner simulation in spectre . 

In ocean , it is easy , I can do following 

b0_list = list(0.0 1.2)
b1_list = list(0.0 1.2)
b2_list = list(0.0 1.2)

corners='("ss" "ff" "tt" "snfp" "fnsp")

foreach(corner corners

modelFile(list("<path_to_model_library>/model.lib.scs" sprintf(nil "%s" corner)))
foreach(x b2_list
 desVar("b2" x)
 foreach(y b1_list
 desVar("b1" y)
 foreach(z b0_list
 desVar("b0" z)
  resultsDir(sprintf(nil "<path_to_result_directory>/spectre/schematic/corner=%sb5=%gb4=%gb3=%gb2=%gb1=%gb0=%g",corner,b5_z,b4_y,b3_x,x,y,z))
 run()
 )
 )
 )
)


How can I modify above to use it  for spectre simulations from command line ?

Due to some logistical issues , I can have access to either one  MMSIM (for spectre) or IC514( for ocean) for simulation .

Please advise. 

Thanks 

  • Hi Andrew,

    I would like to run top level simulation with sweeping "w" parameter of device "m1" in subcircuit "xs25".

    I know how to sweep parameter of device which are present on top level schematic (for example "m5"), but I don't know how to do this for device in subcircit.

    example:

    //

        m6 ( w_s2_i1 w_s1_fo1b w_s2_i1 vss )  modn w=1u l=0.35u ad=0.85p as=0.85p \
            pd=2.7u ps=2.7u nrs=0.3 nrd=0.3 ng=1
        m5 ( w_s2_i2 w_s1_fo2b w_s2_i2 vss )  modn w=1u l=0.35u ad=0.85p \
            as=0.85p pd=2.7u ps=2.7u nrs=0.3 nrd=0.3 ng=1
        xs25 ( w_33 w_32 vdda w_19 ) tst1

    .......

    subckt tst1 vbpp vbpc vdda out
    m1 ( w_1 vbpp vdda vdda )  modp w=7u l=1u ad=5.95p as=5.95p pd=8.7u ps=8.7u \
            nrs=42.857m nrd=42.857m ng=1
    m2 ( out vbpc w_1 vdda )  modp w=4u l=1u ad=3.4p as=3.4p pd=5.7u ps=5.7u \
            nrs=75m nrd=75m ng=1

    ...............

    ends tst1

    ...............

    sw1 sweep sub=xs25 mod=mos bsim3v3 param=w values=[5u 6u 7u 8u 9u] {
       ac ac start=100 stop=150M dec=20
    }
    //

    Jerry

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