Problem with updating values in Hash Table

When running the code (having fixed the paths to some suitable local data), I got this error:

*Error* eval: unbound variable - tran_pars

This is because the tran_pars at the end of the tranPar function is outside of the let - it should be with. My guess is that you'd done some earlier experiments with the code within the tranPar function and so have a global variable called tran_pars which is defined to be a table - but this global variable is not being updated.

Having fixed the code (see below, with my local paths) it works:

procedure( tranPar( trans_path result resDir)
  let( (tran_pars par_list var)
    par_list = list("gm" "gmb" "gds" "ids" "vgs" "vds" "vdsat" "vth" "cgs" "cgd" "cdb" "csb")
    tran_pars = makeTable("atable1" 0)
    foreach(val par_list
      tran_pars[val] = pv(trans_path val ?result result ?resultsDir resDir)
    )
    ; fixed this - the tran_pars was below the next bracket which was wrong...
    tran_pars
  )
)

;This post-processing looks like this.

for(swp_ind 1 9
     ;sprintf(resDir "/scratch/transistor_checks/maestro/results/maestro/ExplorerRun.0/%d/sandbox:transistor_checks:1/psf" swp_ind)
     sprintf(resDir "/export/home/myuser/simulation/mylib/idsmeas/maestro/results/maestro/Interactive.1/%d/mylib:idsmeas:1/psf" swp_ind)

    NM0 = tranPar( "M0" "dcOpInfo" resDir)

    printf("%g\n" NM0["gm"])

)

Here's the results:

5.88258e-07
3.59547e-18
1.54604e-12
3.94357e-06
2.468e-17
1.0612e-11
1.82409e-06
1.12653e-17
4.84395e-12

Regards,

Andrew

Hi Andrew,

I did not define "tran_pars" as a global variable. And I did not see that unbound variable error. Just that the values in the hash table were not being updated. But what you say works. Thanks!

Also agree that given that tran_pars is only defined "locally" within the scope of the "let" it is not valid to call it outside its scope. It should have given the "unbound" variable error. So its puzzling why I did not see it.

Best Regards,

Murthy

Hi Andrew,

I did not define "tran_pars" as a global variable. And I did not see that unbound variable error. Just that the values in the hash table were not being updated. But what you say works. Thanks!

Also agree that given that tran_pars is only defined "locally" within the scope of the "let" it is not valid to call it outside its scope. It should have given the "unbound" variable error. So its puzzling why I did not see it.

Best Regards,

Murthy

Hi Murthy,

My guess was that you'd pasted some of the code from tranPar into the CIW to test it and unwittingly created a global variable tran_pars, or that you'd earlier written tranPar and omitted tran_pars from the let and added it later. Something like that... otherwise it would definitely have failed due to the variable being undefined.

Anyway, glad it's working now.

Regards,

Andrew

Is there a way to clear variables from memory in CIW? clear() and clearAll() dont seem to do it.

You can't clear all - but you can "clear" an individual variable using:

tran_pars='unbound

(for example). If you set the variable to the special symbol unbound, it is the same as it not being defined in the first place.

Regards,

Andrew