I am launching a script .ocn to do some spectre simulation : qs ocean -restore script.ocn in which I have written (xxx to remove the real names...):
simulator( 'spectre )
resultsDir( "xxx/results/" )
stimulusFile( ?xlate nil
analysis('tran ?stop "100n" )
desVar( "wn1" 100n "ln1" 10n "wn2" 80n "ln2" 30n ... "nmos_tran_model_vth" "nsvtlp" ...)
definitionFile( ".../models.scs" )
converge( 'ic "out_b" 0 )
converge( 'ic "out" 1.1 )
save( 'v "out" "out_b" ... "vss" "vri" "vli" )
In the same directory, containing the above script, I have :
corners.scs hiddenOptions.scs models.scs results/
_graphical_stimuli.scs importNetlist.scs script.ocn setupCornersIncludeFile.scs netlist
The netlist content :
// Library name: xxx
// Cell name: inv
// View name: schematic
subckt inv A1 YN vdd vnw vpw vss
parameters wp=xxx lp=xxx pfolds=1 wn=xxx ln=xxx nfolds=1
M5 (YN A1 vdd vnw) pmos_tran_model_vth w=wp*10e5 l=lp*10e5 nfing=pfolds mult=1 \
srcefirst=1 mismatch=1 lpe=0 numcos=1 numcod=1 ngcon=1
M2 (YN A1 vss vpw) nmos_tran_model_vth w=wn*10e5 l=ln*10e5 nfing=nfolds mult=1 \
// End of subcircuit definition.
// Cell name: ncx
subckt ncx ncx
// Library name: Test
// Cell name: xxx
Rleft (vli saout_b) resistor r=Rleft
M2 (out saeqi saout_b vpw) nmos_tran_model_vth w=wn1 l=ln1 nfing=1 mult=1 \
M0 (out net07 vss vpw) nmos_tran_model_vth w=wndiff l=lndiff nfing=1 mult=1 \
M4 (vli saeni vdd vnw) pmos_tran_model_vth w=wpen l=lpen nfing=1 mult=1 srcefirst=1 \
mismatch=1 lpe=0 numcos=1 numcod=1 ngcon=1
M3 (vri saeni vdd vnw) pmos_tran_model_vth w=wpen l=lpen nfing=1 mult=1 srcefirst=1 \
I1 (out_b net08 vdd vnw vpw vss) inv wp=xxx lp=xxx pfolds=1 wn=xxx \
V0 (net07 aout_b) vsource dc=xxx type=dc
I2 (net09) ncx
I cannot succeed in launching without any error the simulation :
Simulating `input.scs' on clusts04 at 4:05:12 PM (process id:
Notice from spectre in `ncx', during circuit read-in.
"input.scs" 29: Subcircuit 'ncx' is empty.
Time for NDB Parsing: CPU = 761.883 ms, elapsed = 1.48527 s.
Time accumulated: CPU = 761.883 ms, elapsed = 1.48527 s.
Peak resident memory used = 30 Mbytes.
Error found by spectre during hierarchy flattening.
ERROR (SFE-23): "input.scs" 37: M2 is an instance of an undefined model
ERROR (SFE-23): "input.scs" 39: M1 is an instance of an undefined model
ERROR (SFE-23): "input.scs" 41: M0 is an instance of an undefined model
ERROR (SFE-23): "input.scs" 43: M4 is an instance of an undefined model
ERROR (SFE-23): "input.scs" 45: M3 is an instance of an undefined model
Error found by spectre in `inv':`I1', during hierarchy flattening.
ERROR (SFE-23): "input.scs" 18: I1.M5 is an instance of an undefined model
ERROR (SFE-23): "input.scs" 20: I1.M2 is an instance of an undefined model
Error found by spectre in `inv':`I0', during hierarchy flattening.
ERROR (SFE-23): "input.scs" 18: I0.M5 is an instance of an undefined model
I would like to be able to launch sucessfully the simulation without any amap/ directory. To do it, I have tried to remove in the script.ocn, the "/" from /out for example.
I don't undertsand why I should, mandatory, use an input.scs file, and once the command launched, I don't have any input.scs file created.
Do you think this is possible ?
Thanks a lot !!
Hi Andrew !!
Thanks for your quick reply.
I checked if the issue was coming from "desVar() which is setting "nmos_tran_model_vth" "nsvtlp" wouldn't alter the model instances in the netlist", it's not coming from here. I replaced the "nmos_tran_model_vth" by nsvtlp for example and I have the same errors in the log. Plus, this strategy is working with a cadence database (I mean the working directory is the Analog Environment one). But, in my case I have to recreate this simulation environment : netlist, script.ocn, graphical_stimuli... because I try to evaluate different netlist as input (different mos sizes, models...).
Then, I am investigating on the "it appears that your ../models.scs file is not defining all the models that the design needs". I will comment soon on it.
Hopefully, you say that I don't need any mapping file. Indeed, I don't want to recreate also all the mapping files environment.