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Accessing spectre simulation results in an ocean script

berbagci

Hi Andrew,

I have a very weird problem. I have checked other posts but couldn't figure it out. Hence, I decided to post here.

So I'm simulating a design in spectre simulator (an extracted netlist in spectre format). I have an ocean script and simulation runs without any problem. I want to do some calculations with the results.

However, I cannot seem to access any of the low level nets (although I can see them with outputs() command). 

For instance after typing outputs(), I get:

("/C/N_XC11/XLC/TCONF<128>_XC11/XLC/XBLE<2>/XLUT/XLUT_L1<0>/XI0<0>/MM2<0>_g" "/C/N_XC11/XLC/TCONFB<128>_XC11/XLC/XBLE<2>/XLUT/XLUT_L1<0>/XI0<0>/MM13<0>_g" "/C/N_XC11/XLC/TCONF<130>_XC11/XLC/XBLE<2>/XLUT/XLUT_L1<0>/XI0<0>/MM2<2>_g" "/C/N_XC11/XLC/TCONFB<130>_XC11/XLC/XBLE<2>/XLUT/XLUT_L1<0>/XI0<0>/MM13<2>_g" "/C/N_XC11/XLC/VSS_FIRE<5>_XC11/XLC/XBLE<2>/XLUT/XOTP<2>/XPUF_CELL/MHCI_TR_s" "/C/N_VSS_XCH_DUMMY/X33/XI8/XI203/MM5_s"

)

As seen here, I'm trying to access some low level nets. 

when I try getData("/C/N_VSS_XCH_DUMMY/X33/XI8/XI203/MM5_s"), it returns nil. Also tried to access nets that were part of an array (<>) by using "\", that didn't work either.

I tried getData("C.N_VSS_XCH_DUMMY.X33.XI8.XI203.MM5_s"), again getting nil. For some reason I cannot access any of the available nets. I checked runObjFile, directories (netlist>map, amap, psf etc.). Everything seems to be ok. I will be glad if you can help me out. 

Any help greatly appreciated. Thanks

Burak

Parents
  • Andrew Beckett

    Burak,

    It's a bit odd that Calibre is creating hierarchical names with / as the hierarchy separator. Assuming this is an extracted view, I'm not sure how they are creating the view because a "/" should be an illegal character in the name. Maybe it's being done directly in OA (I'd have to check what's allowed in OpenAccess), but if so, it's breaking Virtuoso's allowed namespace, so I think you should take that up with Mentor. If it's an included netlist, that's odd too because i would have expected a "." as the hierarchy separator then.

    Generally speaking if hierarchical names are used in an extracted view, they should be encoded using the "CDBAflat" name space (which uses the pipe "|" character as the hierarchy separator).

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Burak,

    It's a bit odd that Calibre is creating hierarchical names with / as the hierarchy separator. Assuming this is an extracted view, I'm not sure how they are creating the view because a "/" should be an illegal character in the name. Maybe it's being done directly in OA (I'd have to check what's allowed in OpenAccess), but if so, it's breaking Virtuoso's allowed namespace, so I think you should take that up with Mentor. If it's an included netlist, that's odd too because i would have expected a "." as the hierarchy separator then.

    Generally speaking if hierarchical names are used in an extracted view, they should be encoded using the "CDBAflat" name space (which uses the pipe "|" character as the hierarchy separator).

    Regards,

    Andrew.

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