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Nanosim Simulation Query

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nanavaras6284

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I am a student working on Nanosim.

While performing simulation, Nanosim stalls doing DC Initialization. It does not give any error messages. The only message I can see from the terminal is

DC initialization ...
Initializing level 0

Please let me know, how to debug this problem.
 

Stall trying to invert singular matrix or fall into infinite loop.
Try set initial condition for L or C, add paralell resistor to C or serial to L. Sometimes with oscillation problems change in integration method or integration step and iteration number are helpful.
Attach pls schematic and .cir file.
 

Thanks for the reply.

I am working on a digital filterbank design. I don't have the Schematics with me now. Attaching the input files given to Nanosim.

input.ckt - HSPICE netlist for the design
vdd3.sp - SPICE file to set supply voltage
gatelevel3V03.vec - vector file input
test1.cfg - configuration file for nanosim

The zip file containing the above files are attached. I will update the schematics tomorrow, if required.
 

Hi, In the above attached netlist file and vector file, the net-names are not matching.

in spice netlist the net name is "band__0__" and in the vector file it is "filterbank_readdatafile_top_tb.tb.band[0]".

Is this the cause of the problem? Should I change the netname manually in the vector file to that in the spice netlist?
 

I had to change my net names in the vector file, and the supply and ground net names (from vdd and gnd to n42 and n41), as in the SPICE netlist. One I did that, the simulation went on without stalling.
 

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