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I'm trying to use ELC to characterize a very simple NAND gate using Spectre and UMC 130nm technology. For some reason the simulations fail as:
Simulation Summary -*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*--------------+-------------+----------+--------------+------------------------+-------------+----------+------------+-----------+------------ DESIGN | PROCESS | #ID | STAGE | STATUS | IPDB-------------+-------------+----------+------------+-----------+------------NANDSIZED typical D0000 SIMULATE FAIL std NANDSIZED typical D0001 SIMULATE FAIL std NANDSIZED typical D0002 SIMULATE FAIL std NANDSIZED typical D0003 SIMULATE FAIL std NANDSIZED typical D0004 SIMULATE FAIL std NANDSIZED typical D0005 SIMULATE FAIL std NANDSIZED typical D0006 SIMULATE FAIL std NANDSIZED typical D0007 SIMULATE FAIL std -------------+-------------+----------+------------+----------
When I see the log_dir, I get:
Using command spectreSimulation failed with the status 512Releasing lock
Looking at the work_dir and the .lis files, it seems to have a problem with the model files. Also I get this funny error at the end too:
Error found by spectre during circuit read-in. "typical_D0000_tr.sp" 46: Unknown dot word `.measure'. "typical_D0000_tr.sp" 47: Unknown dot word `.measure'.
It looks like Spectre tries to run an Hspice netlist. I've already specified Spectre as my simulator in the elccfg file. Can anyone help me please?
Judging by the error, you appear to be using a really old version of spectre (probably from IC5141). This uses the "old" front end (which was replaced by a newer front end that natively reads SPICE syntax in MMSIM60 which was released in 2004). So please ensure that you have spectre from a newer release (e.g. MMSIM11.1 or MMSIM12.1)
In reply to Andrew Beckett:
Thanks a lot Andrew,
Yes that was the problem. So I guess there are 2 solutions: either use an updated version of Spectre or switch to Hspice. I chose the second option and the .lib files are now generated.