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Transient simulation crashes SPECTRE181, APS

Hello,

I have the following problem: My transient simulation crashes with this error message in the simulation output log:

Internal error found in spectre during transient analysis `tran'.
Encountered a critical error during simulation. Please run `mmsimpack' to pack the test case (use mmsimpack -h option to get detailed usage), and submit the case via Cadence Online Support, including the package tar file and any other information that can help identify the problem.
FATAL (CMI-2010): Assertion failed in file `MultirateMngr.cc' at line 4176.
FATAL (SPECTRE-21): Assertion failed.

Version 18.1.0.314.isr5 64bit -- 26 Mar 2019

****ASSERTION STACK****
0x4f01bde
0x5ecece
0x7fd45452d280
0x7fd45452d207
0x7fd45452e8f8
0x1743473
0x1744cae
0x12ebdd0
0x12f67b7
0x128638b
0x1063a06
0x123dcce
0x125f7ea
0x10ab09b
0x10b05e8
0x10b156c
0x3637056
0x4cd565e
0x7fd44ae7a9a4
0x44b59f3
0x44b653b
0x44af4ba
0x44ac8b1
0x44acfa7
0x7fd44ae79a22
0x4cd77d3
0x515f3f
0x516f67
0x517e62
0x4a9c59
0x7fd4545193d5
0x503075

****LIBRARIES****
/software/cadence/SPECTRE/181/tools/spectre/bin/64bit/spectre [0x400000]
/lib64/libc.so.6 [0x7fd4544f7000]
dfII/../lib/64bit/simiADEPlugin.so [0x7fd44ae76000]

I am using cadence Virtuoso 6.1.7 ISR23 and SPECTRE18.1 ISR5. The fault occurs under following conditions:
I do a transient simulation in Assembler with APS activated, limited to one thread. I sweep across a global variable (a resistor from analogLib). All simulations are done on the same computer, one after the other, no parallel jobs. The first 2 simulations of the sweep are running without any problems. The third simulation and all following will abort.
If I turn off APS, the simulation does not crash. What I also recognised: In my testbench I simulate a cellview (schematic) in which I use another cellview (operational amplifier) 2 times. If I use two different cellviews (exact same operational amplifier, just copied to a different cellview name), the simulation works fine for all runs.

Regards,
Michael

Dimitra Papazoglou over 6 years ago

Hi Michael,

I'd advise you to submit a ticket on Cadence Online support website and provide a testcase, as the error suggests, along with your findings and the information you share above.

Regards,
Dimitra
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Michael H over 6 years ago in reply to Dimitra Papazoglou

Hi Dimitra,

thanks, I submitted a ticket.

Regards,

Michael
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