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FATAL (SPECTRE-20): Illegal instruction: seems something wrong addressing S-parameter

RogerChen

Hi~

I just installed Spectre181 and have a problem that when I did something with my S-parameter, it showed the message like below.

It's weird because when I imported a less ports S-parameter like .s2p and it could run smoothly.

However, when I run with more ports S-parameter, it failed.

I typed command: spectre +spice +aps -64  <xxxx.sp>

does anyone has similar experience?

************************************************************************************************

Reading file: /home/rogerchen/Downloads/test/send/10361.S23P

Notice from spectre during hierarchy flattening.
Nport compression is disabled on instance spfile_pcb because its used port ratio 1.000000 is greater than 0.800000.

Time for EDB Visiting: CPU = 0.296875 s, elapsed = 0.302316 s.
Time accumulated: CPU = 0.453125 s, elapsed = 4.09891 s.
Peak resident memory used = 6.85e+07 bytes.


Internal error found in spectre during initial setup.
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 (SPECTRE-20): Illegal instruction.

Version 18.1.0.077 64bit -- 1 Aug 2018

****ASSERTION STACK****
0x47ebfce
0x51bc0e
0x7fe271e7ef10
0x7fe2660e36b2
0x7fe2660fddb5
0x7fe2660f8e17
0x7fe27a4f08a8
0x7fe27a33a7d5
0x7fe27a370f36
0x7fe27ba67353
0x2fb3a0c
0x2f78099
0xe8bb5a
0xe95ffa
0xe75a3e
0xe75af1
0x531277
0x5ff9a7
0x604237
0x60440d
0x54f867
0x55b83f
0x55ceae
0x4a2189
0x7fe271e61c87
0x4f6025
/opt/cadence/SPECTRE181/tools/bin/spectre[80]: .: line 1164: 6398: Abort(coredump)
Aborted (core dumped)

************************************************************************************************

  • I'm not sure why you have "just installed" a 6-year old version of Spectre? Why not use a more recent version? It's likely that any bug like this will have been fixed by now.

    Can you share the s-parameter file (upload it as an attachment)? Also, what doe the nport instance look like in the netlist?

    Andrew

  • in reply to Andrew Beckett

    Thanks for your reply!

    I had some problems for Linux to run the latest Spectre version, and that's why I used 18.1.
    After saw your reply, I try to fix it and now seems the 23.1 version doesn't have the issue for my device.

    THX

    Roger

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