VerilogA Problem in MMSIM-7.1

Hi Marcos,

I thought I'd replied to this, but couldn't see my response (maybe it was when I was travelling and had some network issues in a WiFi hotspot).

Anyway, first I would check with the latest hotfix (188 is not the latest), and if it's still not working, you should definitely contact Cadence Customer Support about this. Going back to an older subversion is not really a viable long-term solution.

Regards,

Andrew.

Hi Andrew,

The problem is that we bought Cadence through Europractice (http://www.europractice-ic.com/), so the only version we hace access is MMSIM 7.1 HF188 (http://www.europractice.stfc.ac.uk/software/cadence_09_10.html). Moreover, I can't register in this web with our license server ID as it is not acepted. We'll ask then to Europractice and see.

Thanks for your time.

Regards.
Marcos.

I ran the same script and it too reports the same message:

ted@deadflowers MMSIM 12:40pm >tools/systemc/files/install/ncscGcc64b.ins
tools/systemc/files/install/ncscGcc64b.ins: line 52: cd: ./tools./systemc: No such file or directory

  The script contains:

cd $proot/tools.$install_target/systemc

        outputfile=gcc/4.1-x86_64/bin/gcc.t.Z

and I have the link:

ted@deadflowers MMSIM 12:40pm >ls -al tools
lrwxrwxrwx 1 cmcmgr cmcmgr 11 Jul 11  2013 tools -> tools.lnx86

When I run spectre (MMSIM7.1)  on a CentOS7 system it dies and reports:

cpp: error trying to exec 'cc1': execvp

On RHEL6 system, same version of Spectre runs fine... I'm at a loss to explain why ?

Any clues?

Thanks

Ted

Ted,

First of all, CentOS is not supported at all (we don't test on it), but generally will work because it corresponds to RHEL releases (which we do test). With CentOS7, that corresponds to RHEL7, and we have not released any MMSIM releases yet which are supported on RHEL7. RHEL7 is on the support matrix for new releases in 2015 however.

RHEL7 has a major kernel version change, so there are likely to be some compatibility issues.

Secondly, MMSIM71 is a rather old release. Since MMSIM71 there has been MMSIM72, MMSIM101, MMSIM111, MMSIM121, MMSIM131 and MMSIM141. That means there have been 6 new major releases since then - and these come out approximately once a year. So you're attempting to run a 7 year old release of MMSIM on a fairly up to date OS. That's asking for trouble, especially when it's a not insignificant change in the OS. MMSIM71 wasn't even supported on RHEL6 (I can't remember the support matrix for MMSIM71 as it was so long ago).

Regards,

Andrew.

Thanks Andrew,  I realize MMSIM7.2 is somewhat dated ( we are running) 7.2 actually and not 7.1).  The odd thing is that

I'm able to perform Spectre simulations with many of our other desiogn kits on CentOS7 without any problems : cmosp18, tsmc90nm/65nm.

It is only with the IBM 130nm kit which I encounter that odd error.  If we can't figure it out (our system admins think it s path issue), I can try

installing a newer verison of MMSIM.  Whic one do you recommend.  I'm running IC5.141 because our two highyl used kits (tsmc65nm/90nm)

are qualified for use with IC5.141 are there are no other versions of this kit.

Ted

Ted,

The fact that it works with one kit but not another doesn't prove that much - the difference may be down to something in bsource models or Verilog-A which is different between the two sets of models (the C compilation is used for bsource/VerilogA code). I'd be surprised if its a path issue (although to be honest I didn't really look very hard since the versions involved were so archaic and the OS was relatively new.

Looking at the error you got from trying to re-run the installer, it appears that it has failed to identify the platform (hence the "tools./systemc" bit in the message - it should be tools.lnx86/systemc) although gcc must be installed somehow otherwise it wouldn't work with either kit (and I'm sure the TSMC kits are using bsource models at least).

You could try MMSIM14.1 (that's fine to use with IC5141). I would expect that the processes you're using also have IC61X PDKs available too (as far as I know all the TSMC 65nm and 90nm PDKs do nowadays, although you might have to explicitly request them). That said, you may not want to change from CDB to OA in the middle of a project since it needs a data migration... but regardless of this, you should be able to use the latest MMSIM version with IC5141 (I do this frequently).

Regards,

Andrew.