PVS Extraction Issue - Not finding PVS or QRC tab in Virtuoso Layout to do parasitic extraction

In the AMS Hit Kit they show the paths that need to be set up for extraction. The snippet is shown below:

##########################################################
# Cadence EXT / QRC path. Replace the /cad/cdsext15_26_s603 string by your installation path
##########################################################
setenv PVS_HOME /cad/cdsext15_26_s603
set path=($path $PVS_HOME/bin)
if ( $?LD_LIBRARY_PATH == 0 ) then
setenv LD_LIBRARY_PATH $PVS_HOME/tools/lib:/lib:/usr/lib
else
setenv LD_LIBRARY_PATH $PVS_HOME/tools/lib:${LD_LIBRARY_PATH}
endif

In my .aliases file we have the PVS_HOME path set up. Then why am I not able to see a PVS/QRC tab in CADENCE Virtuoso layout to do extraction? As shown in the screen shot there is no option to run Extraction under Assura Tab. But we ran DRC with Assura.....

First of all, there's no need to set LD_LIBRARY_PATH for PVS. I initially wondered whether it was because you had /sbin in your path before the PVS binary directory (I assume) but that works OK because the detection is done by looking in all the paths in $PATH and checking for the presence of a few executables such as "lvsbrowser".

What do you get if you type "which lvsbrowser" and "which pvsnvn" in the terminal which you started Virtuoso from?

Andrew

Both the commands show Error eval Unbound variable as shown in the snapshot

Shown below is the actual paths for the PVS_HOME:

##########################################################
# Cadence EXT / QRC path. Replace the /cad/cdsext15_26_s603 string by your installation path
##########################################################
setenv PVS_HOME /util-cse/cadence/ic/
set path=($path $PVS_HOME/bin)
if ( $?LD_LIBRARY_PATH == 0 ) then
setenv LD_LIBRARY_PATH $PVS_HOME/tools/lib:/lib:/usr/lib
else
setenv LD_LIBRARY_PATH $PVS_HOME/tools/lib:${LD_LIBRARY_PATH}
endif

I didn’t ask you to type it in the Virtuoso window (CIW) because that would fail with an error because what I asked you to type was not a SKILL command. 

Please type it in the terminal window as I asked. 

Andrew

I didn’t ask you to type it in the Virtuoso window (CIW) because that would fail with an error because what I asked you to type was not a SKILL command. 

Please type it in the terminal window as I asked. 

Andrew

Sorry for the misunderstanding. I typed the commands in the terminal from which I opened  Virtuoso as shown in the screenshot. Nothing seemed to happen....

That's because you have run "ams_cds" in the foreground and so it's blocking the terminal - so typing anything in at the terminal won't do anything because the "ams_cds" program is running. That's pretty basic UNIX knowledge...

Anyway, you'd need to run this in the terminal when you're not running "ams_cds" at the same time, or you have run it in the background by doing:

ams_cds -tech c35b4 &

(the ampersand backgrounds the job, giving the terminal prompt back again).

Andrew 

Hi Andrew,

Thanks for your time. I am new to UNIX enviornment. So pardon my limited knowledge. I had run the commands you mentioned from the directory from which I run CADENCE from. They also had returned "Command Not found" responses as shown in the screenshot below:

OK, so you haven't set the UNIX PATH to include PVS - if it's not in your path, it won't appear in the UI.

You referred to the path setting in your earlier post in the thread, but presumably that file is not being sourced. That's what you need to fix.

Andrew

Hi Andrew,

Thanks for the quick response. Really appreciate the help.

How do we know whether PVS is installed in that path?

As I mentioned earlier the PVS_HOME path is already set as /util-cse/cadence/ic/. So I was assuming the PVS Tool must be in there.

If I go inside /util-cse/cadence/ic/bin I can see 2 files pvs4dfii and pvs4dfiiver which has pvs names in it. Does this show PVS is installed?

Ah, I just realised what's wrong in what you've. You've set PVS_HOME to the IC installation. It needs to be to an installation of PVS (see http://downloads.cadence.com - you'll see that there is PVS191, PVS201 and PVS211). If you don't have it installed somewhere, you'll need to install it first, and point to the right software. That's your problem...

Regards,

Andrew