Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
System Development Suite Related Products A-Z
Cadence® digital design and signoff solutions provide a fast path to design closure and better predictability, helping you meet your power, performance, and area (PPA) targets.
Full-Flow Digital Solution Related Products A-Z
Cadence® custom, analog, and RF design solutions can help you save time by automating many routine tasks, from block-level and mixed-signal simulation to routing and library characterization.
Overview Related Products A-Z
Driving efficiency and accuracy in advanced packaging, system planning, and multi-fabric interoperability, Cadence® package implementation products deliver the automation and accuracy.
Cadence® PCB design solutions enable shorter, more predictable design cycles with greater integration of component design and system-level simulation for a constraint-driven flow.
An open IP platform for you to customize your app-driven SoC design.
Comprehensive solutions and methodologies.
Helping you meet your broader business goals.
A global customer support infrastructure with around-the-clock help.
24/7 Support - Cadence Online Support
Locate the latest software updates, service request, technical documentation, solutions and more in your personalized environment.
Cadence offers various software services for download. This page describes our offerings, including the Allegro FREE Physical Viewer.
The Cadence Academic Network helps build strong relationships between academia and industry, and promotes the proliferation of leading-edge technologies and methodologies at universities renowned for their engineering and design excellence.
Participate in CDNLive
A huge knowledge exchange platform for academia to network with industry. We are looking for academic speakers to talk about their research to the industry attendees at the Academic Track at CDNLive EMEA and Silicon Valley.
Come & Meet Us @ Events
A huge knowledge exchange platform for academia. We are looking for academic speakers to talk about their research to industry attendees.
Americas University Software Program
Join the 250+ qualified Americas member universities who have already incorporated Cadence EDA software into their classrooms and academic research projects.
EMEA University Software Program
In EMEA, Cadence works with EUROPRACTICE to ensure cost-effective availability of our extensive electronic design automation (EDA) tools for non-commercial activities.
Apply Now For Jobs
If you are a recent college graduate or a student looking for internship. Visit our exclusive job search page for interns and recent college graduate jobs.
Cadence is a Great Place to do great work
Learn more about our internship program and visit our careers page to do meaningful work and make a great impact.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
Overview All Courses Asia Pacific EMEANorth America
Instructor-led training [ILT] are live classes that are offered in our state-of-the-art classrooms at our worldwide training centers, at your site, or as a Virtual classroom.
Online Training is delivered over the web to let you proceed at your own pace, anytime and anywhere.
Exchange ideas, news, technical information, and best practices.
The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.
It's not all about the technlogy. Here we exchange ideas on the Cadence Academic Network and other subjects of general interest.
Cadence is a leading provider of system design tools, software, IP, and services.
I am new to Cadence SKILL. I am trying to understand a SKILL script file containing many procedures. Many of these procedures use a variable which holds a constant list. But it doesn't seem to be assigned anywhere in the script file. Can you suggest any possible place from where it could be assigned? Is there any way in SKILL to import variables from another file?
By default all the SKILL vars are global.
To identify where there were defined, may not be an easy task:
You have to look for calls like load(...) and/or loadi(...) in your code , or in CDS.log file.
Vars can also be defined in context ("compiled") files, using loagContext() functions - here it is even more dificult to track.
After identifimg all those files use "grep" command to find the lines where the var was defined.
In reply to marcelpreda:
Thanks for your reply. I checked the log file. It says loading many .il and .cxt files. But some of the files only have their names specified, not the complete path. Any info to locate them would be very helpful.
In reply to hrishikesh:
If you use this code:
procedure(CCFwhereVarSet(varName newValue) printf("Variable %s set to %L in %L\n" varName newValue get_filename(piport)) ; stacktrace() newValue)
and then do:
(replace 'theVarYouWantTo Check with whatever name you're looking for), it will tell you the file where it is set (if a SKILL file; not if set in a context file unfortunately). You could also uncomment the stacktrace() to tell you which function it was in when the variable was set.
In reply to Andrew Beckett:
Thanks, Andrew. I figured out that the variable is loaded through a load() function in one of the procedures. Should your method still work?
Yes. The setguard sets a "guard" function which gets called whenever the named variable is set, and that guard function uses get_filename(piport) to see what file is being read at the time the variable is set. So if it is set within a file that is being loaded, it should tell you. If the global variable was instead directly set inside the procedure, it wouldn't tell you - but the stacktrace() would hopefully reveal which function is was being set in.
Just testing setguard() procedure; it is really helpfull.
I had no idea that we have such an usefull "tool".
I'm having a similar problem, so I thought I'd add on to this thread. I have an existing library that I wanted to copy to a new library and change the reference libraries to the new library. I did this using the "copy wizard," and it seemed to work for the most part. However, I have SKILL scripts where I'm trying to create PCELLs in this new library, and I'm running into problems.
I am using an optional input parameter for my script called "dbDelta" which is set at the top of the script (before the "let" statement) using the following syntax: (dbDelta list(1.0 1.0))
It was causing errors that it's never caused before, so I used the setguard() function mentioned above to see where this variable was being changed. The setguard() function told me:
Variable dbDelta set to '('('('('((1.0 1.0)))))) in "(path of script I'm working with)"
It seems that the error is a result of copying the old library to a new library and using the "update instances" option in the "copy wizard". Nowhere in my script am I setting the value of dbDelta other than the top, and if I change the name of dbDelta to anything else, the problem goes away. Thoughts?
In reply to mtwadeCU: