Cadence® system design and verification solutions, integrated under our Verification Suite, provide the simulation, acceleration, emulation, and management capabilities.
Verification 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.
More Support Log In
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 technology. 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 want to generate a snap-shot with name house and simulate it later.
To generate snap-shot, I use the following command,
irun -elaborate -snapshot house source.sv
This results in a folder INCA_libs/house.lnx86.11.10.nc
To simulate the snap-shot house, I use the following command,
irun -r worklib.house:sv
I get an error stating that the folder INCA_libs/irun.lnx86.11.10.nc is missing.
I see that even though I use the -r option with irun, it does not use the snap-shot house.
I also tried the -R option, but even with that I get the same error.
I see that if snap-shot name is chosen as "irun", this error is not seen.
How do I make irun simulate the snap-shot house (snap-shot name other than "irun")?
I tried it using Incisive 12.20, not 11.10.
irun -r house
irun: *N,NOSNPR: The default work directory (./INCA_libs/irun.lnx86.12.20.nc) is missing. -r house was used and a matching -snapshot house scratch directory was found. irun will imply the option -snapshot house.Loading snapshot worklib.house:sv .................... Donencsim> source /p/icom/eda/cadence/incisive/12.20.002/tools/inca/files/ncsimrcncsim> runncsim: *W,RNQUIE: Simulation is complete.
That is, I got a NOTE from irun, not an error. It still ran.
If I run it like this:
irun -r house -snapshot house
I did not get even the note.
In reply to Shalom B:
Even with 11.10, irun -r house -snapshot house gives the correct output.
Earlier, I used irun -r house which gave error. On adding, the -snapshot option, the error goes aways.
But when we look at the output of irun -helpall, we see that -snapshot option is used to generate a snapshot. And in this case, we do not want to generate a snapshot, but want to simulate an already existing snapshot. So I am not sure if using -snapshot option in this case is correct.
In reply to Abid:
The answer is in the documentation.
In the irun User Guide, it says,
Note: If you run irun with the -snapshot option (or its alias -name) to specify a name forthe simulation snapshot, you must include the original -snapshot option when you invoke
the simulation snapshot, you must include the original -snapshot option when you invoke
irun with irun -r snapshot_name.
-helpall just gives you a one-line description, not all the information.
That answers my question.
Thanks for your help Shalom.