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 try to use Cadence gpdk045 but unable to attach the technology library to a newly created library with error:
The binary file 'tech.db' was not found in library 'gpdk045'
However the file is there in gpdk045 directory. I have installed the kit and created the cds.lib according to the instructions in reference manual. These are the steps I followed:
1) In .bashrc set the environment variables
but I also have another variable: export CDS_ROOT=/home/eda/ic610 and hope it does not create problem.
2) In the work directory I created a cds.lib file with following entry
3) and finally created a link in the work directory
ln -s /home/user/edasrc/cadence_pdk045/gpdk045_v_3_5/models
Where is the problem and why I am unable to attach the technology library? In CIW it says Loaded gpdk045/libInit.il successfully!
Maybe the permissions are incorrect?
However, if you're using IC610, I think the likely reason is that gpdk045 is built for a newer version of OA, and you can't open it in such an old version because it's not compatible in that direction.
I don't have IC610 handy, but in IC611 (IC126.96.36.1990.61), I get:
*WARNING* techGetObjTechFile: Tech database contains features defined in OpenAccess data model version 4 (release 22.04.001 or above), and cannot be opened by software that is built against OpenAccess release 2.2-p079 and supports data model version 3
It's quite possible that in IC610 it didn't give such a friendly message. So you really need to install something newer.
In reply to Andrew Beckett:
I am having the same problem with gpdk090 and NCSU FreePDK45.
And it is not the problem of release version...
this is meant to install for ic610 and oa2.2
In reply to emax:
Which version of gpdk090 are you using, and where did you download it from?
It is version : 4.6, build date: 10-FEB-2011 and downloaded from Cadence website.
Also when I right click the newly created library, it does not show the option to attach a technology library and have to use CIW options to attach but it fails. Before the pop-up error message appears, the CIW shows successful initialization of PDK.
I have this problem with NCSU FreePDK45, gpdk090 and gpdk045 but the NCSU CDK works perfectly fine.
I am sure it is the setup problem but not sure where to look into.
Well, your previous post pointed at a document from an old version of gpdk090 (version 3.9) from 2007. The version you're using is much newer (version 4.6 from 2011). If you look at docs/gpdk090_pdk_referenceManual.pdf from within the 4.6 version of the PDK, it clearly says that this is built for IC615, not IC610.
IC610 was not using OA2.2 (it was an older version, 02.02 - the numbering scheme changed at some point - current versions are using 22.41). The major change happened between IC611 and IC612. Still, that's academic, since it says that gpdk090 v4.6 is for IC615.