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 am going to executing following code for generation of oa file to verilog file automatically present editing oa file (schematic or layout). But I am getting the error "Cannot read library libname in cds.lib because it is not open or it does not exist" could you please help on this
procedure(verilog()cv = geGetWindowCellView()libname = cv~>libNamecellnmae = cv~>cellNameviewname = cv~>viewNames1 = ipcBeginProcess("oa2verilog -lib libname -cell cellname -view viewname -verilog viewname -recursive" "" nil nil nil "/remote2/test_proj/analog_project/tsmc/users/rambabu/oa2verilog1.log"))
*****************************************************************************Tool: oa2verilog 22.04.071*****************************************************************************Running: oa2verilog -lib libname -cell cellname -view viewname -verilog viewname -recursiveStarted: Mon Jan 16 15:52:35 2012 (Hostname: orange)ERROR: (OAVLG-10009): Cannot read library libname in cds.lib because it is not open or it does not existFinished: oa2verilogTime elapsed: 0.24 secondsCPU Time: 0.068989 secondsSystem Time: 0.036994 secondsPeak VM: 2158592 bytesMessages: 1 error, 0 warnings
Variables do not get magically evaluated in literal strings, so "libname" etc are treated literally in the string passed to ipcBeginProcess.
You'd need something like:
s1 = ipcBeginProcess(sprintf(nil "oa2verilog -lib %s -cell %s -view %s -verilog %s -recursive" libname cellname viewname viewname) "" nil nil nil "/remote2/test_proj/analog_project/tsmc/users/rambabu/oa2verilog1.log")
You'll also have to correct your code so that cellnmae is actually spelt as cellname (I decided not to repeat your typo in the code above).
The sprintf builds the string inserting the values of the variables into the appropriate places.
In reply to Andrew Beckett:
In reply to Myskill:
Have you any experience with programming at all? If so, I'd expect that you'd have some understanding of basic debugging techniques - such as checking that the data you're passing to functions is valid. You might want to attend a SKILL Programming class (or any programming class), and read the SKILL Language User Guide too.
I don't mean to be rude, but the error message fairly clearly tells you that the libname variable must be nil (i.e. not the library name). If you'd put some print statements in your code (or used the SKILL debugger) you could have checked that. The most likely explanation (assuming your code is essentially the same as that you posted earlier) is that cv is nil, because you're running with the current window not being your schematic or layout window - and hence geGetWindowCellView() is returning nil.
That said, I'd have expected that you'd see a warning in your CIW if this was the case (and that might have alerted you to the problem?):
*WARNING* (GE-2067): geGetWindowCellView: There is no graphical edit environment assigned to window(2) because the window is not a graphic editor window.
Make sure that your current window is a valid graphic editor window.
If it is a valid graph editor window, contact customer service to investigate this issue.
Either way, check the variables in your code, and ensure they're being set properly.