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 just want to ask how can I run dbOpenCellViewByType in ocean mode? Meaning, I don't want to load my SKILL or OCEAN file having dbOpenCellViewByType function in GUI mode? How can I run this in ocean mode? Because I' am having errors such as below when I run it in ocean mode:
*WARNING* (GE-2106): noname failed because there is no window assigned to cellview id db:0x152fcf92 (myLibrary/myCell/myView). Make sure the cellview is opened in a valid graphic editor window.
Thank you very much in advance.
Which version are you using? In IC61x "ocean" is really the same as virtuoso, and so dbOpenCellViewByType is available to use in an ocean session. However, the warning that you note does not appear to be directly from dbOpenCellViewByType, since this opens a cellview non-graphically in virtual memory, with no need for, or reference to a window. Can you share the context of dbOpenCellViewByType in your code so that we can see where the warning might be coming from?
In reply to skillUser:
I 'am using version IC126.96.36.1990.132
Here is the context of my dbOpenCellViewByType:
dbOpenCellViewByType(my_lib my_cel "schematic" "" "a")
Thanks and Regards,
In reply to Reinice:
How can I determine the contextId of cellview in dbOpenCellViewByType?
The contextId argument is obsolete - it's still there for compatibility with older releases which did support this (that said, I never used it even in the past).
The only explanations I can think of for the "ge" warning is that you either have some dd triggers (registered with ddRegTrigger) which are doing something on data load, or that there's a pcell in your design which is using an inappropriate function.
Unfortunately it's not that straightforward to figure out where a warning comes from.
In reply to Andrew Beckett:
Is there another way where I can run my SKILL file in ocean session and not encountering warnings just like mentioned above?
When I run my SKILL file in CIW I' am not encountering such warnings.
Here is the flow of my SKILL file:
1. I open a cellview using dbOpenCellViewByType
2. I instance the Circuit Under Test(ex. Bandgap) in the cellview I just opened using dbCreateInst.
3. I instance the stimulus(ex. vsource, vpwl, gnd) needed to test the Circuit Under Test using also dbCreateInst.
4. I wire the stimulus and Circuit Under Test using schCreateWire.
You can force the warnings to be swallowed by redirecting woport somewhere else. For example:
You may be able to call getWarn() after the call which generates the warning - but I still don't understand why you are getting this warning from dbOpenCellViewByType().
Actually I' am not really sure if it is dbOpenCellViewByType that's causing the warning.
I' am just wondering why my SKILL file runs ok in CIW(cellview that will be open by dbOpenCellViewByType must be open) and when I run it in ocean session and in CIW(cellview is not opened), it is creating warnings such as above.
Is there a need for a cellview to be opened in a valid graphic editor window for dbOpenCellViewByType to function properly?
Are there any alternatives not requiring for a cellview to be opened?
There is absolutely no need for there to be a graphic window available to use dbOpenCellViewByType - it's completely below the GUI layer.
It's possible that some of your sch.* functions might have a UI dependency - it depends on what you're doing. Even then, I'm slightly surprised... How are you doing the check-and-save?
Here are the list of the sch* functions I've used and it's context:
3. schCreateWire(cvId "route" "full" list(mydx:mydy mydx_CUT:mydy_CUT) 0.0625 0.0625 0.0)
4. schCreatePin(cvId inputCVId inst_net2 mytype nil mydx:mydy "R0")
cvId = dbOpenCellViewByType(my_lib my_cell "schematic" "" "a")
inputCVId = dbOpenCellViewByType("basic" "ipin" "symbol" "" 'r)
inst_net2 = net of the terminal
my_type = "input" or "output"
a. How can I know if a sch* function is UI dependent? If it is UI dependent, are there any counter part that does not require UI dependecy? I want my SKILL file to run in ocean session and not only in CIW(requiring cellview to be opened).
b. This is how I do check and save:
Are there any alternatives to do check and save using SKILL?
I 'am not encountering anymore warnings when I removed
in my SKILL file. Also when I change the fifth argument of dbOpenCellViewByType to "w" it overwrite the contents of the schematic.
Thank you very much for the help and support.