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 using e testflow, and encountering an interesting case that i would like to share and get your feedbacks.
I have an environment "A" with tf_domain == domain_a.
Under this environment i am instantiating an environment "B" which is testflow unit and have 2 sequence drivers which are also testflow units.
According to the Cadence test flow document, if the tf_domain field is untouched, it is determined to be (with soft constraint) to be the same as the nearest enclosing testflow unit, if there isn't such tf_domain is set to DEFAULT.
However, what i see is:
env_b.tf_domain = domain_a
env_b.seq_driver_1.tf_domain = domain_a
env_b .seq_driver_2.tf_domain =DEFAULT
How come the second sequence driver didn't got the same tf_domain value like the other units?
Moreover, the tf_domain field is declared as const, thus can not be changed after generation.
I will be happy to hear your feedbacks.
I've create a small testcase to try and reproduce your issue. However (as so often) it works fine here. I'm using 13.10.010-s and I only constrain the env tf_domain. All sub units (which are all testflow_units) inherit they tf_domain setting from the enclosing unit. If you want to force the tf_domain, you can use constraints, i.e.:(in the env)keep seq_driver_2.tf_domain==tf_domain;
In reply to hannes:
First, thanks for your quick response, I have tried your suggestion and it fix the problem.
Moreover, even constraining only the env "B" solve it.
It seems like the generation solver somehow ignored the soft constrain.
The explicit keep on the tf_domain solve this problem.
While we are talking on e testflow I want to ask one more question.
Does the usage of testflow make the e objection mechanism redundant ?
What are Cadence recommendation on this subject ?
In reply to myonlyscreen: