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.
Get email delivery of the Cadence blog featured here
This week Cadence and Virtutech announced a collaborative effort to bring together the Virtutech Simics virtual platform with the Cadence ISX software testing system. This is a very interesting combination of technologies, clearly demonstrating how virtual platforms make it possible to test software in ways that are plain impossible on physical hardware. With a virtual platform, it is possible to systematically subject a system software stack to extreme (and normal) working conditions, trying to provoke errors and find conditions where the software breaks.
We are not just doing regular automated software testing as you would do any host, but also changing parameters for the hardware on which the software runs. In this particular example we are showing at CDNLive! EMEA, we have a time-to-result latency parameter that determines the time it takes for the hardware to issue an interrupt to the software. The software behaviors demonstrated with latencies at 1 ns and 1 s are quite different... in the fast case, the driver software needs to ensure it can handle an interrupt immediately after starting an operation. In the slow case, the driver has to put the calling process to sleep and wake it up later so that the rest of the system can go on working while we wait for the hardware unit to complete. Try doing that on hardware...
Some other obvious examples of how hardware can be controlled to stress software is to vary the number of processors, the speed of the processors, or the size of memory in a system. Isn't it interesting to find out what REALLY happens if you have 2^64 bytes of physical RAM? Will the OS suffer an integer overflow and report -2^63 bytes? Or if all processors run at different clock frequencies? It tends to reveal all kinds of bad assumptions in code. If you add in the ability to inject known bad results from hardware, or turning off units to simulate local hardware failures, you have a very powerful tool to exercise software correctness and robustness. Putting a space-bound computer board in a radiation chamber to check robustness for transient errors is not quite as easy as injecting a sprinkle of memory errors in a simulation.
Thinking about it... this is how hardware testing has always been done: create controlled experiments, often looking for corner cases. For software, that has not really been possible since the execution hardware was always fundamentally uncontrollable. But with a virtual platform, suddently the hardware becomes controllable. And the possibilities become boundless.
The Cadence ISX integration with Virtutech Simics is just a first step, and we have only scratched the surface of a very exiting topic. The software that was used to have a nice and cushy environment to run needs to wake up and realize that it will be subject to something worse, way worse, than the real thing.
This Team ESL posting is provided by Dr. Jakob Engblom, Technical Marketing Manager for Virtutech. He holds an MSc in Computer Science and a PhD in Computer Systems from Uppsala University. He has been with Virtutech since 2002, and has worked with embedded software, real-time programming, and computer systems simulation for the past decade.