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Q&A: Zulu Embedded Builds on OpenJDK

April 28, 2015
Azul Systems recently launched Zulu Embedded, a new offering for developers and manufacturers in the embedded, mobile, and Internet of Things (IoT) markets requiring 100% open-source, customizable, reduced-footprint, and standards-compliant Java SE runtimes and development solutions. Here’s what Azul’s CEO, Scott Sellers, has to say about it.

Scott Sellers, CEO and Co-Founder, Azul Systems

Java still resides everywhere from the enterprise to the desktop. It’s in embedded applications as well, and there are many sources. Azul Systems recently launched Zulu Embedded, a new offering for developers and manufacturers in the embedded, mobile, and Internet of Things (IoT) markets that require 100% open-source, customizable Java.

I talked with Scott Sellers, CEO and Co-Founder of Azul Systems, about their latest release.

Wong: Tell us a little about Zulu Embedded.

Sellers: Zulu Embedded is a new offering from Azul Systems targeting the embedded marketplace and the IoT. It is a 100% open-source, flexible, customized build of OpenJDK for developers and manufacturers who wish to use Java and want to leverage open-source technologies and/or an alternative to Oracle.

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Wong: What is OpenJDK?

Sellers: The OpenJDK is as its name infers –a 100% open-source Java Development Kit and Java runtime. OpenJDK itself is source-code-only, and is the reference implementation for Java SE (Standard Edition). OpenJDK is built in the open community, with strong contributions from Oracle, IBM, Red Hat, Azul, and others. Oracle takes the code developed in OpenJDK in-house, and then releases it as its closed-source/proprietary HotSpot product.

Zulu and Zulu Embedded are certified, 100% open-source binary builds of OpenJDK. The OpenJDK project does not release (or support) any binary distributions. Azul’s Zulu is the only multi-platform build of OpenJDK, supporting a wide variety of operating systems, hypervisors, containers, etc.

Wong: What are the advantages of using Zulu Embedded?

Sellers: There are several:

First, Zulu Embedded is 100% open source. No licenses to buy or acquire, no use or distribution restrictions.

Second, it is flexibly priced—no need to count processor cores, units shipped, etc. Azul works with its embedded customers on a variety of very flexible support and customization plans.

Third, it can be customized to fit a specific OS/configuration/ bitness/ headless/-ful/ footprint without costly up-front payments as may be required from Oracle.

Finally, it meets all Java SE standards for Java versions 6, 7, and 8, and is tested using the Community Technology Compatibility Kit (TCK) as well as Azul’s rigorous test suites.

Wong: What are the resource requirements and what platforms will Zulu Embedded run on?

Sellers: Zulu Embedded is available now for 32- and 64-bit x86 architecture devices, and has been shipping since October 2014. ARM devices are on Azul’s near-term roadmap. Operating environments include a wide variety of Linux offerings, with Wind River’s being the most recent addition, plus Windows and Mac OS X.

Wong: How does Zulu Embedded relate to IoT?

Sellers: The IoT is comprised of many systems, ranging from extremely simple sensors to huge Cloud-based server configurations. The ability to customize Zulu Embedded to meet the footprint needs of the specific application allows Java to be used in extremely low-cost/memory-scarce devices. And the 100% open-source nature of Zulu Embedded allows for it to be used in even the most cost-constrained deployments.

With Zulu Embedded, Java and its 10 million developers worldwide are now much more available for practical use in designs targeting the IoT.

Wong: How does Zulu Embedded fit with Azul’s other offerings?

Sellers: Zulu Embedded is a very natural extension of Azul’s Java runtime offerings.  As a company 100% focused on Java and the JVM, and highly skilled at supporting mission-critical applications 24x7, releasing a flexible, embedded-friendly Java runtime and development kit is a logical next step.

Wong: What about licensing and support costs and issues?

Sellers: Since Zulu Embedded is 100% open source, there are no licensing charges. Support and customization costs are negotiated to ensure they meet the pricing and configuration needs of Azul’s Embedded customers.

Azul’s Support team is globally distributed, battle-tested from over 10 years of supporting a demanding and performance-sensitive customer base, and 100% focused on Java and Java runtime troubleshooting.

Wong: When will Zulu Embedded be available?

Sellers: There are well over two million Zulu Embedded devices in the field today, and the installed base is growing rapidly. GA versions of Zulu Embedded will begin shipping in October 2014.

Wong: Where can I learn more about Zulu Embedded and download it?

Sellers: Visit http://www.azulsystems.com/products/zulu-embedded for more information on Zulu Embedded.  Zulu can be freely downloaded from http://www.azulsystems.com/products/zulu/downloads.

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About the Author

Scott Sellers | CEO and Co-Founder

With more than 23 years of experience in building high-technology companies and delivering advanced products to market, Scott provides the overall strategic leadership and visionary direction for Azul Systems.

Prior to co-founding Azul Systems, Scott founded 3dfx Interactive, a graphics processor company. Scott served at 3dfx as Vice President of Engineering, CTO, and as a member of the board of directors, delivering seven award-winning products and developing 14 different chips. After a successful initial public offering, 3dfx was later acquired by NVIDIA Corp.

Scott has been granted eight patents in high-performance graphics and computing, and is a regularly invited keynote speaker at industry conferences

About the Author

William G. Wong | Senior Content Director - Electronic Design and Microwaves & RF

I am Editor of Electronic Design focusing on embedded, software, and systems. As Senior Content Director, I also manage Microwaves & RF and I work with a great team of editors to provide engineers, programmers, developers and technical managers with interesting and useful articles and videos on a regular basis. Check out our free newsletters to see the latest content.

You can send press releases for new products for possible coverage on the website. I am also interested in receiving contributed articles for publishing on our website. Use our template and send to me along with a signed release form. 

Check out my blog, AltEmbedded on Electronic Design, as well as his latest articles on this site that are listed below. 

You can visit my social media via these links:

I earned a Bachelor of Electrical Engineering at the Georgia Institute of Technology and a Masters in Computer Science from Rutgers University. I still do a bit of programming using everything from C and C++ to Rust and Ada/SPARK. I do a bit of PHP programming for Drupal websites. I have posted a few Drupal modules.  

I still get a hand on software and electronic hardware. Some of this can be found on our Kit Close-Up video series. You can also see me on many of our TechXchange Talk videos. I am interested in a range of projects from robotics to artificial intelligence. 

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