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Graham Bell
Graham Bell
Graham is VP of Marketing at Real Intent. He has over 20 years experience in the design automation industry. He has founded startups, brought Nassda to an IPO and previously was Sales and Marketing Director at Internet Business Systems, a web portal company. Graham has a Bachelor of Computer … More »

Calypto Design Systems: A Changed Partner

September 17th, 2015 by Graham Bell

Calypto Design Systems was embraced by Mentor Graphics this week.  Founded in 2002, the company was born out of discussions between founder Devadas Varma and Dado Banatao, partner at Tallwood Venture Capital.  By early 2005, it had raised $22 million in venture capital, and had 42 employees, 18 with PhDs.  It was tackling equivalence checking (SLEC) between ESL and RTL design representations.

In 2011, Mentor bought a 51% interest in the company and sold Calypto its Catapult-C synthesis technology, which seemed like a good match to their SLEC tool.  With Calypto’s growing success, it was natural that Mentor would pull them into their fold.

For several years, Calypto Design Systems and Real Intent have co-operated in support of verification flows for mutual customers.  Both companies shared the same distributor is Korea.

One flow we had jointly announced was our Ascent Lint with their Catapult synthesizer.  Catapult lets designers use industry standard ANSI C++ or SystemC to describe functional intent at the ESL level. From these high-level descriptions, Catapult automatically generates production quality RTL.  Ascent Lint ensures Catapult-generated RTL code is lint clean and error free for a safe and reliable implementation flow from RTL to GDSII layout.

Calypto also has the PowerPro tool which is an automated RTL power optimization and analysis product that identifies and inserts sequential clock gating and memory enable logic into synthesizable Verilog and VHDL designs.  You can see it on the right side in the following flow diagram from an illustration used at the 2014 Design Automation Conference.


In this flow, the Real Intent Meridian CDC tool checks that signals crossing asynchronous clock boundaries are correctly registered and synchronized in the RTL code.  In this flow, it is used to verify that any optimizations done to your RTL have not broken the assumptions for CDC synchronization.

Partnerships are not just about technology, they are also about people.  I have had the pleasure to work with Mark Milligan, VP of Marketing and his predecessor Shawn McCloud in promoting these flows.  As well, I want to thank Mathilde Karsenti, Marketing Programs Manager, who brings a passion for excellence in her work and made our joint promotions a success.

Now that Calypto is part of Mentor Graphics the co-operation with Real Intent will take a different form.  But the drivers for the co-operation are still very much current.  RTL generated from a high-level synthesis tool or modified by power optimization needs to be verified to ensure that inadvertent errors have not been introduced.  Real Intent will continue to work with its partners in the industry to sign-off their RTL prior to synthesis and implementation.

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