Part One of our interview with Mentor chairman and CEO Wally Rhines looked at the mechanics of the company’s acquisition by Siemens. You can read that here. In Part Two, Rhines discusses more detail of the deal, particularly regarding R&D and EDA as part of a Siemens flow. He also addresses Mentor’s launch of the DRS360 automotive platform and the emerging challenge of design-for-security.
Pick and mix
There is always concern about monolithic design flows. Customers shy from putting all their eggs in one basket. Can a single-company flow ever offer the leading solution at every stage? With Mentor’s acquisition by Siemens, there is the prospect of one company now delivering essentially all the components needed for product delivery from initial concept to the factory gate.
For Wally Rhines though, that simply is not likely to happen.
“If you want front-to-back, we can do that. It won’t all be best-in-class though as long as you’re not pushing the technology, it will work pretty well,” says Rhines.
“But I have never found anyone who used a single company’s flow front-to-back in EDA. You want best-in-class. To do that everyone tends to have something from here and something from there. Take Calibre [Mentor’s market-leading DFM, physical verification and signoff suite]. A customer wants to look at Calibre integration into a Synopsys-led or a Cadence [Design Systems]-led flow. We don’t care. We think we’re better than the equivalents. You want best-in-class. We’ll supply.”
Rhines says that Siemens shares this philosophy of selling into “open environments”, supplying the connections to other companies’ software where necessary.
Wally Rhines talks collaboration on AI
That does not rule out software integration and collaboration on R&D across Siemens group companies. As Rhines noted in Part One, some areas of EDA research are specific in their needs so Mentor will chart its own path, but there are areas with more common ground to exploit. One is the combination of machine learning and AI.
“This is an area where you can see there’s going to be a lot of leverage early on. While Siemens has already gone deep into the area, we also bring something to contribute,” says Rhines.
He cites the specific example of Valor, the Mentor subsidiary focused on manufacturing automation for PCBs.
“We’re among the leading suppliers in that space – we’re working with Foxconn, we’re working with Flextronics – and we have a surprisingly deep infrastructure. We’ve 25 people [in Valor] of which 14 are PhDs working on algorithms for components sequencing on tape-and-reel to optimize the arm travel of the pick-and-place machines. We have gateways at the factory floor transmitting data into the cloud and doing deep learning and optimization on the product flow. We have traceability of every IC in every board for failure analysis, for checks against counterfeits, and more,” says Rhines.
“When it came to due diligence, that really impressed the Siemens people. They did not expect that level of technology within Mentor.”
Mentor is also flexing its muscles in machine learning in the automotive market. It has launched the DRS360 sensor platform for Level 5, fully autonomous vehicles. This uses AI to enable centralized processing of raw data from various sensors to provide real-time responses to safety-critical situations, while reducing power consumption and latency. No more MCUs alongside each sensor for a start.
The launch caught some observers cold. But as Rhines explains, it also came from expertise already within Mentor, particularly from the 2014 acquisition of XS Embedded (XSe), an automotive embedded software company initially working on infotainment systems.
“XSe were very successful and very good at what they did – they came out of Harman [International]. So, we started doing a lot of ADAS [advanced driver-assistance systems] as well. They allowed us to look back at infotainment and see where some problems with ADAS might lie as well,” Rhines says.
“Infotainment had quickly threatened to become a kludge. You had GPS from here, backscreen TV from there, surround-sound from somewhere else. It was piecemeal, and as we kept adding things, you could see that at a certain point it would become unsustainable to support the software with all these different pieces from different places.
“What the XSe people had realized in infotainment was that you needed to create a single embedded software environment to integrate all this stuff. They developed it and sold it, €100 per car.”
That team saw ADAS headed in the same kludgy direction.
“So we said, ‘Stop.’ We halted almost all the ADAS development, took our A-team and said, ‘Let’s first get the world’s best driverless car architecture and then you can develop ADAS pieces that fit into it.’ That’s how we got to DRS360.”
A few commentators argued that the launch could bring Mentor into competition with some of its EDA customers. Wally Rhines is phlegmatic. Take, for example, Mentor’s relationship with NXP, the leading automotive silicon supplier.
“I talk to [NXP president and CEO] Rick Clemmer every other week. He’s my old controller from TI. And [NXP board director] Peter Bonfield is also on our board. So there’s that,” says Rhines.
“But this instead encourages all the chip companies to work with us. From our history in automotive, we know that the carmakers pick the embedded software first, then they choose the tier ones and the ICs. In this market, we’re at the front end. For the IC companies, we make their chips look good. So it’s much more about collaboration.”
The trouble with Trojans
When we talked, Wally Rhines was about to deliver a lecture at New York University on design-for-security. As that and his DVCon China keynote show, he sees the topic as one that is reshaping the design cycle, and not just for silicon.
One element he sees becoming more prominent is the threat posed by embedded Trojans and how companies address their potential presence in silicon. It is an extension of a frequent Rhines observation: Verification is moving from simply verifying that a chip does what it is supposed to do to also verifying that it does not do anything it is not supposed to do.
For this particular threat – the best known example being the Stuxnet virus used against Iranian nuclear centrifuges – his immediate concern is that industry is not discussing the problem.
“I’ve gone to meetings and heard that [embedded Trojans] don’t seem to be a problem. If they are around, our customers who buy design tools don’t seem particularly troubled about it. But then if I tell this to guys at the NSA, they roll their eyes like I came out of La-La-Land,” says Rhines.
“So you have to figure that this is happening and that it’s being done by all the players. Why are there restrictions on some imported equipment? Well, you have to guess that it’s partly – at least – because you can embed Trojans in them.”
The problem as it stands takes on two initial forms. The first is cost. The second is indemnification.
“You can put things into your chip like PUFs [physically unclonable functions] that address the threat. But they cost money. They add to complexity. So, people don’t want to go through that if they don’t have to,” says Rhines. “But one of these days, something is going to happen and everybody will go, ‘OK, where’s the toolkit?’”
But once you offer a toolkit, Rhines notes that something else becomes inevitable: “At that point, the system builder will go to the chip supplier and say, ‘I’d like to add this sentence to the purchase order. It says that there are no Trojans built into your chips.’
“You’ll go to your lawyers and ask if that’s OK, and you know what they’ll say: ‘Are you kidding? Absolutely not. There’s no way in the world we’re doing that.’”
There are things you can do, Rhines notes. DARPA, the US defense research agency, is looking to promote one scheme – “But again, it’s a few cents off your margin.” – and once you know what a virus looks like you can scan for it (but then there will always be new ones).
“The way forward – and it’s not really happening yet to scale – is that we’ll have to agree across the industry on a set of best practices. Maybe DARPA takes us in that direction,” says Rhines. “But what you will have to offer ultimately, I think, will be an ability to say, ‘We followed these agreed best practices. We can’t say that there’s nothing in there for sure, but we did use these best practices to prevent it.’ For even that, though, we need the negotiation to start.”
Wally Rhines has been his own boss for 23 years, notwithstanding that he has always had a boardroom to answer to and the occasional attentions of a Carl Icahn. He is still a big wheel but now one within a huge conglomerate. How is he finding the change?
“It’s different. Yes, it’s rigorous. But in many ways, it doesn’t change. On the system design side, we’re all on the same page. We’ve been there for years,” he says. “But you do have to adapt.
“One really good thing is there in those [Siemens] guidelines for integration. The first one is, ‘The customer comes first.’ So, there you go.”