As our products grow, the simulations to verify them grow exponentially. Fortunately, those new more powerful chips are now running our computers. The only way to keep ahead is to partition the design and simulate smaller blocks first. Once that is done, you can simulate the entire chip using functional models instead of full designs of the blocks. Timing analysis is still the big issue at the end of the design.
1) engineers complain plenty in my experience - but I guess company culture has an effect upon that.
2) they also quite like to fix issues themselves using scripting etc cos they get a fix sooner and some EDA companies are quite slow to respond or just don't care unless big bucks are attached
3) simulation comes and goes as an issue. In the 90s it was a big bottleneck then cycle based sims, formal equivalence checking and STA came in and made them less relevant. Now chips have grown enough to take up the slack again
4) is simulation the best way to find the answer the designer is looking to answer? It was not the best way to check logic timings (STA is better), it was not the best way to check that synthesis had worked (equivalence checking is better). So do some of these sims have a better alternative eg protocol checking, assertion checking, formal methods based upon the intent of the design?
5) simulation is tough to break across processor cores - although this is easier with shared memory than it was with separate chips. Often the solution here is to simulate at a much lower level but that requires a finer granularity of models to check against and that may require a change in the the way the designers and architects work. NVidia used to (in the 90's) run sims against C models - but the C models were quite high level - perhaps they need to split these down a bit to speed stuff up?
He is right. SPICE and HDL simulators are still single-threaded. EDA companies tend to buy the main components and add things onto them, they do not tend to innovate at the basic tool level.
Another issue is interoperability, it would be natural to link SPICE and HDL in a single run with multitasking but nobody will implement it.
Possibly the revenue model is against making the tools run faster since the big players would sell less seats.
It is possible for a couple people to put together a web application with sign-up, payment processing, etc. in a week-end.
There has not been this kind of leverage and productivity gain coming out of the EDA and IC industries but it is coming.
You just have to look at Upverter(http://upverter.com/) and (shameless self-promotion) Fortylines(http://fortylines.com).
Verification and QA are crucial steps to make a good product. I am glad to hear it.
There is no doubt the complexity of multicore would make the verification task a lot harder and the time would be much longer. Tools become very critical to maintain the streamline of the "production line". I'm very interested in learning what steps Synopsys are doing to help the effort.
I chuckled at the notion of "methodology staffing." In the IC development teams I have worked on, methodology improvements are usually tested, proven and adopted during the course of a product development -- and they are sometimes at odds with what the official corporate CAD empire-mandated methodology is supposed to be.
Rarely does one size fit all designs, but it is the nature of corporate CAD empires to roll out a one-size-fits-all methodology (actually two -- one for digital and one for AMS) for all designers to adopt.
A major issue in this love-hate relationship is that chip designers are competent EDA users but not necessarily EDA experts, while methodology teams are made of EDA experts who aren't (usually) chip designers.
Thus, whenever a new tool, script or methodology enhancement is introduced -- especially if it is mandated -- a designer's response is sometimes "tell me again how many tapeouts those guys have done? Yeah, that's what I thought!"
For verilog tinkerers, putting your design in the cloud is not an issue when the code is already hosted on github. What matters is access to the underlying IT infrastructure, simulation and verification tools at the lowest cost possible.
For IC companies that care a great deal about running local, it is straightforward to deploy any SaaS such as fortylines on a private cloud. We ship openstack-ready VMs in that case.
There is a trade-off between cost/ease-of-use/security that is different for everyone. Building EDA tools as cloud services enables the flexibility required to adapt to every situation.
Blog Doing Math in FPGAs Tom Burke 15 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...