Last week, I attended my fourth System, Software, SoC and Silicon Degug conference (S4D) in a row. I think the silicon part is getting less attention these days, most of the papers were on how to debug software. Often with the help of hardware, and with an angle to how software runs in SoCs and systems. I presented a paper reviewing the technology and history of reverse debugging, which went down pretty well.
Category Archives: Articles
I just read a quite interesting article by Christian Pinto et al, “GPGPU-Accelerated Parallel and Fast Simulation of Thousand-core Platforms“, published at the CCGRID 2011 conference. It discusses some work in using a GPGPU to run simulations of massively parallel computers, using the parallelism of the GPU to speed the simulation. Intriguing concept, but the execution is not without its flaws and it is unclear at least from the paper just how well this generalizes, scales, or compares to parallel simulation on a general-purpose multicore machine.
I just had two articles published the Embedded Design part of the EETimes.
First, “Rethink your project planning with a virtual platform“, which talks about how virtual platforms can change your entire project planning. Essentially, by reducing project friction and risks related to hardware availability, software integration, and show-stopper bugs, you can make projects work much better.
Then we have “Transporting bugs with virtual checkpoints“, which is a shorter, popular science, version of the paper I published last year at S4D. This describes how you can use checkpointing in a virtual platform to communicate bugs across time, space, and teams.
This post features some additional notes on the topic of transporting bugs with checkpoints, which is the subject of a paper at the S4D 2010 conference.
The idea of transporting bugs with checkpoints is some ways obvious. If you have a checkpoint of a state, of course you move it. Right? However, changing how you think about reporting bugs takes time. There are also some practical issues to be resolved. The S4D paper goes into some of the aspects of making checkpointing practical.
One of the many nice effects of the Wind River acquisition of Simics is that I will be blogging as part of the Wind River Blog network. My first post there is up now, and it is a short (at least compared to a textbook, I admit it looks terribly long for a blog post) overview of how Simics works inside.
I think it is important for users of technologically advanced tools to know a bit of how they work. A classic example of this is compilers, where I taught an ESC class almost a decade ago which is my most popular piece of writing to date…
The paper will explain how we did Simics-style checkpointing in SystemC, using the GreenSocs GreenConfig mechanisms to obtain an approximation for the Simics attribute system.
I have a short article on multicore systems development and virtual platforms in the May 2009 issue of ECN magazine, over at www.ecnmag.com.
I have an article about ecosystem enablement for new hardware, co-authored with Richard Schnur of Freescale published in the December 2008 issue of EDA Tech Forum. The core concept is that a virtual platform solution makes it possible to get a new chip to market faster with better software support, and even enables virtual design-in of a chip at OEM customers before hardware becomes available. The article builds on our joint experience with the QorIQ P4080 launch in the Summer of 2008, where we had several operating systems and middleware packages in place at the moment the chip was announced. EDA Tech Forum requires registration, but it was still free, and there are many other good articles available.
I have an article appearing in the latest issue of Elektronik i Norden, about using virtual platforms for multicore computer systems. It is framed in the context of the Freescale multicore push, in particular the QorIQ P4080, and addresses the common issues of debug, execution speed, and the need to zoom in on details every once in a while.
I have an article at SCDSource.com, about how virtual platform creation needs to become more efficient. And the Virtutech current solution to that issue, DML, Device Modeling Language. There is no need to repeat the contents here, just head over to www.scdsource.com/article.php?id=166 to read it! I really think that DML has something to contribute in the world of virtual platforms. We need to find ways to be more efficient about how to create models, and that means creating a better programming language.
So what is SCDSource? Is is a quite good news and analysis site about the electronics industry, EDA, virtual platforms, and other themes close to my heart. SCDSource was started in October 2007, and have produced a series of good and interesting articles since. They tend to actually write articles and not just repeat press releases, and to report form interesting panels at events like DATE, ESC, and Multicore Expo.