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Observations from Uppsala Computer Simulation, Virtual Platforms, Embedded Programming, Multicore and More (by Jakob Engblom)

Monthly Archives: August 2010

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S4D Paper on Transporting Bugs with Checkpoints

2010 August 31 19:40 / 2 Comments / Jakob

I have a paper about “Transporting Bugs with Checkpoints” to be presented at the S4D (System, Software, SoC and Silicon Debug) conference in Southampton, UK, on September 15 and 16, 2010. The core concept presented is to leverage Simics checkpointing to capture and move a bug from the bug reporter to the responsible developer. It is a fairly simple idea, but getting it to work efficiently does require that some things are done right. See the longer Wind River blog posting about this topic for a few more details.

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Posted in: appearances, computer simulation technology, conferences, EDA, virtual machines, virtual platforms, virtualization, Wind River Blog / Tagged: Checkpointing, debugging, S4D

Wind River Blog: Interview with a Virtualization Researcher

2010 August 29 08:44 / Leave a Comment / Jakob

Past Friday, I posted a new blog post in my Wind River blog. It is an interview the PhD student Girish Venkatasubramanian from the University of Florida. He is doing research on virtual machines/hypervisors and how they can be implemented more efficiently by making fairly small changes to the architecture of memory management units.

Read More →

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Posted in: computer architecture, virtual machines, virtual platforms, virtualization, Wind River Blog

VirtualBox SMP

2010 August 20 19:04 / Leave a Comment / Jakob

I listened to an interesting FLOSS Weekly interview with Adam Hall and Achim Hasenmuller of VirtualBox. For someone interested in virtual machines and hardware simulation, the interview was full of interested tidbits. I think the best part was the discussion on multiprocessing in Virtualbox.

Read More →

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Posted in: multicore software, virtual machines / Tagged: CECsim, SMP, VirtualBox

Wind River Blog: Shiny Old Hardware

2010 August 20 12:10 / Leave a Comment / Jakob

I just posted a blog post called “Shiny Old Hardware” at my Wind River blog. In it, I discuss why modeling old computer hardware to build virtual systems make sense. Virtual platforms are just not all about the next-generation stuff.

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Posted in: embedded systeme, virtual platforms, Wind River Blog

Multicore is not That Bad

2010 August 10 19:24 / 1 Comment / Jakob

I recently read a couple of articles on multicore that felt a bit like jumping back in time. In IEEE Spectrum, David Patterson at Berkeley’s parallel computing lab brings up the issue of just how hard it is to program in parallel and that this makes the wholesale move to multicore into something like a “hail Mary pass” for the computer industry. In Computer World, Chris Nicols at NICTA in Australia asks what you will do with a hundred cores – implying that there is not much you can do today. While both articles make some good points, I also think they should be taken with a grain of salt. Things are better than they make them seem. Read More →

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Posted in: multicore software / Tagged: Chris Nicols, David Patterson, hypervisor, Simics

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