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09 June 2009
Parallel Scalability Isn’t Child’s Play, Part 3: The Problem with Fine-Grained Parallelism
In the last blog entry in this series , I introduced the model for parallel program scalability proposed by Neil Gunther, which I praised for being a realistic antidote to more optimistic, but better known, formulas. Gunther’s model adds a new parameter Read More...
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02 May 2009
Are we taking advantage of Parallelism?
Recently, a colleague of mine, Mark Friedman, posted a blog titled “ Parallel Scalability Isn’t Child’s Play ” in which he reviewed the merits of Amdahl Law vs. Gunther’s Law for determining the practical limits to parallelization. I would not argue with Read More...
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29 April 2009
Parallel Scalability Isn’t Child’s Play, Part 2: Amdahl’s Law vs. Gunther’s Law
Part 1 of this series of blog entries discussed results from simulating the performance of a massively parallel SIMD application on several alternative multi-core architectures. These results were reported by researchers at Sandia Labs and publicized Read More...
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18 September 2008
Mainstream NUMA and the TCP/IP stack: Final Thoughts
This is a continuation of Part IV of this article posted here . Note that a final version of a white paper tying this series of five blog entries together (and a Powerpoint presentation on the subject) are attached. For many years, the effort to improve Read More...
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Attachment(s):http://cid-12a53f90793d2c8b.skydrive.live.com/self.aspx/DDPEBlogImages/Presentations%20and%20Papers/Mainstream%20NUMA%20and%20the%20TCP%20|5CMG%20paper%208220%20draft|6.docx
27 July 2008
Mainstream NUMA & the TCP/IP stack: Part 2: Programming ccNUMA machines
This is a continuation of Part I of this article posted here . In Part 1 of this article, we looked at the capacity issues that are driving architectural changes in the TCP/IP networking stack. While network interfaces are increasing in throughput capacity, Read More...
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10 June 2008
Mainstream NUMA and the TCP/IP stack: Part I.
One of the intriguing aspects of the onset of the many-core processor era is the necessity of using parallel programming techniques to reap the performance benefits of this and future generations of processor chips. Instead of significantly faster processors, Read More...
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