2014 - September
The Future of Synchronization on Multicores: The multicore transformation (Ubiquity symposium)
by Maurice Herlihy
September 2014Synchronization bugs such as data races and deadlocks make every programmer cringe traditional locks only provide a partial solution, while high-contention locks can easily degrade performance. Maurice Herlihy proposes replacing locks with transactions. He discusses adapting the well-established concept of data base transactions to multicore systems and shared main memory.
Making Effective Use of Multicore Systems A software perspective: The multicore transformation (Ubiquity symposium)
by Keith D. Cooper
September 2014Multicore processors dominate the commercial marketplace, with the consequence that almost all computers are now parallel computers. To take maximum advantage of multicore chips, applications and systems should take advantage of that parallelism. As of today, a small fraction of applications do. To improve that situation and to capitalize fully on the power of multicore systems, we need to adopt programming models, parallel algorithms, and programming languages that are appropriate for the multicore world, and to integrate these ideas and tools into the courses that educate the next generation of computer scientists.
The Multicore Transformation Closing Statement: The multicore transformation (Ubiquity symposium)
by Walter Tichy
September 2014Multicore CPUs and GPUs have brought parallel computation within reach of any programmer. How can we put the performance potential of these machines to good use? The contributors of the symposium suggest a number of approaches, among them algorithm engineering, parallel programming languages, compilers that target both SIMD and MIMD architectures, automatic detection and repair of data races, transactional memory, automated performance tuning, and automatic parallelizers. The transition from sequential to parallel computing is now perhaps at the half-way point. Parallel programming will eventually become routine, because advances in hardware, software, and programming tools are simplifying the problems of designing and implementing parallel computations.
The MOOC and the Genre Moment: MOOCs and technology to advance learning and learning research (Ubiquity symposium)
by Michael Feldstein
September 2014In order to determine (and shape) the long-term impact of MOOCs, we must consider not only cognitive and technological factors but also cultural ones, such as the goals of education and the cultural processes that mediate the diffusion of a new teaching modality. This paper examines the implicit cultural assumptions in the "MOOCs and Technology to Advance Learning and Learning Research Symposium" and proposes an alternative theory of diffusion to Clayton Christensen's disruptive innovation model as an illustration of the complexity that these assumptions hide.
A Ubiquity symposium is an organized debate around a proposition or point of view. It is a means to explore a complex issue from multiple perspectives. An early example of a symposium on teaching computer science appeared in Communications of the ACM (December 1989).
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Ubiquity Symposium: Big Data
- Big Data, Digitization, and Social Change (Opening Statement) by Jeffrey Johnson, Peter Denning, David Sousa-Rodrigues, Kemal A. Delic
- Big Data and the Attention Economy by Bernardo A. Huberman
- Big Data for Social Science Research by Mark Birkin
- Technology and Business Challenges of Big Data in the Digital Economy by Dave Penkler
- High Performance Synthetic Information Environments: An integrating architecture in the age of pervasive data and computing By Christopher L. Barrett, Jeffery Johnson, and Madhav Marathe
- Developing an Open Source "Big Data" Cognitive Computing Platform by Michael Kowolenko and Mladen Vouk
- When Good Machine Learning Leads to Bad Cyber Security by Tegjyot Singh Sethi and Mehmed Kantardzic
- Corporate Security is a Big Data Problem by Louisa Saunier and Kemal Delic
- Big Data: Business, technology, education, and science by Jeffrey Johnson, Luca Tesei, Marco Piangerelli, Emanuela Merelli, Riccardo Paci, Nenad Stojanovic, Paulo Leitão, José Barbosa, and Marco Amador
- Big Data or Big Brother? That is the question now (Closing Statement) by Jeffrey Johnson, Peter Denning, David Sousa-Rodrigues, Kemal A. Delic