IEEE Transactions on Parallel and Distributed Systems

IEEE Transactions on Parallel and Distributed Systems (TPDS) is a scholarly archival journal published monthly. Parallelism and distributed computing are foundational research and technology to rapidly advance computer systems and their applications. Read the full scope of TPDS.


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From the August 2018 Issue

Unraveling Network-Induced Memory Contention: Deeper Insights with Machine Learning

By Taylor Liles Groves, Ryan E. Grant, Aaron Gonzales, and Dorian Arnold

Free Featured Article Remote Direct Memory Access (RDMA) is expected to be an integral communication mechanism for future exascale systems—enabling asynchronous data transfers, so that applications may fully utilize CPU resources while simultaneously sharing data amongst remote nodes. In this work we examine Network-induced Memory Contention (NiMC) on Infiniband networks. We expose the interactions between RDMA, main-memory and cache, when applications and out-of-band services compete for memory resources. We then explore NiMC’s resulting impact on application-level performance. For a range of hardware technologies and HPC workloads, we quantify NiMC and show that NiMC’s impact grows with scale resulting in up to 3X performance degradation at scales as small as 8K processes even in applications that previously have been shown to be performance resilient in the presence of noise. Additionally, this work examines the problem of predicting NiMC’s impact on applications by leveraging machine learning and easily accessible performance counters. This approach provides additional insights about the root cause of NiMC and facilitates dynamic selection of potential solutions. Lastly, we evaluated three potential techniques to reduce NiMC’s impact, namely hardware offloading, core reservation and software-based network throttling.

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Editorials and Announcements

Announcements

  • We are pleased to announce that Manish Parashar, a Distinguished Professor of Computer Science at Rutgers, The State University of New Jersey University, has been selected as the new Editor-in-Chief of the IEEE Transactions on Parallel and Distributed Systems starting in 2018.
  • We are pleased to announce that Xian-He Sun, a Distinguished Professor of Computer Science at The Illinois Institute of Technology, has been selected as the new Associate Editor-in-Chief of the IEEE Transactions on Parallel and Distributed Systems starting in 2018.
  • TPDS now offers authors access to Code Ocean. Code Ocean is a cloud-based executable research platform that allows authors to share their algorithms in an effort to make the world’s scientific code more open and reproducible. Learn more or sign up for free.
  • According to Clarivate Analytics' 2016 Journal Citation Report, TPDS has an impact factor of 4.181.

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