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- research-articleAugust 2018
IR+: Removing parallel I/O interference of MPI programs via data replication over heterogeneous storage devices
Parallel Computing (PACO), Volume 76, Issue CPages 91–105https://doi.org/10.1016/j.parco.2018.01.004Highlights- A data replication method IR+ is proposed to eliminate parallel I/O interference of an MPI program.
I/O requests from parallel processes to a disk compete with each other for a single disk head to access data. The disk efficiency can be significantly reduced due to frequent disk head seeks. In this paper, we propose a scheme, named ...
- research-articleJanuary 2016
Exploiting Page Correlations for Write Buffering in Page-Mapping Multichannel SSDs
ACM Transactions on Embedded Computing Systems (TECS), Volume 15, Issue 1Article No.: 12, Pages 1–25https://doi.org/10.1145/2815622Advanced solid-state disks (SSDs) have been equipped with page-mapping flash translation layers and multichannel architectures. The SSDs employ a RAM-based write buffer, which delays write requests for reducing write traffic, reorders requests for ...
- research-articleMarch 2015
Descrambling data on solid-state disks by reverse-engineering the firmware
Digital Investigation: The International Journal of Digital Forensics & Incident Response (DIGITI), Volume 12, Issue CPages 77–87https://doi.org/10.1016/j.diin.2014.12.003Data recovery is an important component of digital forensic research. Although recovering data from hard drives or small-scale mobile devices has been well studied, solid-state disks (SSDs) have a very different internal architecture and some additional ...
- research-articleFebruary 2015
Plugging Versus Logging: Adaptive Buffer Management for Hybrid-Mapping SSDs
ACM Transactions on Embedded Computing Systems (TECS), Volume 14, Issue 2Article No.: 29, Pages 1–21https://doi.org/10.1145/2629455A promising technique to improve the write performance of solid-state disks (SSDs) is to use a disk write buffer. The goals of a write buffer is not only to reduce the write traffic to the flash chips but also to convert host write patterns into long ...
- research-articleJanuary 2014
Reducing asynchrony in channel garbage-collection for improving internal parallelism of multichannel solid-state disks
ACM Transactions on Embedded Computing Systems (TECS), Volume 13, Issue 2sArticle No.: 63, Pages 1–23https://doi.org/10.1145/2544375.2544383Solid-state disks use multichannel architectures to boost their data transfer rates. Because realistic disk workloads have numerous small write requests, modern flash-storage devices adopt a write buffer and a set of independent channels for better ...