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- Title
Exploring the future of out-of-core computing with compute-local non-volatile memory.
- Authors
Jung, Myoungsoo; Wilson III, Ellis H.; Choi, Wonil; Shalf, John; Aktulga, Hasan Metin; Yang, Chao; Saule, Erik; Catalyurek, Umit V.; Kandemir, Mahmut
- Abstract
Drawing parallels to the rise of general purpose graphical processing units (GPGPUs) as accelerators for specific high-performance computing (HPC) workloads, there is a rise in the use of non-volatile memory (NVM) as accelerators for I/O-intensive scientific applications. However, existing works have explored use of NVM within dedicated I/O nodes, which are distant from the compute nodes that actually need such acceleration. As NVM bandwidth begins to out-pace point-to-point network capacity, we argue for the need to break from the archetype of completely separated storage.Therefore, in this work we investigate co-location of NVM and compute by varying I/O interfaces, file systems, types of NVM, and both current and future SSD architectures, uncovering numerous bottlenecks implicit in these various levels in the I/O stack. We present novel hardware and software solutions, including the new Unified File System (UFS), to enable fuller utilization of the new compute-local NVM storage. Our experimental evaluation, which employs a real-world Out-of-Core (OoC) HPC application, demonstrates throughput increases in excess of an order of magnitude over current approaches.
- Subjects
HIGH performance computing research; ALGORITHMS; NUCLEAR physics; BANDWIDTHS; COMPUTER networks
- Publication
Scientific Programming, 2014, Vol 22, Issue 2, p125
- ISSN
1058-9244
- Publication type
Article
- DOI
10.1155/2014/303810