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Title: High-Performance I/O: HDF5 for Lattice QCD

Practitioners of lattice QCD/QFT have been some of the primary pioneer users of the state-of-the-art high-performance-computing systems, and contribute towards the stress tests of such new machines as soon as they become available. As with all aspects of high-performance-computing, I/O is becoming an increasingly specialized component of these systems. In order to take advantage of the latest available high-performance I/O infrastructure, to ensure reliability and backwards compatibility of data files, and to help unify the data structures used in lattice codes, we have incorporated parallel HDF5 I/O into the SciDAC supported USQCD software stack. Here we present the design and implementation of this I/O framework. Our HDF5 implementation outperforms optimized QIO at the 10-20% level and leaves room for further improvement by utilizing appropriate dataset chunking.
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Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-15-2007; DOE/OR/23177-3292; arxiv:1501.06992; NT@WM-15-02
DOE Contract Number:
AC05-06OR23177; AC02-05CH11231;
Resource Type:
Resource Relation:
Journal Name: PoS LATTICE2014; Conference: Lattice 2014, 23-28 Jun 2014. Brookhaven, NY, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Country of Publication:
United States