Using IOR to analyze the I/O Performance for HPC Platforms

Conference · Fri Jun 08 04:00:00 EDT 2007

OSTI ID:923356

Shan, Hongzhang; Shalf, John

The HPC community is preparing to deploy petaflop-scale computing platforms that may include hundreds of thousands to millions of computational cores over the next 3 years. Such explosive growth in concurrency creates daunting challenges for the design and implementation of the I/O system. In this work, we first analyzed the I/O practices and requirements of current HPC applications and used them as criteria to select a subset of microbenchmarks that reflect the workload requirements. Our analysis led to selection of IOR, an I/O benchmark developed by LLNL for the ASCI Purple procurement, as our tool to study the I/O performance on two HPC platforms. We selected parameterizations for IOR that match the requirements of key I/O intensive applications to assess its fidelity in reproducing their performance characteristics.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Advanced ScientificComputing Research
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 923356
• Report Number(s): LBNL--62647; BnR: KJ0102000
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
BENCHMARKS
DESIGN
EXPLOSIVES
IMPLEMENTATION
LAWRENCE LIVERMORE NATIONAL LABORATORY
PERFORMANCE
PROCUREMENT