Production I/O Characterization on the Cray XE6
|Title||Production I/O Characterization on the Cray XE6|
|Publication Type||Conference Paper|
|Year of Publication||2013|
|Authors||Carns, PH, Yao, Y, Harms, K, Latham, R, Ross, RB, Antypas, K|
|Date Published||May 9, 2013|
|Conference Location||Napa Valley, CA|
I/O performance is an increasingly important factor in the productivity of large-scale high-performance computing systems such as Hopper, a 153,216-core Cray XE6 system operated by the National Energy Research Scientific Computing Center. The scientific workload diversity of such systems presents a challenge for I/O performance tuning, however. Applications vary in terms of data volume, I/O strategy, and access method, making it difficult to consistently evaluate and enhance their I/O performance.