Hardware Reference
In-Depth Information
TABLE 3.4: IOR performance for writing 1-GB files on /scratch
Number of Clients
Performance (GB/s)
5,000
679.9 GB/s
10,000
774.3 GB/s
15,000
767.2 GB/s
20,000
710.0 GB/s
22,500
708.5 GB/s
FIGURE 3.4: Blue Waters I/O performance tests scaled with the number of
client nodes. Image courtesy of Celso Mendes, NCSA.
with the number of servers used. Similar behavior was observed in tests with
the other two file systems, indicating that an addition of servers results in a
proportional increase in obtained performance in the Blue Waters architecture.
3.3 Blue Waters Near-line Storage Subsystem and
External Server Subsystem
Blue Waters Near-line Storage Subsystem and External Server Subsystem
complements the on-line storage subsystem with a near-line automated storage
