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Figure 5. Sequential read performance (N-N)
Sequential read performance summary:
• Peak read performance of F800 was ~12GB/sec
• Peak read performance of H600 was ~6GB/sec
• Peak read performance of NSS-7.0-HA was ~5.9GB/sec
• F800 scaled well
Future tests will utilize more than 64 client compute nodes in an attempt to maximize read throughput on the F800 and H600.
Sequential I/O Performance Tests (N-to-1)
Similar to the sequential I/O N-to-N tests, there were also 7 test cases (1-client, 2-client, 4-client, 8-client, 16-client, 32-client, and 64
client test cases), the block size was 1024KB, and the total workload was 2TB. The difference between the two types of tests is that
individual compute clients will read/write to separate files for the N-to-N tests, while individual clients will read/write to the same file for
N-to-1 tests. For example, in the 2-client test case, the single file size is 2TB, one client node will read/write the first 1TB of the file and
the other client will concurrently read/write the second 1TB of the file. All tests were run in the default configuration.
Figure 6 shows the IOR write performance for the N-to-1 tests.