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Dell HPC NFS Storage Solution - High Availability (NSS-HA) Configuration with Dell PowerVault
MD3260/MD3060e Storage Arrays
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IPoIB random write and read performance
Figure 5.
5.3. IPoIB metadata operations
Figure 6, Figure 7, and Figure 8 show the results of file create, stat, and remove operations,
respectively. As the HPC compute cluster has 64 compute nodes, in the graphs below, each client
executed a maximum of one thread for client counts up to 64. For client counts of 128, 256, and 512,
each client executed 2, 3, or 4 simultaneous operations.
From the three figures, it is observed that file create and file remove operations have very similar
performance trajectories, while the file stat operation has much higher performance numbers than the
file create and remove operations. Such behaviors are expected, as file create and remove operations
are write-intensive operations with a small request size, while a file stat operation is read-intensive,
and RAID 6 has a larger overhead for small write operations than read operations.
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1 2 4 8 16 32 48 64
IOPS
Number of concurrent clients
NFS IPoIB random I/O performance
Write
Read