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provides a nice little utility called iostat
that gathers both sets of data. In the example in Listing 6, iostat
is showing an extended set of metrics and the CPU utilization at two-second intervals
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performance of parallel systems, providing a proxy for computation and data movement in computation fluid dynamics (CFD) applications. NPB has been around for many years and has proven to be very useful
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. To be POSIX compatible or, at worst, mostly
POSIX compliant, they provide an equivalent so that any stat
-like command (see below) can be satisfied.
Inode Information
You have several easy ways of getting
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’ve chosen to go a slightly different route and make each data server on the old storage a seed server, so it will be serving a particular file and no other server will provide for it by creating the correct
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a “front-end” system to provide things such as I/O functionality. Examples of front-end systems were the Cray C90 or Y-MP.
The T3D was something of a sea change for Cray. The first reason is that it moved
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.
The information and statistics in this section focus on the write() aspects of the application. Both tabular and graphical information is provided.
Table 3 below contains information on the total number of write
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.
The information and statistics in this section focus on the write() aspects of the application. Both tabular and graphical information is provided.
Table 3 below contains information on the total number of write
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to make sure the OS on the various nodes is the same (or really close) and that the administrator can easily update the OS and put it on the compute nodes within the cluster. Warewulf provides much
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second issued to the filesystem.
wops/s
The number of write operations per second issued to the filesystem.
As with iostat, the first report generated by nfsiostat provides statistics
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at monitoring frameworks where, I hope, the scripts will be useful for custom monitoring and perhaps provide a nice visual representation of the state of the cluster.
A non-exhaustive list of monitoring