Sunday September 12, 2010
At one point, you may need to investigate and compare the performance (e.g. bandwidth and latency) of various network fabrics, such as gigabit Ethernet and Infiniband.
A boatload of data needs to be moved from one cluster node to another cluster node. Your task is to use NetPIPE to determine:

-The optimum packet size to use if the underlying transport is TCP over Ethernet

-The optimum packet size to use if the underlying transport is TCP over Infiniband

-How much lower the latency of TCP over Infiniband is than that of TCP over Ethernet

Try to produce a graph that illustrates your answers to the first two questions. gnuplot is likely to be your best friend here.

Resources:

-NetPIPE Download/Information
-Quick Background on Ethernet and Infiniband
-TCP Reference
-gnuplot
-Wikipedia page on Infiniband

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