In this paper, I presented the performance feature of workstation clusters with some problems from NAS Parallel benchmarks. I presented that with switched and segmented Ethernet network, we can improve the performance drastically.
The PVM was easy to use API, but lack of non-blocking receive
feature is major drawback. Though it support psend/precv
function for higher performance, it is usually difficult for a
program to issue precv prior to the corresponding psend.
For further work, I am planning to port the programs to MPI
plat-home and will use non-blocking communication features.