The script Generate_Graphs will create the 3D surface plots

and display them.  It will also produce postscript outputs

for each test and leave them in their respective sub-directory.

It processes the output from an Iozone run. The output from

Iozone that it is expecting is the text output from

the iozone default behavior. (iozone -a, or iozone -az)

How to produce graphs:

   Generate_Graphs iozone.out

The gen_graphs script will:

1. Create the databases for each type of operation 

   and then processes them with Gnuplot.

2. It will display each result on the X11 screen, and

   also save a copy in postscript in the test sub-directory.

Thanks to Yves Rougy for providing the nifty scripts to help

with the plots.