[comp.hypercube] Question: Ratio of communication to calculation time

sharieh@bind.cs.fsu.edu (a sharieh) (04/11/91)

Dear thinkers,

I am running a Fortran code on the Intel iPSC/2.
If I define T_com to be the time to send a data unit of type
                  floating point from one processor to another, and
            T_stu to be the time to start up a message( sending a message of
                  length 0), and 
            T_cal to be the time to do one floating point operations such as
                  a=b*c or a=b+c,
then what are the values of the following ratios:
            T_com/T_cal, T_stu/T_cal?

Thank you in advance.
                             
A. Sharieh