ScaLAPACK functions in the MKL and Ethernet network

[alienff]

Hello.
In our class there are 20 computers, Intel Core 2 Duo in each. They are interconnected by simple 100Mbit Ethernet network using one Ethernet switch and twisted-pair.
The question is: is it reasonable to use ScaLAPACK functions (e.g. pdgetrf) at this network and 20 computers? Or I have to use just LAPACK functions (e.g. dgetrf) at single computer?
Thanks!

[Gennady_F_Intel]

Hello,

depends the task size. if the task size match with RAM available on single computer then please use Lapack version of dgetrf if not then -ScaLapack.

--Gennady

[alienff]

Thanks for your answer!
Yes, the taks's data can be stored in one RAM on single computer.

Another question - is there any solution (may be not Intel :)) that will yield some performance in such Ethernet network?