HPL with Intel V3 haswell processor

Hi Team,

As per my knowledge for calculating a theoretical HPL value (Rpeak)

Number of nodes * Cores per node * Speed per Core * Operation per cycle == Theoretical  HPL (Rpeak)

Is this method is same for the Haswell  Process.

If not please share the detail steps for calculation the Theoretical  HPL (Rpeak).

And achieving the HPL result 

For example:

4 Compute node of 256 GB memmory each node.

E5-2680V3  

Thank You

Atul Yadav