# LogP machine

The LogP machine is a model for parallel computation.[1] It aims at being more practical than the PRAM model while still allowing for easy analysis of computation. The name is not related to the mathematical logarithmic function: Instead, the machine is described by the four parameters ${\displaystyle L}$, ${\displaystyle o}$, ${\displaystyle g}$ and ${\displaystyle P}$.

The LogP machine consists of arbitrarily many processing units with distributed memory. The processing units are connected through an abstract communication medium which allows point-to-point communication. This model is pair-wise synchronous and overall asynchronous.

The machine is described by the four parameters:

The units of the parameters ${\displaystyle L}$, ${\displaystyle o}$ and ${\displaystyle g}$ are measured in multiples of processor cycles.