compiler/edu.cornell.cs.apl.viaduct.selection/CostEstimator

CostEstimator

interface CostEstimator<C : CostMonoid<C>>

A modular cost model for estimating the cost of executing a program given a protocol assignment.

The cost model is modular because it is local: it cannot look at the entire program, instead, it is restricted to viewing a single computation or a message at a time.

Functions

communicationCost

abstract fun communicationCost(source: Protocol, destination: Protocol, host: Host? = null): Cost<C>

Estimated cost of sending a message from source to destination relative to host in destination. If host is null, then computes the cost for all the hosts in destination.

executionCost

abstract fun executionCost(stmt: SimpleStatementNode, protocol: Protocol): Cost<C>

Estimated cost of executing stmt at protocol.

featureWeights

abstract fun featureWeights(): Cost<C>

Cost weights of features.

zeroCost

abstract fun zeroCost(): Cost<C>

"Identity" cost.

Inheritors

SimpleCostEstimator