Package org.apache.sysds.hops.cost

Class CostEstimatorStaticRuntime

java.lang.Object

org.apache.sysds.hops.cost.CostEstimator

org.apache.sysds.hops.cost.CostEstimatorStaticRuntime

public class CostEstimatorStaticRuntime
extends CostEstimator

Field Summary

Fields

Modifier and Type	Field	Description
static final double	DEFAULT_MBS_HDFSREAD_BINARYBLOCK_SPARSE

Constructor Summary

Constructors

Constructor	Description
CostEstimatorStaticRuntime()

Method Summary

Modifier and Type	Method	Description
static double	getFSReadTime(long dm, long dn, double ds)	Returns the estimated read time from local FS.
static double	getFSWriteTime(long dm, long dn, double ds)

Methods inherited from class org.apache.sysds.hops.cost.CostEstimator

getTimeEstimate, getTimeEstimate

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_MBS_HDFSREAD_BINARYBLOCK_SPARSE

public static final double DEFAULT_MBS_HDFSREAD_BINARYBLOCK_SPARSE

See Also:

• Constant Field Values

Constructor Details

CostEstimatorStaticRuntime

public CostEstimatorStaticRuntime()

Method Details

getFSReadTime

public static double getFSReadTime(long dm,
 long dn,
 double ds)

Returns the estimated read time from local FS. NOTE: Does not handle unknowns.

Parameters:

dm - rows?

dn - columns?

ds - sparsity factor?

Returns:

estimated local file system read time

getFSWriteTime

public static double getFSWriteTime(long dm,
 long dn,
 double ds)