Package io.github.jbellis.jvector.util

Class PhysicalCoreExecutor

java.lang.Object

io.github.jbellis.jvector.util.PhysicalCoreExecutor

All Implemented Interfaces:

Closeable, AutoCloseable

public class PhysicalCoreExecutor
extends Object
implements Closeable

A fork join pool which is sized to match the number of physical cores on the machine (avoiding hyper-thread count) This is important for heavily vectorized sections of the code since it can easily saturate memory bandwidth.

See Also:

• ProductQuantization
• Knowing how many physical cores a machine has is left to the operator (however the default of 1/2 cores is today often correct).

Field Summary

Fields

Modifier and Type	Field	Description
static final PhysicalCoreExecutor	instance

Method Summary

Modifier and Type	Method	Description
void	close()
void	execute(Runnable run)
static int	getPhysicalCoreCount()
static ForkJoinPool	pool()
<T> T	submit(Supplier<T> run)

Methods inherited from class java.lang.Object

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

Field Details

instance

public static final PhysicalCoreExecutor instance

Method Details

pool

public static ForkJoinPool pool()

execute

public void execute(Runnable run)

submit

public <T> T submit(Supplier<T> run)

getPhysicalCoreCount

public static int getPhysicalCoreCount()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable