jcuda.driver

Class CUstreamWaitValue_flags

java.lang.Object

jcuda.driver.CUstreamWaitValue_flags

public class CUstreamWaitValue_flags
extends Object

Flags for JCudaDriver.cuStreamWaitValue32(jcuda.driver.CUstream, jcuda.driver.CUdeviceptr, int, int) and JCudaDriver.cuStreamWaitValue64(jcuda.driver.CUstream, jcuda.driver.CUdeviceptr, long, int)

Field Summary

Fields

Modifier and Type	Field and Description
static int	CU_STREAM_WAIT_VALUE_AND Wait until (*addr & value) !
static int	CU_STREAM_WAIT_VALUE_EQ Wait until *addr == value.
static int	CU_STREAM_WAIT_VALUE_FLUSH Follow the wait operation with a flush of outstanding remote writes.
static int	CU_STREAM_WAIT_VALUE_GEQ Wait until (int32_t)(*addr - value) >= 0 (or int64_t for 64 bit values).
static int	CU_STREAM_WAIT_VALUE_NOR Wait until ~(*addr | value) !

Method Summary

Modifier and Type	Method and Description
static String	stringFor(int n) Returns the String identifying the given CUstreamWaitValue_flags

Methods inherited from class java.lang.Object

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

Field Detail

CU_STREAM_WAIT_VALUE_GEQ

public static final int CU_STREAM_WAIT_VALUE_GEQ

Wait until (int32_t)(*addr - value) >= 0 (or int64_t for 64 bit values). Note this is a cyclic comparison which ignores wraparound. (Default behavior.)

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Constant Field Values

CU_STREAM_WAIT_VALUE_EQ

public static final int CU_STREAM_WAIT_VALUE_EQ

Wait until *addr == value.

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Constant Field Values

CU_STREAM_WAIT_VALUE_AND

public static final int CU_STREAM_WAIT_VALUE_AND

Wait until (*addr & value) != 0.

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Constant Field Values

CU_STREAM_WAIT_VALUE_NOR

public static final int CU_STREAM_WAIT_VALUE_NOR

Wait until ~(*addr | value) != 0. Support for this operation can be queried with ::cuDeviceGetAttribute() and ::CU_DEVICE_ATTRIBUTE_CAN_USE_STREAM_WAIT_VALUE_NOR. Generally, this requires compute capability 7.0 or greater.

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Constant Field Values

CU_STREAM_WAIT_VALUE_FLUSH

public static final int CU_STREAM_WAIT_VALUE_FLUSH

Follow the wait operation with a flush of outstanding remote writes. This means that, if a remote write operation is guaranteed to have reached the device before the wait can be satisfied, that write is guaranteed to be visible to downstream device work. The device is permitted to reorder remote writes internally. For example, this flag would be required if two remote writes arrive in a defined order, the wait is satisfied by the second write, and downstream work needs to observe the first write.

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Constant Field Values

Method Detail

stringFor

public static String stringFor(int n)

Returns the String identifying the given CUstreamWaitValue_flags

Parameters:

n - The CUstreamWaitValue_flags

Returns:

The String identifying the given CUstreamWaitValue_flags