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CUDA Driver API (PDF) - v12.9.1 (older) - Last updated Jun 4, 2025 - Send Feedback

8. Data Fields

Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

A

accessDescCount: CUDA_MEM_ALLOC_NODE_PARAMS_v1; CUDA_MEM_ALLOC_NODE_PARAMS_v2
accessDescs: CUDA_MEM_ALLOC_NODE_PARAMS_v2; CUDA_MEM_ALLOC_NODE_PARAMS_v1
accessPolicyWindow: CUlaunchAttributeValue
addressMode: CUDA_TEXTURE_DESC_v1
algo: CUmemDecompressParams
alignment: CUDA_ARRAY_MEMORY_REQUIREMENTS_v1
alloc: CUgraphNodeParams
allocType: CUmemPoolProps_v1
array: CUmemcpy3DOperand_v1
arrayDesc: CUDA_EXTERNAL_MEMORY_MIPMAPPED_ARRAY_DESC_v1
attrs: CUlaunchConfig

B

base_ptr: CUaccessPolicyWindow_v1
blockDimX: CUDA_KERNEL_NODE_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v3; CUlaunchConfig; CUDA_KERNEL_NODE_PARAMS_v2; CUDA_LAUNCH_PARAMS_v1
blockDimY: CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUlaunchConfig; CUDA_LAUNCH_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v1
blockDimZ: CUlaunchConfig; CUDA_LAUNCH_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUDA_KERNEL_NODE_PARAMS_v1
borderColor: CUDA_TEXTURE_DESC_v1
bytesize: CUDA_MEM_ALLOC_NODE_PARAMS_v2; CUDA_MEM_ALLOC_NODE_PARAMS_v1
bytesOverBudget: CUasyncNotificationInfo

C

clockRate: CUdevprop_v1
clusterDim: CUlaunchAttributeValue
clusterSchedulingPolicyPreference: CUlaunchAttributeValue
compressionType: CUmemAllocationProp_v1
conditional: CUgraphNodeParams
cooperative: CUlaunchAttributeValue
copyCtx: CUDA_MEMCPY_NODE_PARAMS
copyParams: CUDA_MEMCPY_NODE_PARAMS
count: CUDA_BATCH_MEM_OP_NODE_PARAMS_v2
ctx: CUDA_KERNEL_NODE_PARAMS_v2; CUDA_CONDITIONAL_NODE_PARAMS; CUDA_MEMSET_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUDA_BATCH_MEM_OP_NODE_PARAMS_v2
cuFormat: CUeglFrame_v1

D

default_: CUlaunchMemSyncDomainMap
depth: CUDA_ARRAY_SPARSE_PROPERTIES_v1; CUeglFrame_v1
Depth: CUDA_MEMCPY3D_v2
depth: CUDA_RESOURCE_VIEW_DESC_v1
Depth: CUDA_MEMCPY3D_PEER_v1; CUDA_ARRAY3D_DESCRIPTOR_v2
deviceBitMask: CUarrayMapInfo_v1
deviceUpdatableKernelNode: CUlaunchAttributeValue
devPtr: CUDA_RESOURCE_DESC_v1
dptr: CUDA_MEM_ALLOC_NODE_PARAMS_v1; CUDA_MEM_ALLOC_NODE_PARAMS_v2; CUDA_MEM_FREE_NODE_PARAMS
dst: CUmemDecompressParams; CUDA_MEMSET_NODE_PARAMS_v1; CUDA_MEMSET_NODE_PARAMS_v2
dstActBytes: CUmemDecompressParams
dstArray: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstContext: CUDA_MEMCPY3D_PEER_v1
dstDevice: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstHeight: CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstHost: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstLocHint: CUmemcpyAttributes_v1
dstLOD: CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstMemoryType: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
dstNumBytes: CUmemDecompressParams
dstPitch: CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY3D_v2; CUDA_MEMCPY2D_v2
dstXInBytes: CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY3D_v2; CUDA_MEMCPY2D_v2
dstY: CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2
dstZ: CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY3D_v2

E

eglColorFormat: CUeglFrame_v1
elementSize: CUDA_MEMSET_NODE_PARAMS_v1; CUDA_MEMSET_NODE_PARAMS_v2
errorFromNode: CUgraphExecUpdateResultInfo_v1
errorNode: CUgraphExecUpdateResultInfo_v1
event: CUDA_EVENT_RECORD_NODE_PARAMS; CUDA_EVENT_WAIT_NODE_PARAMS
eventRecord: CUgraphNodeParams
eventWait: CUgraphNodeParams
extentDepth: CUarrayMapInfo_v1
extentHeight: CUarrayMapInfo_v1
extentWidth: CUarrayMapInfo_v1
extra: CUDA_KERNEL_NODE_PARAMS_v3; CUDA_KERNEL_NODE_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v2
extSemArray: CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v1; CUDA_EXT_SEM_WAIT_NODE_PARAMS_v1; CUDA_EXT_SEM_WAIT_NODE_PARAMS_v2; CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v2
extSemSignal: CUgraphNodeParams
extSemWait: CUgraphNodeParams

F

fd: CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1; CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1
fence: CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1
filterMode: CUDA_TEXTURE_DESC_v1
firstLayer: CUDA_RESOURCE_VIEW_DESC_v1
firstMipmapLevel: CUDA_RESOURCE_VIEW_DESC_v1
flags: CUDA_EXTERNAL_MEMORY_BUFFER_DESC_v1; CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1; CUDA_BATCH_MEM_OP_NODE_PARAMS_v2; CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1; CUDA_GRAPH_INSTANTIATE_PARAMS; CUarrayMapInfo_v1; CUmemcpyAttributes_v1; CUmulticastObjectProp_v1; CUDA_MEMCPY_NODE_PARAMS; CUmemAccessDesc_v1; CUDA_ARRAY_SPARSE_PROPERTIES_v1
Flags: CUDA_ARRAY3D_DESCRIPTOR_v2
flags: CUDA_RESOURCE_DESC_v1; CUDA_TEXTURE_DESC_v1; CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1
fn: CUDA_HOST_NODE_PARAMS_v2; CUDA_HOST_NODE_PARAMS_v1
format: CUDA_RESOURCE_DESC_v1
Format: CUDA_ARRAY3D_DESCRIPTOR_v2; CUDA_ARRAY_DESCRIPTOR_v2
format: CUDA_RESOURCE_VIEW_DESC_v1
frameType: CUeglFrame_v1
free: CUgraphNodeParams
from_port: CUgraphEdgeData
func: CUDA_KERNEL_NODE_PARAMS_v3; CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v1
function: CUDA_LAUNCH_PARAMS_v1

G

graph: CUDA_CHILD_GRAPH_NODE_PARAMS; CUgraphNodeParams
gridDimX: CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUDA_KERNEL_NODE_PARAMS_v1; CUlaunchConfig; CUDA_LAUNCH_PARAMS_v1
gridDimY: CUlaunchConfig; CUDA_KERNEL_NODE_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUDA_LAUNCH_PARAMS_v1
gridDimZ: CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3; CUlaunchConfig; CUDA_KERNEL_NODE_PARAMS_v1; CUDA_LAUNCH_PARAMS_v1

H

handle: CUDA_CONDITIONAL_NODE_PARAMS; CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1; CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1
handleTypes: CUmulticastObjectProp_v1; CUmemPoolProps_v1
hArray: CUDA_RESOURCE_DESC_v1
Height: CUDA_MEMCPY3D_v2
height: CUDA_RESOURCE_VIEW_DESC_v1; CUeglFrame_v1
Height: CUDA_MEMCPY3D_PEER_v1; CUDA_ARRAY_DESCRIPTOR_v2
height: CUDA_RESOURCE_DESC_v1; CUDA_ARRAY_SPARSE_PROPERTIES_v1
Height: CUDA_ARRAY3D_DESCRIPTOR_v2
height: CUDA_MEMSET_NODE_PARAMS_v1; CUDA_MEMSET_NODE_PARAMS_v2
Height: CUDA_MEMCPY2D_v2
hErrNode_out: CUDA_GRAPH_INSTANTIATE_PARAMS
hitProp: CUaccessPolicyWindow_v1
hitRatio: CUaccessPolicyWindow_v1
hMipmappedArray: CUDA_RESOURCE_DESC_v1
host: CUgraphNodeParams
hStream: CUlaunchConfig; CUDA_LAUNCH_PARAMS_v1
hUploadStream: CUDA_GRAPH_INSTANTIATE_PARAMS

I

id: CUlaunchAttribute; CUmemLocation_v1
info: CUasyncNotificationInfo

K

kern: CUDA_KERNEL_NODE_PARAMS_v2; CUDA_KERNEL_NODE_PARAMS_v3
kernel: CUgraphNodeParams
kernelParams: CUDA_KERNEL_NODE_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v2; CUDA_LAUNCH_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v3
key: CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1
keyedMutex: CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1

L

lastLayer: CUDA_RESOURCE_VIEW_DESC_v1
lastMipmapLevel: CUDA_RESOURCE_VIEW_DESC_v1
launchCompletionEvent: CUlaunchAttributeValue
layer: CUarrayMapInfo_v1
layerHeight: CUmemcpy3DOperand_v1
level: CUarrayMapInfo_v1
location: CUmemAllocationProp_v1; CUmemAccessDesc_v1; CUmemPoolProps_v1
locHint: CUmemcpy3DOperand_v1

M

maxAnisotropy: CUDA_TEXTURE_DESC_v1
maxGridSize: CUdevprop_v1
maxMipmapLevelClamp: CUDA_TEXTURE_DESC_v1
maxSize: CUmemPoolProps_v1
maxThreadsDim: CUdevprop_v1
maxThreadsPerBlock: CUdevprop_v1
memcpy: CUgraphNodeParams
memHandleType: CUarrayMapInfo_v1
memOp: CUgraphNodeParams
memOperationType: CUarrayMapInfo_v1
memPitch: CUdevprop_v1
memset: CUgraphNodeParams
memSyncDomain: CUlaunchAttributeValue
memSyncDomainMap: CUlaunchAttributeValue
minMipmapLevelClamp: CUDA_TEXTURE_DESC_v1
mipmapFilterMode: CUDA_TEXTURE_DESC_v1
mipmapLevelBias: CUDA_TEXTURE_DESC_v1
miptailFirstLevel: CUDA_ARRAY_SPARSE_PROPERTIES_v1
miptailSize: CUDA_ARRAY_SPARSE_PROPERTIES_v1
missProp: CUaccessPolicyWindow_v1

N

name: CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1; CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1
num_bytes: CUaccessPolicyWindow_v1
numAttrs: CUlaunchConfig
NumChannels: CUDA_ARRAY3D_DESCRIPTOR_v2
numChannels: CUDA_RESOURCE_DESC_v1; CUeglFrame_v1
NumChannels: CUDA_ARRAY_DESCRIPTOR_v2
numDevices: CUmulticastObjectProp_v1
numExtSems: CUDA_EXT_SEM_WAIT_NODE_PARAMS_v2; CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v1; CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v2; CUDA_EXT_SEM_WAIT_NODE_PARAMS_v1
numLevels: CUDA_EXTERNAL_MEMORY_MIPMAPPED_ARRAY_DESC_v1
nvSciBufObject: CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1
nvSciSync: CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1
nvSciSyncObj: CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1

O

offset: CUDA_EXTERNAL_MEMORY_BUFFER_DESC_v1; CUDA_EXTERNAL_MEMORY_MIPMAPPED_ARRAY_DESC_v1; CUarrayMapInfo_v1
offsetX: CUarrayMapInfo_v1
offsetY: CUarrayMapInfo_v1
offsetZ: CUarrayMapInfo_v1
overBudget: CUasyncNotificationInfo
ownership: CUDA_CHILD_GRAPH_NODE_PARAMS

P

paramArray: CUDA_BATCH_MEM_OP_NODE_PARAMS_v2
paramsArray: CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v1; CUDA_EXT_SEM_WAIT_NODE_PARAMS_v1; CUDA_EXT_SEM_WAIT_NODE_PARAMS_v2; CUDA_EXT_SEM_SIGNAL_NODE_PARAMS_v2
pArray: CUeglFrame_v1
phGraph_out: CUDA_CONDITIONAL_NODE_PARAMS
pitch: CUDA_MEMSET_NODE_PARAMS_v1; CUDA_MEMSET_NODE_PARAMS_v2; CUeglFrame_v1
pitchInBytes: CUDA_RESOURCE_DESC_v1
planeCount: CUeglFrame_v1
poolProps: CUDA_MEM_ALLOC_NODE_PARAMS_v1; CUDA_MEM_ALLOC_NODE_PARAMS_v2
pPitch: CUeglFrame_v1
preferredClusterDim: CUlaunchAttributeValue
priority: CUlaunchAttributeValue
programmaticEvent: CUlaunchAttributeValue
programmaticStreamSerializationAllowed: CUlaunchAttributeValue
ptr: CUmemcpy3DOperand_v1

R

regsPerBlock: CUdevprop_v1
remote: CUlaunchMemSyncDomainMap
requestedHandleTypes: CUmemAllocationProp_v1
reserved: CUgraphEdgeData; CUcheckpointCheckpointArgs; CUcheckpointRestoreArgs; CUDA_MEMCPY_NODE_PARAMS; CUcheckpointUnlockArgs; CUarrayMapInfo_v1; CUmemPoolProps_v1
reserved0: CUDA_MEMCPY3D_v2; CUgraphNodeParams; CUcheckpointLockArgs
reserved1: CUDA_MEMCPY3D_v2; CUcheckpointLockArgs; CUgraphNodeParams
reserved2: CUgraphNodeParams
resourceType: CUarrayMapInfo_v1
resType: CUDA_RESOURCE_DESC_v1
result: CUgraphExecUpdateResultInfo_v1
result_out: CUDA_GRAPH_INSTANTIATE_PARAMS
rowLength: CUmemcpy3DOperand_v1

S

sharedMemBytes: CUDA_KERNEL_NODE_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v2; CUlaunchConfig; CUDA_LAUNCH_PARAMS_v1; CUDA_KERNEL_NODE_PARAMS_v3
sharedMemCarveout: CUlaunchAttributeValue
sharedMemPerBlock: CUdevprop_v1
SIMDWidth: CUdevprop_v1
size: CUDA_CONDITIONAL_NODE_PARAMS; CUDA_ARRAY_MEMORY_REQUIREMENTS_v1; CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1; CUDA_EXTERNAL_MEMORY_BUFFER_DESC_v1; CUarrayMapInfo_v1; CUmulticastObjectProp_v1
sizeInBytes: CUDA_RESOURCE_DESC_v1
smCount: CUdevSmResource
src: CUmemDecompressParams
srcAccessOrder: CUmemcpyAttributes_v1
srcArray: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcContext: CUDA_MEMCPY3D_PEER_v1
srcDevice: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcHeight: CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcHost: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcLocHint: CUmemcpyAttributes_v1
srcLOD: CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcMemoryType: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
srcNumBytes: CUmemDecompressParams
srcPitch: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY3D_v2
srcXInBytes: CUDA_MEMCPY3D_v2; CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_PEER_v1
srcY: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_PEER_v1; CUDA_MEMCPY3D_v2
srcZ: CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
subresourceType: CUarrayMapInfo_v1
syncPolicy: CUlaunchAttributeValue

T

textureAlign: CUdevprop_v1
timeoutMs: CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1; CUcheckpointLockArgs
to_port: CUgraphEdgeData
totalConstantMemory: CUdevprop_v1
type: CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1; CUgraphEdgeData; CUDA_CONDITIONAL_NODE_PARAMS; CUasyncNotificationInfo; CUmemLocation_v1; CUgraphNodeParams; CUmemAllocationProp_v1; CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1

U

usage: CUmemAllocationProp_v1; CUmemPoolProps_v1
userData: CUDA_HOST_NODE_PARAMS_v1; CUDA_HOST_NODE_PARAMS_v2

V

val: CUexecAffinitySmCount_v1
value: CUDA_EXTERNAL_SEMAPHORE_WAIT_PARAMS_v1; CUDA_EXTERNAL_SEMAPHORE_SIGNAL_PARAMS_v1; CUlaunchAttribute; CUDA_MEMSET_NODE_PARAMS_v2; CUDA_MEMSET_NODE_PARAMS_v1

W

width: CUDA_MEMSET_NODE_PARAMS_v1; CUDA_MEMSET_NODE_PARAMS_v2; CUDA_RESOURCE_DESC_v1
Width: CUDA_ARRAY3D_DESCRIPTOR_v2
width: CUDA_RESOURCE_VIEW_DESC_v1; CUDA_ARRAY_SPARSE_PROPERTIES_v1; CUeglFrame_v1
Width: CUDA_ARRAY_DESCRIPTOR_v2
WidthInBytes: CUDA_MEMCPY2D_v2; CUDA_MEMCPY3D_v2; CUDA_MEMCPY3D_PEER_v1
win32: CUDA_EXTERNAL_SEMAPHORE_HANDLE_DESC_v1; CUDA_EXTERNAL_MEMORY_HANDLE_DESC_v1
win32HandleMetaData: CUmemAllocationProp_v1
win32SecurityAttributes: CUmemPoolProps_v1

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