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This section describes the error handling functions of the CUDA runtime application programming interface.

Functions

__host__ ​__device__ ​const char* cudaGetErrorName (cudaError_t error )

Returns the string representation of an error code enum name.

Parameters

error

- Error code to convert to string

Returns

char* pointer to a NULL-terminated string

Description

Returns a string containing the name of an error code in the enum. If the error code is not recognized, "unrecognized error code" is returned.

See also:

cudaGetErrorString,cudaGetLastError,cudaPeekAtLastError,cudaError,cuGetErrorName

__host__ ​__device__ ​const char* cudaGetErrorString (cudaError_t error )

Returns the description string for an error code.

Parameters

error

- Error code to convert to string

Returns

char* pointer to a NULL-terminated string

Description

Returns the description string for an error code. If the error code is not recognized, "unrecognized error code" is returned.

See also:

cudaGetErrorName,cudaGetLastError,cudaPeekAtLastError,cudaError,cuGetErrorString

__host__ ​__device__ ​cudaError_t cudaGetLastError ( void )

Returns the last error from a runtime call.

Returns

cudaSuccess,cudaErrorMissingConfiguration,cudaErrorMemoryAllocation,cudaErrorInitializationError,cudaErrorLaunchFailure,cudaErrorLaunchTimeout,cudaErrorLaunchOutOfResources,cudaErrorInvalidDeviceFunction,cudaErrorInvalidConfiguration,cudaErrorInvalidDevice,cudaErrorInvalidValue,cudaErrorInvalidPitchValue,cudaErrorInvalidSymbol,cudaErrorUnmapBufferObjectFailed,cudaErrorInvalidDevicePointer,cudaErrorInvalidTexture,cudaErrorInvalidTextureBinding,cudaErrorInvalidChannelDescriptor,cudaErrorInvalidMemcpyDirection,cudaErrorInvalidFilterSetting,cudaErrorInvalidNormSetting,cudaErrorUnknown,cudaErrorInvalidResourceHandle,cudaErrorInsufficientDriver,cudaErrorNoDevice,cudaErrorSetOnActiveProcess,cudaErrorStartupFailure,cudaErrorInvalidPtx,cudaErrorUnsupportedPtxVersion,cudaErrorNoKernelImageForDevice,cudaErrorJitCompilerNotFound,cudaErrorJitCompilationDisabled

Description

Returns the last error that has been produced by any of the runtime calls in the same instance of the CUDA Runtime library in the host thread and resets it tocudaSuccess.

Note: Multiple instances of the CUDA Runtime library can be present in an application when using a library that statically links the CUDA Runtime.

Note:

• Note that this function may also return error codes from previous, asynchronous launches.

• Note that this function may also returncudaErrorInitializationError,cudaErrorInsufficientDriver orcudaErrorNoDevice if this call tries to initialize internal CUDA RT state.

• Note that as specified bycudaStreamAddCallback no CUDA function may be called from callback.cudaErrorNotPermitted may, but is not guaranteed to, be returned as a diagnostic in such case.

See also:

cudaPeekAtLastError,cudaGetErrorName,cudaGetErrorString,cudaError

__host__ ​__device__ ​cudaError_t cudaPeekAtLastError ( void )

Returns the last error from a runtime call.

Returns

cudaSuccess,cudaErrorMissingConfiguration,cudaErrorMemoryAllocation,cudaErrorInitializationError,cudaErrorLaunchFailure,cudaErrorLaunchTimeout,cudaErrorLaunchOutOfResources,cudaErrorInvalidDeviceFunction,cudaErrorInvalidConfiguration,cudaErrorInvalidDevice,cudaErrorInvalidValue,cudaErrorInvalidPitchValue,cudaErrorInvalidSymbol,cudaErrorUnmapBufferObjectFailed,cudaErrorInvalidDevicePointer,cudaErrorInvalidTexture,cudaErrorInvalidTextureBinding,cudaErrorInvalidChannelDescriptor,cudaErrorInvalidMemcpyDirection,cudaErrorInvalidFilterSetting,cudaErrorInvalidNormSetting,cudaErrorUnknown,cudaErrorInvalidResourceHandle,cudaErrorInsufficientDriver,cudaErrorNoDevice,cudaErrorSetOnActiveProcess,cudaErrorStartupFailure,cudaErrorInvalidPtx,cudaErrorUnsupportedPtxVersion,cudaErrorNoKernelImageForDevice,cudaErrorJitCompilerNotFound,cudaErrorJitCompilationDisabled

Description

Returns the last error that has been produced by any of the runtime calls in the same instance of the CUDA Runtime library in the host thread. This call does not reset the error tocudaSuccess likecudaGetLastError().

Note: Multiple instances of the CUDA Runtime library can be present in an application when using a library that statically links the CUDA Runtime.

Note:

• Note that this function may also return error codes from previous, asynchronous launches.

• Note that this function may also returncudaErrorInitializationError,cudaErrorInsufficientDriver orcudaErrorNoDevice if this call tries to initialize internal CUDA RT state.

• Note that as specified bycudaStreamAddCallback no CUDA function may be called from callback.cudaErrorNotPermitted may, but is not guaranteed to, be returned as a diagnostic in such case.

See also:

cudaGetLastError,cudaGetErrorName,cudaGetErrorString,cudaError