6.3. Error Handling
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.
- __host__ __device__ const char* cudaGetErrorString ( cudaError_t error )
- Returns the description string for an error code.
- __host__ __device__ cudaError_t cudaGetLastError ( void )
- Returns the last error from a runtime call.
- __host__ __device__ cudaError_t cudaPeekAtLastError ( void )
- Returns the last error from a runtime call.
Functions
- __host__ __device__ const char* cudaGetErrorName ( cudaError_t error )
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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 host thread and resets it to cudaSuccess.
Note:-
Note that this function may also return error codes from previous, asynchronous launches.
-
Note that this function may also return cudaErrorInitializationError, cudaErrorInsufficientDriver or cudaErrorNoDevice if this call tries to initialize internal CUDA RT state.
-
Note that as specified by cudaStreamAddCallback 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
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- __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 host thread. Note that this call does not reset the error to cudaSuccess like cudaGetLastError().
Note:-
Note that this function may also return error codes from previous, asynchronous launches.
-
Note that this function may also return cudaErrorInitializationError, cudaErrorInsufficientDriver or cudaErrorNoDevice if this call tries to initialize internal CUDA RT state.
-
Note that as specified by cudaStreamAddCallback 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
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