cudaErrorInvalidValue

The cudaErrorInvalidValue is an error code returned by the CUDA runtime API. It signifies that an invalid argument was passed to a CUDA function. This can occur for a variety of reasons, but it generally means that one or more parameters provided to a CUDA API call are outside the acceptable range or format.

Common causes for cudaErrorInvalidValue include passing null pointers where a valid pointer is expected, providing negative or excessively large dimensions for arrays or matrices, or specifying unsupported configurations for CUDA operations. For instance, attempting to launch a kernel with zero threads or blocks, or requesting a memory allocation of zero bytes, could result in this error. Incorrectly formatted device properties or invalid stream flags can also trigger it.

Troubleshooting cudaErrorInvalidValue typically involves carefully reviewing the arguments passed to the CUDA API function that returned the error. Developers should check the documentation for the specific function to understand the valid range and expected format for each parameter. Debugging tools can also be invaluable in inspecting variable values before they are passed to CUDA functions. Ensuring that memory has been properly allocated and initialized, and that dimensions are positive and within hardware limits, are crucial steps in resolving this error.