Function hipGraphInstantiate 

pub unsafe extern "C" fn hipGraphInstantiate(
    pGraphExec: *mut hipGraphExec_t,
    graph: hipGraph_t,
    pErrorNode: *mut hipGraphNode_t,
    pLogBuffer: *mut c_char,
    bufferSize: usize,
) -> hipError_t

@brief Creates an executable graph from a graph

@param [out] pGraphExec - Pointer to instantiated executable graph. @param [in] graph - Instance of graph to instantiate. @param [out] pErrorNode - Pointer to error node. In case an error occured during graph instantiation, it could modify the corresponding node. @param [out] pLogBuffer - Pointer to log buffer. @param [out] bufferSize - Size of the log buffer.

@returns #hipSuccess, #hipErrorOutOfMemory