Developer Reference

Contents

Handling Fatal Errors

A fatal error is a circumstance under which
Intel® oneAPI Math Kernel Library
cannot continue the computation. For example, a fatal error occurs when
Intel® oneAPI Math Kernel Library
cannot load a dynamic library or confronts an unsupported CPU type. In case of a fatal error, the default
Intel® oneAPI Math Kernel Library
behavior is to print an explanatory message to the console and call an internal function that terminates the application with a call to the system
exit()
function.
Intel® oneAPI Math Kernel Library
enables you to override this behavior by setting a custom handler of fatal errors. The custom error handler can be configured to throw a C++ exception, set a global variable indicating the failure, or otherwise handle cannot-continue situations. It is not necessary for the custom error handler to call the system
exit()
function. Once execution of the error handler completes, a call to
Intel® oneAPI Math Kernel Library
returns to the calling program without performing any computations and leaves no memory allocated by
Intel® oneAPI Math Kernel Library
and no thread synchronization pending on return.
To specify a custom fatal error handler, call the
mkl_set_exit_handler
function.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.