How to use failure_capture in Dakota?

[thwfei]

How can a simulation program have an error, die in process, and there is no result output, how can Dakota's fork identify the error, please start the calculation of the next simulation program? What I know of software such as iSight is to identify the running time of the simulator, and if the time expires, the fault will be identified and the next simulator will be calculated. Thank you.

[thenectarine]

See Chapter 19 - Simulation Failure Capturing in the Dakota User's Manual.

In the system call and fork simulation interfaces, a detected simulation failure is communicated to Dakota through the results file. Instead of returning the standard results file data, the string “fail” should appear at the beginning of the results file. Any data appearing after the fail string will be ignored. Also, Dakota’s detection of this string is case insensitive, so “FAIL”, “Fail”, etc., are equally valid.

Once the analysis failure has been communicated, Dakota will attempt to recover from the failure using one of the following
four mechanisms, as governed by the interface specification in the user’s input file (see the Interface Commands chapter in the
Dakota Reference Manual [3] for additional information).

Abort, Retry, Recover, Continuation

[thwfei]

Thank you very much