OUU: Problem with "Stop" Button

[fsoepyan]

In the OUU tab, whenever the "Stop" button is pushed, the button does not change back to "Run OUU", and I need to close FOQUS and reopen it in order to rerun OUU.

[ngbrenda]

Please provide more details on what you were trying to do, so we can replicate the problem. Thanks.

[fsoepyan]

Please refer to Issue #126.

[fsoepyan]

As mentioned in my comment for Issue #110, I downloaded psuade 1.7.10.

However, the issue with the "Stop" button is still there.

[sotorrio1]

Sometimes if you wait a little bit, OUU actually stops and FOQUS doesn't freeze. I assume that it could be psuade hasn’t stopped yet and FOQUS is waiting for it to stop. The stop button should write out a file called “psuade_ouu_stop” in the working directory. This is supposed to be the signal to tell psuade to stop. Sometimes, though, psuade needs to finish something before it can do the check to see if the file exists.

[fsoepyan]

• I tested the "Stop" button by pressing it
• 15 minutes later, it has not returned to "Run OUU"
• I will still need to close and reopen FOQUS to run OUU

[ou3llnl]

The problem was an error in FOQUS that caused PSUADE to hang waiting for it. Should be fixed now. Try it @fsoepyan and close if fixed.

[fsoepyan]

• I downloaded the latest FOQUS files from the "Master" branch and from Jeremy's (@ou3llnl) branch
• I tested the "Stop" button by pressing it during an OUU run
• For both FOQUS versions, I waited for about 15 minutes, and the "Stop" button did not return to "Run OUU"
• I will still need to close and reopen FOQUS to run OUU

[fsoepyan]

• I did Example 3 from the OUU tutorial in the FOQUS user's manual
• I clicked the "Stop" button while OUU is running
• The message box that says "Optimization under Uncertainty analysis finished" appears (which can be closed by clicking "OK")
• The "Stop" button returns to "Run OUU"
• Next step: I will try the "Stop" button on bigger OUU problems

[fsoepyan]

• I used a FOQUS file where the goal is to minimize the cost of electricity of a plant simulated in Aspen Custom Modeler (a more complex one than the one in the OUU tutorial)
• I ran OUU using this FOQUS file
• While OUU is running, I clicked the "Stop" button
• In more than 30 minutes (almost 40 minutes), the "Stop" button did not return to "Run OUU"

[ou3llnl]

@fsoepyan : Could you try using the Rosenbrock_no_vectors example in examples/UQ? Example 3 runs calling a native psuade function and doesn't run the flowsheet so I'm not surprised it works for you. Let me know if you still get freezing with the Rosenbrock, and if yes, send me reproduction steps. I do not have ACM, so your session wouldn't work for me if I tried it.

[ou3llnl]

I just found another error that could be causing the hanging. Working on it.

[fsoepyan]

• I did the Rosenbrock_no_vectors example from the FOQUS UQ tutorial
• When I followed the tutorial's instructions, everything ran fine
• I used the same file for OUU
• I set x1 as Z4, and I set the rest of the variables as Z1
• Under "Optimization Setup": I selected "Mean of G with respect to Z3 and Z4"
• Under "Outputs": I selected "f" as "Objective Function"
• Under "UQ Setup": I selected "Generate new sample for Z4", "Latin Hypercube", and "20" as "Sample Size"
• I clicked "Run OUU"
• After 240 iterations, the objective value is about -0.85
• I clicked "Stop"
• After more than 30 minutes, the "Stop" button did not return to "Run OUU"

[ksbeattie]

@fsoepyan will test with new version of psuade

[fsoepyan]

• This is continuing from my comment in Issue #146
• I downloaded psuade 1.7.12 (the latest version)
• When I tried to stop an OUU run (that I started about 30 minutes before) by pressing the "Stop" button, I still have the same problem as previously, where the "Stop" button is not returning to the "Run OUU" button

[fsoepyan]

I tested the "Stop" button, and it now works.

[fsoepyan]

I am reopening this issue: please see Issue #110 for the reason

[sotorrio1]

The stop button should work unless there is another error, then the communication with psuade breaks and that's why the stop button "doesn't work".

[fsoepyan]

Given Pedro's explanation, we can close this issue.