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BYU-PRISM / GEKKO

GEKKO Python for Machine Learning and Dynamic Optimization
https://machinelearning.byu.edu
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Spontaneous Access Violation errors when remote is set to false #171

Closed PerplexedFox closed 2 days ago

PerplexedFox commented 9 months ago

I described the error in the following stackoverflow question. The interesting part is that as soon as I returned to the previously working code (with constant pressure and other variables determined from coolprop with bsplines) suddenly the error appeared and would not go away.

Error: Exception: Access Violation At line 3157 of file custom.f90 Traceback: not available, compile with -ftrace=frame or -ftrace=full

Error: 'results.json' not found. Check above for additional error details

FileNotFoundError: [Errno 2] No such file or directory: '...\options.json'

If solved with Remote=True the error does not appear at all! Update: since today the remote solution results in

HTTPError: HTTP Error 404: Not Found During handling of the above exception, another exception occurred: ImportError: No solution or server unreachable. Show errors with m.solve(disp=True). Try local solve with m=GEKKO(remote=False).

It does seem like the issue 2 years ago, where the solver crashed...

APMonitor commented 2 days ago

New issue created to track this bug and the resolution. https://github.com/BYU-PRISM/GEKKO/issues/173