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MODFLOW-USGS / mt3d-usgs

MT3D-USGS Repository
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Code crashes when TTSMULT=1.2 in a model that works with MT3DMS #10

Closed emorway-usgs closed 5 years ago

emorway-usgs commented 7 years ago

Vivek started getting an error with a model that works with MT3DMS 5.3. Turns out the model runs when TTSMULT=1.0 in the BTN input file; however, when equal to 1.2 in this particular model, the distributed MT3D-USGS_64.exe bombs.

Vivek and I noted that when run from Visual Studio in "Release" mode, with TTSMULT=1.2, the model will bomb when the following compile flag is set equal to "Underflow gives 0.0; Abort on other IEEE exceptions (/fpe:0)" (more to follow image):

doesnt_run

The line of code that is bombing is shown below, DTRANS is getting really large by the time the model gets to transport step ~447 in the code below:

code

A model for debugging this problem was added with commit a226eee (11/8/16)

emorway-usgs commented 5 years ago

Took a few commits to work on this issue: 7a6fbca c9a7368 75aba17 9f020a5 eaa42ca 101d775 23b4a65 8e7f5a3 4bdfa74 a130cd1 3f54657

emorway-usgs commented 5 years ago

This problem is now running successfully on Travis with the changes contained in the commits referenced above. Intel was running the model all the way through even though a variable was 'infinite', so it took temporary print statements to finally figure out what was happening.