Model error regarding maximum time step exceeded

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Bisesh Joshi

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Dec 6, 2025, 11:40:34 PM (2 days ago) Dec 6
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Hello everyone,
I'm encountering this error of maximum time step exceeded at 2.73965E+03 year every time I run the model. The interesting thing is that it again runs when I restart from this checkpoint until again it reaches to year 2.73965E+03 year and again fails for the same reason. I want to run the model for 5000, 10000 year to see when it stabilizes.
I'm suspecting it to be due to large timestep at that timepoint; however, using timestepper with a timestep reduction factor of 0.90 has not fixed the issue.

Please let me know if anybody has any suggestions?
Thank you!
Best regards,
Bisesh
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Bisesh Joshi
PhD student
Water Science and Policy
Graduate College
University of Delaware

Won Woo Yoon

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Dec 7, 2025, 1:59:03 AM (yesterday) Dec 7
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Dear Bisesh,

You might set the MAXIMUM_NUMBER_OF_TIMESTEPS in TIMESTEPPER larger than 999,999 which is a default value.

Since your model reached 999,999 at about 2,740 years, I would recommend a value larger than 5,000,000.

Sincerely

Won Woo Yoon 

2025년 12월 7일 (일) PM 1:40, Bisesh Joshi <bjo...@udel.edu>님이 작성:
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Bisesh Joshi

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Dec 7, 2025, 10:57:43 AM (15 hours ago) Dec 7
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