File Mismatch error for long B_field Sweep

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Manjushree Maity Res. Scholar, Physics, IIT(BHU)

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Feb 11, 2026, 8:08:04 AM (yesterday) Feb 11
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I am encountering an issue in MuMax3 when running a simulation inside a for-loop over multiple magnetic field (B) values. The simulation runs correctly for the first 40–50 field steps, but after that it stops with the following error:

73bfcb42-15f5-4c8e-8aee-7c5118c0d345.png

I am using MuMax3.10 (Windows, CUDA 11.0) on a desktop system equipped with an NVIDIA RTX 4060 GPU.
The error occurs only during long B-field sweeps and does not appear for a small number of iterations.

Could someone please suggest the best way to avoid this file size mismatch error when running large parameter sweeps in MuMax3 on Windows?

Josh Lauzier

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Feb 11, 2026, 5:30:54 PM (18 hours ago) Feb 11
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Hi,

Can you post the full mx3 script that gives this error? It would make it easier to diagnose the issue.

Cheers,
Josh L.

Manjushree Maity Res. Scholar, Physics, IIT(BHU)

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Feb 11, 2026, 10:02:03 PM (13 hours ago) Feb 11
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Thank you sir for your response.
I attached the script in this email. 


Best regards,
Manju

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