See the thread here for a recent post about using topas Bragg in RMCProfile.

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Issue with RMCProfile V6.7.9 Linux GPU Request for Assistance
#4
Checking through your files, I think the issue is probably not something to do with the GPU accelerator. It seems that your input data is not sitting on an equally space grid, inferring that you may want to do a rebin of your data first, before feeding into the RMCProfile fitting. Here is detailed instruction about how-to, https://rmcprofile.ornl.gov/data-pre-processing-for-rmcprofile

Also, when you use 'FITTED_SCALE', you may also want to enable 'FITTED_OFFSET'. This may not be an issue but is something good to have.

You may also want to check out the weight optimization in the RMCProfile package manual, https://rmcprofile.ornl.gov/manual/

The 'SAVE_PERIOD' is probably too short. I would set it to something like '10 MINUTES'.

Not sure whether you have ever gone through the tutorials coming with the package already. If not, I would suggest going through them first.
--

Dr. Yuanpeng Zhang
Neutron Scattering Scientist, ORNL
Web: https://www.iris2020.net
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RE: Issue with RMCProfile V6.7.9 Linux GPU Request for Assistance - by y8z-admin - 09-08-2024, 12:47 AM

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