documentation on gslib

Juan Colmenares

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Jun 23, 2020, 3:00:06 PM6/23/20

to Nek5000

Hi,

Is there any documentation about how gslib works? I'm particularly interested in how the findpts functions work. I've tried reading the C++ code but it's very confusing to me.

Thanks,

Juan Diego

Stefan K.

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Jun 23, 2020, 3:09:34 PM6/23/20

to Juan Colmenares, Nek5000

Not that I know. What are you trying to do?

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Juan Colmenares

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Jun 23, 2020, 3:26:09 PM6/23/20

to Stefan K., Nek5000

I found this online, seems like a good primer on the subject: https://www.kth.se/social/files/5b14371756be5b899ec4af73/noorani_peplinski_schlatter_2015.pdf

I'm trying to couple Nek5000 with a GPU-based particle code. I want to see if I could implement a version of findpts_local to interpolate solutions at particle locations using the GPU. The evaluations would be local and I would use gslib to transfer element data to the appropriate ranks before interpolating.

-JD

Ashwin Vishnu Mohanan

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Jun 23, 2020, 3:29:31 PM6/23/20

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Here is one:

https://github.com/Nek5000/gslib/pull/15
https://github.com/Nek5000/gslib/blob/8c55c0cb4e2a94b3bb55cc1a0a1239d8206435c9/gslib_doc.pdf

Ashwin

Juan Colmenares

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Jun 23, 2020, 3:32:38 PM6/23/20

to Ashwin Vishnu Mohanan, Nek5000

Great, thank you!

-JD

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Philipp Schlatter

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Jun 23, 2020, 3:36:15 PM6/23/20

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Hi,

We have two documents, one about the interpolation as part of Azad Noorani's PhD thesis, and a working document by Nicolas Offermans. Both are on our groups homepage, https://www.kth.se/social/group/simex/page/publications-3/, scroll down to "Technical reports".