[netcdfgroup] Issue that permission error occurs according to filetype when using parallel netcdf

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• Subject: [netcdfgroup] Issue that permission error occurs according to filetype when using parallel netcdf
• From: Kihang Youn <kyoun@xxxxxxxxxx>
• Date: Thu, 18 Feb 2021 01:03:37 +0000
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Hi All,

I have some questions about netcdf file format with parallel netcdf library.

First, I was wondering the priority of IOR in nf_create function.
For examples, how is the priority of the three values determined in the command 
below?
I want to know clearly whether the 3 variables already have priority or whether 
it depends on the order or position of the IOR.
IOR(NF90_MPIIO, IOR(NF90_NETCDF4, NF90_CLOBBER))

Second, if I use parallel io and NF90_NETCDF4 is used, permission denied 
occurs, but it does not occur in NF90_CLOBBER or NF90_MPIIO.
How to understand in this case?
1) NF90_CLOBBER was written sequentially without any problems.
2) NF90_MPIIO was written parallelly without any problems.
3) NF90_NETCDF4 is tried as parallel, but is the problem caused by the wrong 
file type?

Best Regards,
Kihang

Kihang Youn(윤기항) - Application Analyst | Lenovo DCG Professional Services
Mobile: +82-10-9374-9396
E-mail: kyoun@xxxxxxxxxx

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    • From: Wei-Keng Liao

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  • [netcdfgroup] Issue that permission error occurs according to filetype when using parallel netcdf
    • From: Kihang Youn