Abhi Baruah

Wanted to mention here that I could reproduce something similar to this in HDF5 as well. This might well be an HDF5 issue, instead of netCDF.

Hello all, I was wondering if anyone got a chance to look at this issue. Let me know if you need any more information regarding the issue.

Hi @edwardhartnett , Unfortunately, it is not straightforward for us to update HDF5 to the more recent versions at this time, because of some internal bugs. If you have it...

Hi @edwardhartnett, I was wondering if you got a chance to look at my responses to your questions earlier. Let me know if you need any other information from my...

You mean use vara to read the values with stride 1 and then do the slicing later?

Hello Ed, I tried your recommendation. The issue is that for using 'nc_get_vara', I ll have to read twice as many elements now (since for my original case, the stride...

Thanks @WardF for taking a look. 1. Yes, I am using Visual Studio (VS2019v16.11.7) 2. I am linking against HDF5 v1.10.10

Was the proposed change to use the corresponding HDF5 operations only for Windows? Because for my use case Linux time is reasonable (~20 sec) vs (>100 sec) for Windows.

Hello @WardF , When you say 'consistent' results, you mean consistent with the slow speeds I saw or similar to the speed on Linux? Currently, we do not have v4.9.2...

@WardF I tried the repro with netCDF 4.9.2 and HDF5 1.10.11. Unfortunately, I am still seeing the same performance difference between Windows 11 and Debian 11. Windows 11 : ~130s...