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fix for inq_dimlen() bug with unlimited dimensions on parallel I/O builds #2310

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merged 8 commits into from
Apr 26, 2022

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@edwardhartnett edwardhartnett commented Apr 26, 2022

Fixes #2038

Fix problem with length of unlimited dimensions for parallel I/O.

As pointed out by @wkliao, an MPI_Allreduce() call is required so that all processes know the maximum extent of the unlimited dimension.

This code is protected by ifdef blocks so it is not run for sequential builds.

@WardF this fix should probably be merged before the next release.

@edwardhartnett edwardhartnett changed the title Ejh pnetcdf fix for inq_dimlen() bug with unlimited dimensions on parallel I/O builds Apr 26, 2022
@WardF WardF added this to the 4.9.0 milestone Apr 26, 2022
@WardF WardF self-assigned this Apr 26, 2022
@WardF WardF merged commit 8714b51 into Unidata:main Apr 26, 2022
@edwardhartnett edwardhartnett deleted the ejh_pnetcdf branch April 26, 2022 16:23
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Test failure in pnetcdf with netCDF 4.8.0
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