• IOR has a 'driver' for PnetCDF
• The E3SM I/O kernel is a case study of parallel I/O kernel of the E3SM climate simulation model. The I/O pattern exhibits a large volume of non-contiguous requests.
• The FLASH I/O kernel, developed at the FLASH center of University of Chicago, measure severals write-only workloads. Starting from 1.4.0 release, PnetCDF distribution includes the FLASH-IO kernel that uses PnetCDF APIs.
• BTIO is a block-tridiagonal partitioning pattern on a three-dimensional array across a square number of MPI processes, part of NASA's NAS Parallel Benchmarks (NPB) suite.
• GCRM-IO is the I/O kernel of Global Cloud Resolving Model (GCRM) simulation codes. GCRM was developed at the Colorado State University.
• S3D-IO is the I/O kernel of S3D combustion simulation code, a continuum scale first principles direct numerical simulation code which solves the compressible governing equations of mass continuity, momenta, energy and mass fractions of chemical species including chemical reactions, developed at the Sandia National Laboratory.

Be mindful of benchmarks which write large contiguous chunks of data. While interesting, it might not be what a scientific application using PnetCDF would actually do.

Older versions of IOR triggered a performance bug on some Lustre file systems. Sometimes slow write performance on Lustre can be fixed by disabling the "data sieving" optimization. See HintsForPnetcdf for more information.