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doc.zih.tu-dresden.de/docs/jobs_and_resources/mpi_issues.md

@@ -9,9 +9,9 @@ default module for MPI-IO on **all** filesystems incl. Lustre (cf.
 [NEWS file in OpenMPI source code](https://raw.githubusercontent.com/open-mpi/ompi/v4.1.x/NEWS)).
 Prior to this, `ROMIO` was the default MPI-IO module for Lustre.
 
-Colleagues of ZIH have found, that some application suffer a significant performance loss using
-`OMPIO` as MPI-IO module with OpenMPI/4.1.x modules on ZIH systems. At the moment, the root cause is
-unclear and needs further investigation.
+Colleagues of ZIH have found that some MPI-IO access patterns suffer a significant performance loss
+using `OMPIO` as MPI-IO module with OpenMPI/4.1.x modules on ZIH systems. At the moment, the root
+cause is unclear and needs further investigation.
 
 **A workaround** for this performance loss is to use "old", i.e., `ROMIO` MPI-IO-module. This
 is achieved by setting the environment variable `OMPI_MCA_IO` before executing the application as