IMB-IO Blocking Benchmarks#
This section describes blocking I/O benchmarks. The benchmarks can run
with varying transfer sizes X, in bytes. The timings are averaged
over multiple samples. The basic MPI data type for all data buffers is
MPI_BYTE. In the definitions below, a single sample with a fixed I/O
size X is used.
Every benchmark contains an elementary I/O action, denoting a pure read
or write. Thus, all benchmark flavors have a Write and a Read
component. The [ACTION] placeholder denotes a Read or a
Write alternatively.
The Write flavors of benchmarks include a file synchronization with
different placements for aggregate and non-aggregate modes.
I/O Benchmarks, Aggregation for Output