Open_Close

The benchmark for the MPI_File_open/MPI_File_close functions. All processes open the same file. To avoid MPI implementation optimizations for an unused file, a negligible non-trivial action is performed with the file. See the basic definitions of the benchmark below.

Open_Close Definition

Property

Description

Measured pattern

MPI_File_open/MPI_File_close

etype

MPI_BYTE

File type

MPI_BYTE

Reported timings

t=Δt (in μsec), as indicated in the figure below.

Reported throughput

None

Open_Close Pattern

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