col_dummy

Dummy measurements indicate the overhead added by SKaMPI to the results. This overhead depends on the pattern used. Therefore an empty function (i.e. dummy) is measured for each pattern. Here we measure the overhead induced by the collective pattern.

message length	Result [$\mu$s]	Std. error [$\mu$s]	Count
0	278.7	2.8	50

• Pattern: Collective varied over message length.
• default values: 8 nodes, max. / act. time for suite disabled/0.00 min.
• Max. allowed standard error is 3.00 %.

	message length
X axis scale	logarithmic
Param. refinement	no automatic x wide adaption
Argument range	1 - 0 units (s. below)
Argument stepwidth	2.000000

• Units: bytes in type: basetype 1 (MPI_INT), send-datatype 20: size 4 Bytes, extent 4 Bytes (user defined basetype 1 (MPI_INT)), receive-datatype 20: size 4 Bytes, extent 4 Bytes (user defined basetype 1 (MPI_INT))