Home
Publications
Professional
Research
LogGOPSim
NB Collectives
CG Solver
HPL
Kernels
LibNBC
NBCBench
Performance
Open MPI/MVAPI
MVAPICH
MPI Topology
Netgauge
Networks
BTL eth
ORCS
Older Projects
Teaching
BLOG
Me(e)t me?
Miscellaneous
CV
|
NBCBench - benchmarking Nonblocking MPI Collective Operations Performance
Description
NBCBench is a benchmark that measures overlap and asynchronous
progression of nonblocking collective operations implemented in
LibNBC. NBCBench is distributed under the BSD license.
Download NBCBench
Performance Results for different MPI Implementations
We present performance results of LibNBC for different MPI
implementations. LibNBC issues MPI_Isend() and MPI_Irecv() calls, and
the performance and possible overlap depends on the implementation in
MPI. We do also compare the collective operations implemented in LibNBC
to the MPI operations.
Results are available for the following MPI Implementations:
Please keep in mind that not all collective algorithms in LibNBC are
optimized!
Benchmark Methodology
We used the overlap-benchmark which has been designed to assess the
maximal possible overlap and the minimal latencies. The benchmark will
be described later. Details can be found in "Accurately Measuring Collective
Operations at Massive Scale" [1] and "Implementation and Performance
Analysis of Non-Blocking Collective Operations for MPI" [2].
References
|
