IMB-MPI-2 Benchmark Classification

IntelĀ® MPI Benchmarks introduces three classes of benchmarks:

Each class interprets results in a different way.

NOTE:

The following benchmarks do not belong to any class:

Single Transfer Benchmarks

This class contains benchmarks of functions that operate on a single data element transferred between one source and one target. For MPI-2 benchmarks, the source of the data transfer can be an MPI process or, in the case of Read benchmarks, an MPI file. The target can be an MPI process or an MPI file.

For I/O benchmarks, the single transfer is defined as an operation between an MPI process and an individual window or a file.

Parallel Transfer Benchmarks

This class contains benchmarks of functions that operate on several processes in parallel. The benchmark timings are produced under a global load. The number of participating processes is arbitrary.

In the Parallel Transfer, more than one process participates in the overall pattern.

The final time is measured as the maximum of timings for all single processes. The throughput is related to that time and the overall amount of transferred data (sum over all processes).

Collective Benchmarks

This class contains benchmarks of functions that are collective as provided by the MPI standard. The final time is measured as the maximum of timings for all single processes. The throughput is not calculated.

MPI-2 Benchmarks Classification

Single Transfer

Parallel Transfer

Collective

Other

Unidir_Get

Multi_Unidir_Get

Accumulate

Window

Unidir_Put

Multi_Unidir_Put

Multi_Accumulate

Multi_Window

Bidir_Get

Multi_Bidir_Get

 

 

Bidir_Put

Multi_Bidir_Put

 

 

S_[I]Write_indv

P_[I]Write_indv

C_[I]Write_indv

Multi-C_[I]Write_indv

S_[I]Write_indv

P_[I]Write_indv

C_[I]Write_indv

Multi-C_[I]Write_indv

Open_close

Multi-Open_close

S_[I]Read_indv

P_[I]Read_indv

C_[I]Read_indv

Multi-C_[I]Read_indv

 

S_[I]Write_expl

P_[I]Write_expl

C_[I]Write_expl

Multi-C_[I]Write_expl

 

S_[I]Read_expl

P_[I]Read_expl

C_[I]Read_expl

Multi-C_[I]Read_expl

 
 

P_[I]Write_shared

C_[I]Write_shared

Multi-C_[I]Write_shared

 
 

P_[I]Read_shared

C_[I]Read_shared

Multi-C_[I]Write_shared

 
 

P_[I]Write_priv

   
 

P_[I]Read_priv

   

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