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Intel® MPI Benchmarks User Guide
Legal Information
Introduction
What's New
About this Document
Getting Help and Support
Related Information
Getting Started
Memory and Disk Space Requirements
Building Intel® MPI Benchmarks
Running Intel® MPI Benchmarks
Running Benchmarks in Multiple Mode
MPI-1 Benchmarks
Classification of MPI-1 Benchmarks
Single Transfer Benchmarks
PingPong, PingPongSpecificSource, PingPongAnySource
PingPing, PingPingSpecificSource, PingPingAnySource
Parallel Transfer Benchmarks
Sendrecv
Exchange
Uniband
Biband
Collective Benchmarks
Reduce
Reduce_scatter
Reduce_scatter_block
Allreduce
Allgather
Allgatherv
Scatter
Scatterv
Gather
Gatherv
Alltoall
Bcast
Barrier
MPI-2 Benchmarks
Naming Conventions
Classification of MPI-2 Benchmarks
MPI-2 Benchmark Modes
IMB-EXT Benchmarks
Unidir_Put
Unidir_Get
Bidir_Put
Bidir_Get
Accumulate
Window
IMB-IO Blocking Benchmarks
S_[ACTION]_indv
S_[ACTION]_expl
P_[ACTION]_indv
P_[ACTION]_expl
P_[ACTION]_shared
P_[ACTION]_priv
C_[ACTION]_indv
C_[ACTION]_expl
C_[ACTION]_shared
Open_Close
IMB-IO Non-Blocking Benchmarks
MPI-3 Benchmarks
IMB-NBC Benchmarks
Measuring Communication and Computation Overlap
Measuring Pure Communication Time
Iallgather
Iallgather_pure
Iallgatherv
Iallgatherv_pure
Iallreduce
Iallreduce_pure
Ialltoall
Ialltoall_pure
Ialltoallv
Ialltoallv_pure
Ibarrier
Ibarrier_pure
Ibcast
Ibcast_pure
Igather
Igather_pure
Igatherv
Igatherv_pure
Ireduce
Ireduce_pure
Ireduce_scatter
Ireduce_scatter_pure
Iscatter
Iscatter_pure
Iscatterv
Iscatterv_pure
IMB-RMA Benchmarks
Classification of IMB-RMA Benchmarks
Accumulate
All_get_all
All_put_all
Bidir_get
Bidir_put
Compare_and_swap
Exchange_Get
Exchange_Put
Fetch_and_op
Get_accumulate
Get_all_local
Get_local
One_put_all
One_get_all
Put_all_local
Put_local
Truly_passive_put
Unidir_get
Unidir_put
Multithreaded MPI-1 Benchmarks
Benchmark Methodology
Control Flow
Command-Line Control
Command-Line Control for IMB-MT Benchmarks
Parameters Controlling Intel® MPI Benchmarks
Hard-Coded Settings
Communicators, Active Processes
Message/I-O Buffer Lengths
Buffer Initialization
Other Preparations for Benchmarking
Warm-Up Phase (IMB-MPI1, IMB-EXT, IMB-NBC, and IMB-RMA)
Synchronization
Actual Benchmarking
Checking Results
Output
Sample 1 - IMB-MPI1 PingPong Allreduce
Sample 2 - IMB-MPI1 PingPing Allreduce
Sample 3 - IMB-IO p_write_indv
Sample 4 - IMB-EXT.exe