04_pure-mpi/00_imb

Hands-on: Building Intel MPI Benchmark

0. Legend

• [src_dir] : directory of source
• [rist_dir]: this directory

1. Get source files

$ bash 00_dl.sh
$ ls
IMB-v2021.3  ...

2. Preparation

• Edit Makefile for Fujitsu C/C++ compiler.
  • CFLAGS += -Nclang -g -O0 -std=gnu11 -Wall -Wno-long-long
  • CXXFLAGS += -Nclang -g -O0 -std=gnu++11 -Wall -Wextra -Wpedantic -Wno-long-long

$ cd [src_dir]/src_cpp
$ cp Makefile Makefile_orig
$ vi Makefile # Any editor is acceptable.

• Edit CACHE_SIZE and CACHE_LINE_SIZE in IMB_mem_info.h for A64FX. Recall the measured results of LMbench about the size of cache line.
  • CACHE_SIZE 32 (Unit is MiB).
  • CACHE_LINE_SIZE 256 (Unit is byte).

$ cd [src_dir]/src_c
$ cp IMB_mem_info.h IMB_mem_info.h_orig
$ vi IMB_mem_info.h

3. Compile

$ cd [src_dir]
$ cp [rist_dir]/01_build.sh .
$ bash 01_build.sh &> 01_build.log  #< 1 min.
$ ls
IMB-MPI1  ...  

• The executable files will be put in [src_dir]/