Ubuntu下Openmpi安裝

1、安裝包下載

openmpi下載路徑

2、OpenMPI手動編譯配置安裝

1. 解壓

~/installPackage$ tar -zxvf openmpi-4.0.4.tar.gz 

2. 編譯安裝

$ cd /home/qulei/installPackage/openmpi-4.0.4/
$ ./configure --prefix=$HOME/opt/openMpi
$ make all
$ sudo make install

3. 配置環境變量

$ cd 
$ vim .bashrc 
export PATH=$PATH:/home/qulei/opt/openMpi/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/qulei/opt/openMpi/lib

4.查看版本

$ mpiexec --version
mpiexec (OpenRTE) 2.1.1

Report bugs to http://www.open-mpi.org/community/help/

$ mpirun --version
mpirun (Open MPI) 2.1.1

Report bugs to http://www.open-mpi.org/community/help/

3、測試

建立一個hello.c文件進行環境測試。具體測試可以參考：MPI Hello World

#include <mpi.h>
#include <stdio.h>

int main(int argc, char** argv) {
    // Initialize the MPI environment
    MPI_Init(NULL, NULL);

    // Get the number of processes
    int world_size;
    MPI_Comm_size(MPI_COMM_WORLD, &world_size);

    // Get the rank of the process
    int world_rank;
    MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);

    // Get the name of the processor
    char processor_name[MPI_MAX_PROCESSOR_NAME];
    int name_len;
    MPI_Get_processor_name(processor_name, &name_len);

    // Print off a hello world message
    printf("Hello world from processor %s, rank %d out of %d processors\n",
           processor_name, world_rank, world_size);

    // Finalize the MPI environment.
    MPI_Finalize();
}

用 mpicc hello.c -o test編譯文件：

code$ mpicc hello.c  -o hello

執行：

code$ mpirun -np 2 ./hello
Hello world from processor qulei-System-Product-Name, rank 0 out of 2 processors
Hello world from processor qulei-System-Product-Name, rank 1 out of 2 processors

以上 -np 2 表示用兩個線程執行程序