Linux installation Mpich

In order to do the lesson set, had to install a Mpich, find a long way. Below is a brief introduction to the installation method

1. Yum installation, this is a relatively simple way to install
   Note: To configure the Yum network source installation epel-release extension source, I tried the local, seemingly no installation success

   [[email protected] yum.repos.d]# yum -y install mpich-3.2-devel.x86_64 mpich-3.2-devel.x86_64 mpich-3.2-doc.noarch 安装好之后是找不到命令的，需要手动配置环境变量[[email protected] yum.repos.d]# find / -name "mpicc"/usr/lib64/mpich-3.2/bin/mpicc先搜索一下安装路径设置环境变量：在 /etc/profile添加一下内容：PATH=$PATH://usr/lib64/mpich-3.2/bin/刷新一下：source /etc/profile命令就可直接使用了新建一个文件test.c[[email protected] ~]# cat test.c #include <mpi.h>#include <stdio.h>#include <math.h>int main(int argc,char* argv[]){

   int myID, Numprocs;
   int Namelen;
   Char Processor_name[mpi_max_processor_name];

   Mpi_init (&ARGC,&ARGV);/ Initialize parallel environment /
   Mpi_comm_rank (Mpi_comm_world,&myid);/ ID number of the current process /
   Mpi_comm_size (Mpi_comm_world,&numprocs);/ total number of processes /
   Mpi_get_processor_name (Processor_name,&namelen);/ name of the current processor /

   fprintf (stderr, "Hello world! Process%d of%d on%s\n ",
   myID, Numprocs, processor_name);

   Mpi_finalize ();/ End parallel Environment /
   return 0;
   }

   [[email protected] ~]# mpicc -o hello test.c [[email protected] ~]# mpirun -np 4 ./hello Fatal error in MPI_Init: Other MPI error, error stack:MPIR_Init_thread(474)..............: MPID_Init(190).....................: channel initialization failedMPIDI_CH3_Init(89).................: MPID_nem_init(320).................: MPID_nem_tcp_init(173).............: MPID_nem_tcp_get_business_card(420): MPID_nem_tcp_init(379).............: gethostbyname failed, c1 (errno 1)但是这里运行还是会报错，原因在于，没有配置好域名解析：需要配置域名解析在/etsc/hosts中与/etc/hostname中的名字需要一致，贴出我的配置[[email protected] ~]# cat /etc/hosts127.0.0.1   host::1         localhost [[email protected] ~]# cat /etc/hostnamehost可以通过ssh 连接host   如果连接成功说明配置成功接下来就可运行了[[email protected] ~]# mpirun -np 4 ./hello Hello World! Process 0 of 4 on hostHello World! Process 2 of 4 on hostHello World! Process 1 of 4 on hostHello World! Process 3 of 4 on host

3. Source Installation Mpich

[Email protected] ~]# wget http://www.mpich.org/static/downloads/3.2/mpich-3.2.tar.gz
--2018-05-28 18:06:45--http://www.mpich.org/static/downloads/3.2/mpich-3.2.tar.gz
Parsing host www.mpich.org (www.mpich.org) ... 140.221.6.71
Connecting www.mpich.org (www.mpich.org) |140.221.6.71|:80 ... is connected.
An HTTP request has been made and is waiting for a response ... OK
Length: 11862150 (11M) [Application/x-gzip]
Saving to: "Mpich-3.2.tar.gz"

100%[=====================================================>] 11,862,150 213kb/s spents 54s

2018-05-28 18:07:40 (215 kb/s)-Saved "mpich-3.2.tar.gz" [11862150/11862150])

[[Email protected] ~]# tar zxf mpich-3.2.tar.gz
[[email protected] ~]# ls
Anaconda-ks.cfg initial-setup-ks.cfg mpich-3.2 mpich-3.2.tar.gz
[Email protected] ~]# CD MPICH-3.2/

[[email protected] mpich-3.2]# ls
ACLOCAL.M4 Configure Doc makefile.in mpi.def src
autogen.sh configure.ac examples man README subsys_include.m4
Changes contrib maint mpich.def Readme.envvar test
Confdb COPYRIGHT makefile.am mpich-doxygen.in release_notes www

Compile
[Email protected] mpich-3.2]#/configure--prefix=/usr/local/mpich
....................
config.status:executing default-4 Commands
Configuration completed. The middle of a big string, see this will succeed

Installation:
Note: If the error in the middle, may be missing gcc, build-essential dependency, yum directly installed on the line
[[email protected] mpich-3.2]# make && make install

The command cannot be found after the installation is successful, or the environment variable needs to be configured
[[email protected] mpich-3.2]# ls/usr/local/mpich/bin/*//This is the installation directory specified previously
/usr/local/mpich/bin/hydra_nameserver/usr/local/mpich/bin/mpiexec.hydra
/usr/local/mpich/bin/hydra_persist/usr/local/mpich/bin/mpif77
/usr/local/mpich/bin/hydra_pmi_proxy/usr/local/mpich/bin/mpif90
/usr/local/mpich/bin/mpic++/usr/local/mpich/bin/mpifort
/usr/local/mpich/bin/mpicc/usr/local/mpich/bin/mpirun
/usr/local/mpich/bin/mpichversion/usr/local/mpich/bin/mpivars
/usr/local/mpich/bin/mpicxx/usr/local/mpich/bin/parkill
/usr/local/mpich/bin/mpiexec

Add the same environment as before
[Email protected] mpich-3.2]# tail-1/etc/profile
Path= $PATH:/usr/local/mpich/bin/
[Email protected] mpich-3.2]# Source/etc/profile

Now you can see MPICC's orders ... It worked

Under test: (or use the example above)
[Email protected] ~]# mpicc-o test test.c
[Email protected] ~]# MPIRUN-NP 4./test
Fatal Error in Mpi_init:other MPI error, Error stack:
Mpir_init_thread (474) ........:
Mpid_init (...): Channel initialization failed, ....., .......
Mpidi_ch3_init (89) ..........:
Mpid_nem_init (320) ..........:
Mpid_nem_tcp_init (173) .......:
Mpid_nem_tcp_get_business_card (420):
Mpid_nem_tcp_init (379) .....: GetHostByName failed, C1 (errno 1)

Same error ....
But the solution is exactly the same as the one above, which is caused by the host name setting.

Linux installation Mpich