[mpich-discuss] an error in install mpich( HYDU_sock_is_local (/home/mpi/mpich-3.2/src/pm/hydra/utils/sock/sock.c:532): gethostbyname error on mpi1: Host name lookup failure)

[sanjesh pant]

Hi
 you shouldn't use hostname while executing because u are hostname not
object file

as i am exeuting file name hello.c
first i compile it as
mpicc -o hello hello.c
then i execute it by using command as
mpiexec -launcher rsh -f machinefile -n 3 ./hello

machinefile is filename which contain the name of the host which u
have connected in cluster

I think it will work.

On 3/21/16, ll <baibai1983 at 126.com> wrote:
> Thanks. But my problems is still not sloved. I always use ssh to manage my
> server. But the problem is still unsloved whether I executed the command
> "mpiexec -launcher ssh -f machinefile -n 3 hostname"  by ssh or by terminal.
> ps:My system is centos 6.5.
>
>
>
>
> At 2016-03-20 13:30:18, "sanjesh pant" <spant3474 at gmail.com> wrote:
>
>
> Yes i had got that problem during execution
> What you are using rsh or ssh?
> As i was using rsh and using it i execute as
> mpiexec -launcher rsh -f machinefile -n 3 ./a.out
> a.out is executable file or object file after compilation
>
> On 20 Mar 2016 09:36, "ll" <baibai1983 at 126.com> wrote:
>
> Hi everyone：
> I am a beginner in using mpich. There was an error in installing mpich 3.2.
> when I ran command “ mpiexec -f machinefile -n 3 hostname", there was a
> error which said that:
>
> [mpiexec at mpi1] HYDU_sock_is_local
> (/home/mpi/mpich-3.2/src/pm/hydra/utils/sock/sock.c:532): gethostbyname
> error on mpi1: Host name lookup failure
> [mpiexec at mpi1] main
> (/home/mpi/mpich-3.2/src/pm/hydra/ui/mpich/mpiexec.c:291): unable to check
> if www.plaust.edu.cn is local
>
>
> There was only one line in my machinefile:
> mpi2
>
>
>
>
> And when I tried to ping mpi2, there was an respond:
> [mpi at mpi1 ~]$ ping mpi2
> PING mpi2 (172.18.0.217) 56(84) bytes of data.
> 64 bytes from mpi2 (172.18.0.217): icmp_seq=1 ttl=64 time=1.38 ms
> 64 bytes from mpi2 (172.18.0.217): icmp_seq=2 ttl=64 time=0.263 ms
>
>
> Is there anyone who have encountered this problem?
>
>
>
>
>
>
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>
>
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