[mpich-discuss] [discuss-mpich]Error while using mpirun

[Hirakjyoti Sarma]

actually the hostname *hirakjyoti-HP-dx2480-MT-KL969AV *was already there
in the /etc/hosts file :

127.0.1.1     hirakjyoti-HP-dx2480-MT-KL969AV

On Tue, 5 Jan 2021 at 05:37, Tony Curtis via discuss <discuss at mpich.org>
wrote:

>
>
> On Jan 4, 2021, at 11:59 AM, Hirakjyoti Sarma via discuss <
> discuss at mpich.org> wrote:
>
>
> Dear all,
> I get the following error while running LAMMPS on ubuntu *without an
> internet connection.*
>
>
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> *Invalid error code (-2) (error ring index 127 invalid)Invalid error code
> (-2) (error ring index 127 invalid)INTERNAL ERROR: invalid error code
> fffffffe (Ring Index out of range) in MPID_nem_tcp_init:373Fatal error in
> PMPI_Init: Other MPI error, error
> stack:MPIR_Init_thread(586)..............: MPID_Init(224).....................:
> channel initialization
> failedMPIDI_CH3_Init(105)................: MPID_nem_init(324).................: MPID_nem_tcp_init(175).............: MPID_nem_tcp_get_business_card(401): MPID_nem_tcp_init(373).............:
> gethostbyname failed, hirakjyoti-HP-dx2480-MT-KL969AV (errno 0)*
>
> But if the PC is  connected to internet LAMMPS successfully run.
> How can i solve the problem?
>
>
> This looks like a local hostname resolution issue.  Maybe you could just
> add your hostname (presumably “*hirakjyoti-……”)* to the localhost entry
> in /etc/hosts and then when offline you’d resolve over loopback?  Assuming
> it’s a single machine.
>
> tony
>
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