Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet 

Patrick,


I double checked the code, and indeed, mpirun should have automatically 
felt back


on the loopback interface (and mpirun should have worked)

The virbr0 interface prevented that and this is a bug I fixed in 
https://github.com/open-mpi/ompi/pull/6315



Future releases of Open MPI will include this fix, meanwhile, you can 
either remove the virbr0 interface


or use the workaround I previously described


Cheers,


Gilles

On 1/29/2019 1:56 PM, Gilles Gouaillardet wrote:

Patrick,

The root cause is we do not include the localhost interface by default 
for OOB communications.



You should be able to run with

mpirun --mca oob_tcp_if_include lo -np 4 hostname


Cheers,

Gilles

On 1/28/2019 11:02 PM, Patrick Bégou wrote:


Hi,

I fall in a strange problem with OpenMPI 3.1 installed on a CentOS7 
laptop. If no  network is available I cannot launch a local mpi job 
on the laptop:


bash-4.2$ mpirun -np 4 hostname
-- 

No network interfaces were found for out-of-band communications. We 
require

at least one available network for out-of-band messaging.
-- 



OpenMPI is built localy with

    Open MPI: 3.1.3rc1
  Open MPI repo revision: v3.1.2-78-gc8e9819
  Configure command line: '--prefix=/opt/GCC73/openmpi31x'
'--enable-mpirun-prefix-by-default'
  '--disable-dlopen' 
'--enable-mca-no-build=openib'

  '--without-verbs' '--enable-mpi-cxx'
  '--without-slurm' 
'--enable-mpi-thread-multiple'


I've tested some btl setup found with google but none solve the problem.

bash-4.2$ mpirun -np 4 -mca btl ^tcp hostname

or

bash-4.2$ mpirun -np 4 -mca btl vader,self hostname

Sarting a wifi connection (when it is available):

bash-4.2$ mpirun -np 4 hostname
localhost.localdomain
localhost.localdomain
localhost.localdomain
localhost.localdomain

Any suggestion is welcome

Patrick


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Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet 

Patrick,

The root cause is we do not include the localhost interface by default 
for OOB communications.



You should be able to run with

mpirun --mca oob_tcp_if_include lo -np 4 hostname


Cheers,

Gilles

On 1/28/2019 11:02 PM, Patrick Bégou wrote:


Hi,

I fall in a strange problem with OpenMPI 3.1 installed on a CentOS7 
laptop. If no  network is available I cannot launch a local mpi job on 
the laptop:


bash-4.2$ mpirun -np 4 hostname
--
No network interfaces were found for out-of-band communications. We 
require

at least one available network for out-of-band messaging.
--

OpenMPI is built localy with

    Open MPI: 3.1.3rc1
  Open MPI repo revision: v3.1.2-78-gc8e9819
  Configure command line: '--prefix=/opt/GCC73/openmpi31x'
'--enable-mpirun-prefix-by-default'
  '--disable-dlopen' 
'--enable-mca-no-build=openib'

  '--without-verbs' '--enable-mpi-cxx'
  '--without-slurm' '--enable-mpi-thread-multiple'

I've tested some btl setup found with google but none solve the problem.

bash-4.2$ mpirun -np 4 -mca btl ^tcp hostname

or

bash-4.2$ mpirun -np 4 -mca btl vader,self hostname

Sarting a wifi connection (when it is available):

bash-4.2$ mpirun -np 4 hostname
localhost.localdomain
localhost.localdomain
localhost.localdomain
localhost.localdomain

Any suggestion is welcome

Patrick


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Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Patrick Bégou 
Hi Gilles,

localhost is available in the state where the problem occurs. I discover
suddently this mpi trouble yesterday as I was working in the train...
otherwise I was always connected to the net at home (wifi) or at the
laboratory (wired)

bash-4.2$ ifconfig
enp0s31f6: flags=4099  mtu 1500
    ether e4:b9:7a:01:ec:11  txqueuelen 1000  (Ethernet)
    RX packets 0  bytes 0 (0.0 B)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 0  bytes 0 (0.0 B)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    device interrupt 16  memory 0xef20-ef22 

*lo: flags=73  mtu 65536**
**    inet 127.0.0.1  netmask 255.0.0.0**
**    inet6 ::1  prefixlen 128  scopeid 0x10**
**    loop  txqueuelen 1000  (Boucle locale)**
**    RX packets 525941  bytes 859209091 (819.4 MiB)**
**    RX errors 0  dropped 0  overruns 0  frame 0**
**    TX packets 525941  bytes 859209091 (819.4 MiB)**
**    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0**
*
virbr0: flags=4099  mtu 1500
    inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
    ether 52:54:00:2d:6f:8e  txqueuelen 1000  (Ethernet)
    RX packets 0  bytes 0 (0.0 B)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 0  bytes 0 (0.0 B)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4099  mtu 1500
    ether 76:f4:76:61:12:28  txqueuelen 1000  (Ethernet)
    RX packets 941959  bytes 1168504942 (1.0 GiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 491366  bytes 63144705 (60.2 MiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


Le 28/01/2019 à 15:17, Gilles Gouaillardet a écrit :
> Patrick,
>
> Does “no network is available” means the lo interface (localhost
> 127.0.0.1) is not even available ?
>
> Cheers,
>
> Gilles
>
> On Monday, January 28, 2019, Patrick Bégou
>  > wrote:
>
> Hi,
>
> I fall in a strange problem with OpenMPI 3.1 installed on a
> CentOS7 laptop. If no  network is available I cannot launch a
> local mpi job on the laptop:
>
> bash-4.2$ mpirun -np 4 hostname
> --
> No network interfaces were found for out-of-band communications.
> We require
> at least one available network for out-of-band messaging.
> --
>
> OpenMPI is built localy with
>
>     Open MPI: 3.1.3rc1
>   Open MPI repo revision: v3.1.2-78-gc8e9819
>   Configure command line: '--prefix=/opt/GCC73/openmpi31x'
>   '--enable-mpirun-prefix-by-default'
>   '--disable-dlopen'
> '--enable-mca-no-build=openib'
>   '--without-verbs' '--enable-mpi-cxx'
>   '--without-slurm'
> '--enable-mpi-thread-multiple'
>
> I've tested some btl setup found with google but none solve the
> problem.
>
> bash-4.2$ mpirun -np 4 -mca btl ^tcp hostname
>
> or
>
> bash-4.2$ mpirun -np 4 -mca btl vader,self hostname
>
> Sarting a wifi connection (when it is available):
>
> bash-4.2$ mpirun -np 4 hostname
> localhost.localdomain
> localhost.localdomain
> localhost.localdomain
> localhost.localdomain
>
> Any suggestion is welcome
>
> Patrick
>
>
> ___
> users mailing list
> users@lists.open-mpi.org
> https://lists.open-mpi.org/mailman/listinfo/users


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Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet 
Patrick,

Does “no network is available” means the lo interface (localhost 127.0.0.1)
is not even available ?

Cheers,

Gilles

On Monday, January 28, 2019, Patrick Bégou <
patrick.be...@legi.grenoble-inp.fr> wrote:

> Hi,
>
> I fall in a strange problem with OpenMPI 3.1 installed on a CentOS7
> laptop. If no  network is available I cannot launch a local mpi job on the
> laptop:
>
> bash-4.2$ mpirun -np 4 hostname
> --
> No network interfaces were found for out-of-band communications. We require
> at least one available network for out-of-band messaging.
> --
>
> OpenMPI is built localy with
>
> Open MPI: 3.1.3rc1
>   Open MPI repo revision: v3.1.2-78-gc8e9819
>   Configure command line: '--prefix=/opt/GCC73/openmpi31x'
>   '--enable-mpirun-prefix-by-default'
>   '--disable-dlopen' '--enable-mca-no-build=openib'
>   '--without-verbs' '--enable-mpi-cxx'
>   '--without-slurm' '--enable-mpi-thread-multiple'
>
> I've tested some btl setup found with google but none solve the problem.
> bash-4.2$ mpirun -np 4 -mca btl ^tcp hostname
>
> or
>
> bash-4.2$ mpirun -np 4 -mca btl vader,self hostname
>
> Sarting a wifi connection (when it is available):
>
> bash-4.2$ mpirun -np 4 hostname
> localhost.localdomain
> localhost.localdomain
> localhost.localdomain
> localhost.localdomain
>
> Any suggestion is welcome
>
> Patrick
>
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[OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Patrick Bégou 
Hi,

I fall in a strange problem with OpenMPI 3.1 installed on a CentOS7
laptop. If no  network is available I cannot launch a local mpi job on
the laptop:

bash-4.2$ mpirun -np 4 hostname
--
No network interfaces were found for out-of-band communications. We require
at least one available network for out-of-band messaging.
--

OpenMPI is built localy with

    Open MPI: 3.1.3rc1
  Open MPI repo revision: v3.1.2-78-gc8e9819
  Configure command line: '--prefix=/opt/GCC73/openmpi31x'
  '--enable-mpirun-prefix-by-default'
  '--disable-dlopen' '--enable-mca-no-build=openib'
  '--without-verbs' '--enable-mpi-cxx'
  '--without-slurm' '--enable-mpi-thread-multiple'

I've tested some btl setup found with google but none solve the problem.

bash-4.2$ mpirun -np 4 -mca btl ^tcp hostname

or

bash-4.2$ mpirun -np 4 -mca btl vader,self hostname

Sarting a wifi connection (when it is available):

bash-4.2$ mpirun -np 4 hostname
localhost.localdomain
localhost.localdomain
localhost.localdomain
localhost.localdomain

Any suggestion is welcome

Patrick

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