[mvapich-discuss] No route to host in MVAPICH-Virt

[Maksym Planeta]

Hello,

I have setup several virtual machines and I'm trying to run simple MPI programs in there.

My current test is following:

/opt/mvapich2/virt/2.2/bin/mpirun_rsh  -export-all -n 2 host11 host12 MV2_VIRT_USE_IVSHMEM=1 bash -c 'netstat -l | grep $(printenv MPISPAWN_CHECKIN_PORT)'
tcp        0      0 0.0.0.0:49379           0.0.0.0:*               LISTEN     
connect [mt_checkin]: No route to host
[host11:mpirun_rsh][child_handler] Error in init phase, aborting! (1/2 mpispawn connections)

So I'm trying to look if the checkin port is open. But the remote host connection fails with a message "no route to host".

Showing the command which is about to be executed gives me this:

$ /opt/mvapich2/virt/2.2/bin/mpirun_rsh -show  -export-all -n 2 host11 host12 MV2_VIRT_USE_IVSHMEM=1 bash -c 'netstat -l | grep $(printenv MPISPAWN_CHECKIN_PORT)'
/usr/bin/ssh -q host12 cd /home/user; /usr/bin/env  MPISPAWN_MPIRUN_MPD=0 USE_LINEAR_SSH=1 MPISPAWN_MPIRUN_HOST=host11 MPISPAWN_MPIRUN_HOSTIP=141.76.84.15 MPIRUN_RSH_LAUNCH=1 MPISPAWN_CHECKIN_PORT=52056 MPISPAWN_MPIRUN_PORT=52056 MPISPAWN_NNODES=2 MPISPAWN_GLOBAL_NPROCS=2 MPISPAWN_MPIRUN_ID=5190 MPISPAWN_ARGC=3 MPDMAN_KVS_TEMPLATE=kvs_506_host11_5190 MPISPAWN_LOCAL_NPROCS=1 MPISPAWN_ARGV_0='bash' MPISPAWN_ARGV_1='-c' MPISPAWN_ARGV_2='netstat -l | grep $(printenv MPISPAWN_CHECKIN_PORT)' MPISPAWN_ARGC=3 MPISPAWN_GENERIC_ENV_COUNT=1  MPISPAWN_GENERIC_NAME_0=MV2_VIRT_USE_IVSHMEM MPISPAWN_GENERIC_VALUE_0=1 MPISPAWN_ID=1 MPISPAWN_WORKING_DIR=/home/user MPISPAWN_MPIRUN_RANK_0=1  /opt/mvapich2/virt/2.2/bin/mpispawn 0 

/usr/bin/bash -c cd /home/user; /usr/bin/env  MPISPAWN_MPIRUN_MPD=0 USE_LINEAR_SSH=1 MPISPAWN_MPIRUN_HOST=host11 MPISPAWN_MPIRUN_HOSTIP=141.76.84.15 MPIRUN_RSH_LAUNCH=1 MPISPAWN_CHECKIN_PORT=52056 MPISPAWN_MPIRUN_PORT=52056 MPISPAWN_NNODES=2 MPISPAWN_GLOBAL_NPROCS=2 MPISPAWN_MPIRUN_ID=5190 MPISPAWN_ARGC=3 MPDMAN_KVS_TEMPLATE=kvs_506_host11_5190 MPISPAWN_LOCAL_NPROCS=1 MPISPAWN_ARGV_0='bash' MPISPAWN_ARGV_1='-c' MPISPAWN_ARGV_2='netstat -l | grep $(printenv MPISPAWN_CHECKIN_PORT)' MPISPAWN_ARGC=3 MPISPAWN_GENERIC_ENV_COUNT=1  MPISPAWN_GENERIC_NAME_0=MV2_VIRT_USE_IVSHMEM MPISPAWN_GENERIC_VALUE_0=1 MPISPAWN_ID=0 MPISPAWN_WORKING_DIR=/home/user MPISPAWN_MPIRUN_RANK_0=0  /opt/mvapich2/virt/2.2/bin/mpispawn 0 


I can reach both hosts from each other and they see the same IP addresses, and I can ssh to each of the two hosts from each of the two hosts.


Could you help me to identify the issue?

The MVAPICH-Virt version is the last accessible on the mvapich download page

P. S.

You say to allow reading for the user in section 5 of the Virt user manual, but actually the library asks for write access as well, so I set up rights to 766.

-- 
Regards,
Maksym Planeta

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