[mpich-discuss] credentials for mpiexec -f machinefile

[Jan Balewski]

Hi,
I was able to compile & install MPICH on a master virtual machine for a user cosy11.
There are identical 2 VM running with IPs 198.125.163.212, 198.125.163.207

I picked IP=212 as my master node.
On this node I can run pi computation on two processes:

cosy11 at mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 mpich-3.1]$ mpiexec -n 2 ./examples/cpi
Process 1 of 2 is on mpi-be6bebee-55e3-4901-a5bb-637395ba46f6
Process 0 of 2 is on mpi-be6bebee-55e3-4901-a5bb-637395ba46f6
pi is approximately 3.1415926544231318, Error is 0.0000000008333387
wall clock time = 0.000310

The next step of instruction (h)
http://www.mpich.org/static/downloads/3.1/mpich-3.1-README.txt

tells me to define  machinefile , below is my definition:
$ cat machinefile 
198.125.163.207:2
198.125.163.212:2

Note, I verified I can ssh to both machines from IP=212, but I must type in the password
$ ssh cosy11 at 198.125.163.212
$ ssh cosy11 at 198.125.163.207

Now, I try to compute pi on both VMs and  mpiexec get stuck asking for the password (see the screen shot)
mpiexec -f machinefile -n 4 ./examples/cpi

I must somehow pass credentials for user=cosy11 to both VMs - how?
Have I missed this step of the instruction?

Do I need  to use ssh-key added to my ssh-add list  on IP=212  to make mpiexec to work with remote hosts?
Is there other solution you prefer?
Can you help me how to overcome that?

Thanks
Jan


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mpich.org/pipermail/discuss/attachments/20140423/8155b639/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PastedGraphic-1.png
Type: image/png
Size: 66025 bytes
Desc: not available
URL: <http://lists.mpich.org/pipermail/discuss/attachments/20140423/8155b639/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 1583 bytes
Desc: not available
URL: <http://lists.mpich.org/pipermail/discuss/attachments/20140423/8155b639/attachment.p7s>