I get this on both the machines: root@ubuntu:/home/# getent hosts ubuntu 192.168.1.4 ubuntu root@ubuntu:/home/# getent hosts hesh 192.168.1.5 hesh root@ubuntu:/home/# which is expected- am I right? (one of my IP address changed as I connected to a different WLAN) On 24 October 2013 09:02, Reuti <[email protected]> wrote:
Hi,
Am 24.10.2013 um 12:05 schrieb heshsham basit:
Thanks a lot for your replies. I followed the instructions given here wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager1
for running MPI program on multiple machines:
My master node is : 192.168.1.4 My client is: 192.168.1.6
You defined them both on both machines in /etc/hosts? What should give a valid reply is:
$ getent hosts ubuntu 192.168.1.4 ubuntu $ getent hosts hesh 192.168.1.6 hesh
resp. the on the other machine.
-- Reuti
I gave the following command from 192.168.1.4
root@ubuntu:/home# mpiexec -f hosts.cfg -n 4 hello [email protected]'s password: [proxy:0:0@hesh] HYDU_sock_connect (./utils/sock/sock.c:171): unable to get host address for ubuntu (1) [proxy:0:0@hesh] main (./pm/pmiserv/pmip.c:209): unable to connect to server ubuntu at port 42104 (check for firewalls!)
Why I am getting there errors?
Both the machines have locally generated executable hello. Do I must have same executable copied in both machines?
On master node 192.168.1.4 root@ubuntu:/home# ls acme hello hosts.cfg mpi_hello.c
On client 192.168.1.6
root@hesh:/home#ls hesh hello
hello in each machine sis generated after compilation locally.
On 22 October 2013 12:51, Jeff Hammond <[email protected]> wrote: See http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager for how to launch MPI across multiple machines. You do not need to use any special hardware adapter; any Ethernet card should provide sufficient TCP/IP support.
Jeff
On Tue, Oct 22, 2013 at 9:23 AM, Pavan Balaji <[email protected]> wrote:
Hello,
You'll need to either install mpich on a shared file system (such as NFS) or individually on each of the nodes. The README file in the mpich tarball should have most of this information.
-- Pavan
On Oct 22, 2013, at 8:26 AM, heshsham basit wrote:
Hi,
I did some experimentation with MPICH on windows, and recently came to know that there is no support for Windows now. I am now shifting to Ubuntu. I was successful in installing MPICH2 and running my first MPI program on a single machine.
Now I want to run my code on multiple PCs. How do I install MPI in a LAN ? What are the additional requirement if any? Do I need any specific hardware -network adapter My card details are as under:
root@ubuntu:/home# lspci -nnk | grep -i net -A2 01:07.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139] (rev 10) Subsystem: Hewlett-Packard Company Device [103c:301d] Kernel driver in use: 8139too
Most of my machines are having this type of card and are connected in LAN. Really appreciate for any pointers to appropriate document or suggestions.
Thanks and regards,
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-- Pavan Balaji http://www.mcs.anl.gov/~balaji
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