[mpich-discuss] how to make the hosts files

[hyunduk kim]

Dear Pavan Balaji

As your comment, I modified my command, however I received unexpected
massage as below

[root at francium examples]# mpiexec -n 10 -machinefile
/usr/local/mpich2/machine/hosts ./cpi
ssh: connect to host host1 port 22: Connection timed out
ssh: connect to host host2 port 22: Connection timed out

I don't know what is wrong?
I just used mpich2 under multi-core environment.


2011/5/11 Pavan Balaji <balaji at mcs.anl.gov>

>
> On 05/11/2011 12:30 AM, hyunduk kim wrote:
>
>> I was trying to install mpich2. mpich2 was running with cpi file after
>> the setup.
>> before running the mpiexec, I made the machine file 'hosts" under the
>> install directory as like /usr/local/mpich2/machine.
>> (in my case, I use the multi-core 2 cpu and one cpu has 6 core)
>> host1 slots=6
>> host2 slots=6
>>
>
> The format is:
>
> host1:6
> host2:6
>
>
>  and I started the test.
>> #> mpiexec -n 12 -machinefile hosts ./cpi
>> After run, I was received a error messages as following
>>
>
> If you use the -machinefile or -f option for the host file, the
> HYDRA_HOST_FILE environment variable is ignored. Do you have the "hosts"
> file in the current directory? Otherwise, you should use:
>
> mpiexec -n 12 -machinefile /usr/local/mpich2/machine/hosts ./cpi
>
>  [root at francium examples]# mpiexec -f machinefile -n 12 ./cpi
>> [mpiexec at francium.kaist.ac.kr <mailto:mpiexec at francium.kaist.ac.kr>]
>>
>> HYDU_parse_hostfile (./utils/args/args.c:316): unable to open host file:
>> machinefile
>>
>
> Do you have a file called "machinefile" in your current directory?
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
>
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