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Subject: Re: [OMPI users] Fwd: Open MPI v1.4 cant find default hostfile
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-04-16 19:54:19


On Apr 16, 2010, at 5:08 PM, Mario Ogrizek wrote:

> I checked the default MCA param file, and found it was there that was (automatically) specified as a relative path, so i changed it.
> So now, it works, altho, still something is not right.
> Seems like its creating 4 times only 1 process.
> Not sure if it has to do something with my hostfile, it contains:
>
> node0
> node1
>
> I am running this on a simple dualcore machine, so i specified it as a localhost with two nodes.

I don't understand this comment - a dual core machine would still be a single node. Just happens to have two processors in it.

Could you send the contents of your hostfile and your mpirun cmd line?

>
> Regards,
>
> Mario
>
> On Sat, Apr 17, 2010 at 12:52 AM, Mario Ogrizek <mario.guardian_at_[hidden]> wrote:
> I understand, so, its looking for a working_dir/usr/local/etc/openmpi-default-hostfile
> I managed to run a hello world program from the console, while my wd was just "/" and it worked, altho strangely...
> example for 4 procs:
>
> Hello MPI World From process 0: Num processes: 1
> Hello MPI World From process 0: Num processes: 1
> Hello MPI World From process 0: Num processes: 1
> Hello MPI World From process 0: Num processes: 1
>
> So, you are saying i allways have to be in "/" to run mpi programs, or there is a way for mpi to search absolute path?
> It seems pretty inconvinient this way.
> I think v 1.2 didnt have this limitation.
>
> Does this have to do anything with LD_LIBRARY_PATH?
>
> Regards,
>
> Mario
>
> On Fri, Apr 16, 2010 at 7:46 PM, Ralph Castain <rhc_at_[hidden]> wrote:
> How did you specify it? Command line? Default MCA param file?
>
> On Apr 16, 2010, at 11:44 AM, Mario Ogrizek wrote:
>
>> Any idea how to solve this?
>>
>> On Fri, Apr 16, 2010 at 7:40 PM, Timur Magomedov <timur.magomedov_at_[hidden]> wrote:
>> Hello.
>> It looks that you hostfile path should
>> be /usr/local/etc/openmpi-default-hostfile not
>> usr/local/etc/openmpi-default-hostfile but somehow Open MPI gets the
>> second path.
>>
>> В Птн, 16/04/2010 в 19:10 +0200, Mario Ogrizek пишет:
>> > Well, im not sure why should i name it /openmpi-default-hostfile
>> > Especially, because mpirun v1.2 executes without any errors.
>> > But, i made a copy named /openmpi-default-hostfile, and still, the
>> > same result.
>> >
>> > This is the whole error message for a simple hello world program:
>> >
>> >
>> > Open RTE was unable to open the hostfile:
>> > usr/local/etc/openmpi-default-hostfile
>> > Check to make sure the path and filename are correct.
>> > --------------------------------------------------------------------------
>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file
>> > base/ras_base_allocate.c at line 186
>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file
>> > base/plm_base_launch_support.c at line 72
>> > [Mario.local:04300] [[114,0],0] ORTE_ERROR_LOG: Not found in file
>> > plm_rsh_module.c at line 990
>> > --------------------------------------------------------------------------
>> > A daemon (pid unknown) died unexpectedly on signal 1 while attempting
>> > to
>> > launch so we are aborting.
>> >
>> >
>> > There may be more information reported by the environment (see above).
>> >
>> >
>> > This may be because the daemon was unable to find all the needed
>> > shared
>> > libraries on the remote node. You may set your LD_LIBRARY_PATH to have
>> > the
>> > location of the shared libraries on the remote nodes and this will
>> > automatically be forwarded to the remote nodes.
>> > --------------------------------------------------------------------------
>> > --------------------------------------------------------------------------
>> > mpirun noticed that the job aborted, but has no info as to the process
>> > that caused that situation.
>> > --------------------------------------------------------------------------
>> > mpirun: clean termination accomplished
>> >
>> >
>> >
>> >
>> > ps. PTP is a parallel tools platform plugin for eclipse
>> >
>> >
>> > Regards,
>> >
>> >
>> > Mario
>> >
>> > _______________________________________________
>> > users mailing list
>> > users_at_[hidden]
>> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>>
>> --
>> Kind regards,
>> Timur Magomedov
>> Senior C++ Developer
>> DevelopOnBox LLC / Zodiac Interactive
>> http://www.zodiac.tv/
>>
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