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Subject: Re: [OMPI users] Open-MPI 1.3 and environment variables
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-01-20 10:58:33


Not that I know of...I would expect it to work.

On Jan 20, 2009, at 8:47 AM, jody wrote:

> Thanks for the clarification.
> Speaking of 'printenv' - i noticed that
> even though $HOSTNAME is set on all of my machines:
>
> aim-nano_03 ~ # echo $HOSTNAME
> aim-nano_03
>
> it does not appear in printenv's output:
> aim-nano_03 opt # printenv | grep HOST
> aim-nano_03 opt #
> Is there something special about $HOSTNAME and how or when it is set?
>
> Jody
>
> On Tue, Jan 20, 2009 at 3:26 PM, Ralph Castain <rhc_at_[hidden]> wrote:
>> That was never an envar for public use, but rather one that was used
>> internal to OMPI and therefore subject to change (which it did).
>> There are a
>> number of such variables in the system - we try to indicate this by
>> not
>> exposing them via ompi_info. Of course, you can independently
>> discover them
>> with a printenv, but we would not recommend relying on them.
>>
>> The list of reliable envars is provided here:
>>
>> http://www.open-mpi.org/faq/?category=running#mpi-environmental-variables
>>
>> Note that this begins with 1.3 and does not apply to any prior
>> releases.
>>
>> Ralph
>>
>>
>> On Jan 20, 2009, at 4:43 AM, jody wrote:
>>
>>> Under 1.2.8 i could check
>>> OMPI_MCA_ns_nds_vpid
>>> to find out the process rank.
>>> Under 1.3 that variable does not seem to exist anymore.
>>> Is there an equivalent to hat variable in 1.3?
>>> Have any other environment variables changed?
>>>
>>> Thank You
>>> Jody
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>> _______________________________________________
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