great. perfect. thanks for all the help.
best,
todd
On Fri, 8 Feb 2008, Jeff Squyres wrote:
> On Feb 7, 2008, at 11:25 PM, Todd Krause wrote:
>
>> okay, now that i got it to work, i can feel like i'm leaving no
>> loose ends
>> as i try to get OpenMPI to work. but that means i have to get fftw2
>> to
>> work by myself, since Fink configures it with LAM-MPI, not OpenMPI.
>> but
>> that gives me a whole litany of errors... and i'm using the exact same
>> installation procedure i used when i installed it (correctly)
>> before...
>> but those were the days of OS 10.4. guess that's the price i pay for
>> innovation.
>
> You need to recompile ffw2 with Open MPI. LAM/MPI and Open MPI are
> source compatible, but not binary compatible.
>
>> oh, one other question: i created a .lamhosts file in my home
>> directory,
>> which contains the one line
>>
>> Macintosh.local cpu=2
>>
>> is this file a) correctly written,
>
> Yes.
>
>> b) in the right place, given that i'm
>> running lam in a totally different directory,
>
> In an rsh/ssh environment, the hostfile that you give to lamboot can
> be anywhere; it's almost irrelevant what the name is. $HOME/.lamhosts
> has no special meaning (i.e., it's not a default location that LAM
> looks for the hostfile).
>
>> and c) irrelevant if i'm
>> trying to run on only one computer (even though i'm hoping to use both
>> cpus)?
>
> If you're only running on one host, it's irrelevant. If you do not
> specify a hostfile and LAM has nowhere else to get a hostlist from
> (e.g., a resource manager), then LAM will assume that you only want to
> run on the localhost. You can then just "mpirun -np 2 ...".
>
> --
> Jeff Squyres
> Cisco Systems
>
> _______________________________________________
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