On 11/4/06, Áõ¹ó±ó <goodluck_1982_at_[hidden]> wrote:
> Dear Ramon:
>
> > This is a _very nice_ machine; just out of curiosity, what is the
> > motherboard? (Iff I get some grant money, I'd like purchasing one of
> ^^^^^^^ Sorry, I don't konw how to view the information about
> motherborad under linux.
It was out of curiosity; nothing very serious (and it'll be a few
months before I am told about the gran anyway :-).
> > these, if they work smoothly with Linux).
> >
> >> I write a hostfile which contains two lines of localhost and run
> >> "lamboot -v hostfile", the output is :
> >
> > But how does your hostfile look like? I think something like
> >
> > 127.0.0.1 cpu=16
> >
> > should be enough for you to have a lam universe over 8 CPUs.
> I did this:
> [basic]$ lamboot -v hostfile
But, how does your hostfile look like? Can you paste here the output
of "cat hostfile"?
And can you paste the output of "lamnodes"?
Best,
R.
>
> LAM 7.1.1/MPI 2 C++/ROMIO - Indiana University
>
> n-1<3871> ssi:boot:base:linear: booting n0 (127.0.0.1)
> n-1<3871> ssi:boot:base:linear: finished
>
>
> But it still seemed that lam was booted on only one cpu.
> Becase when I ran "mpirun C cpi", the output is :
> Process 0 of 1 on n0
> pi is approximately 3.1415926544231341, Error is 0.0000000008333410
> wall clock time = 0.000347
>
> But when I ran "mpirun -np 4 cpi", the output is :
> Process 2 of 4 on n0
> Process 0 of 4 on n0
> Process 1 of 4 on n0
> Process 3 of 4 on n0
> pi is approximately 3.1415926544231239, Error is 0.0000000008333307
> wall clock time = 0.000196
>
> What's wrong in the world?
>
>
>
>
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>
>
--
Ramon Diaz-Uriarte
Statistical Computing Team
Structural Biology and Biocomputing Programme
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz
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