On 11/5/06, Áõ¹ó±ó <goodluck_1982_at_[hidden]> wrote:
> My hostfile contains only one line:
> 127.0.0.1 cpu=16
>
> The output of "lamnodes -i" is :
> n0 127.0.0.1:1:origin,this_node
> ^^^^ ^^^
That I do not understand. I just tried this on my machine:
a) the lamb-host.def file is:
127.0.0.1 cpu=34
(I sure do not have 34 CPUs; the 34 is just the number of procs I'd
like to have in there which, in your case, you probably want to be a
16).
b) lamboot -v lamb-host.def
lamboot -v lamb-host.def
LAM 7.1.1/MPI 2 C++/ROMIO - Indiana University
n-1<3264> ssi:boot:base:linear: booting n0 (127.0.0.1)
n-1<3264> ssi:boot:base:linear: finished
c) lamnodes:
n0 localhost:34:origin,this_node
So I can definitely see the 34 above. (For that matter, any arbitrary
positive integer).
So, somehow, you are starting a universe that is only using a CPU. Are
you sure your lamboot is really using the file you are giving it? When
you call lamboot, is the file "hostfile" properly called (does it live
in the directory you are using, or are you using the full path to that
file)?
Best,
R.
> It seems that I have only one node -- "n0" and only one CPU .
> But our server has 8 duo-core CPUs, to users we see 16 CPUs ( one core
> is seen as a CPU ).
> Why lamnodes says it has only one CPU ?
>
> e.g.
> $ cat /proc/cpuinfo |grep processor
> processor : 0
> processor : 1
> processor : 2
> processor : 3
> processor : 4
> processor : 5
> processor : 6
> processor : 7
> processor : 8
> processor : 9
> processor : 10
> processor : 11
> processor : 12
> processor : 13
> processor : 14
> processor : 15
>
>
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>
>
--
Ramon Diaz-Uriarte
Statistical Computing Team
Structural Biology and Biocomputing Programme
Spanish National Cancer Centre (CNIO)
http://ligarto.org/rdiaz
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