R devel - Apr 2008 - Rmpi 0.5-6 : error spawning process

Hi,

I am using a cluster with LAM 7.1.3/MPI 2 and R 2.6.0.
Rmpi version 0.5-5 is working very well.

Now I have tested "Rmpi 0.5-6". During spawning the Rslaves I get an 
error: MPI_Error_string: error spawning process

 > sessionInfo()
R version 2.6.0 (2007-10-03)
x86_64-unknown-linux-gnu

locale:
LC_CTYPE=de_DE.UTF-8;LC_NUMERIC=C;LC_TIME=de_DE.UTF-8;LC_COLLATE=de_DE.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=de_DE.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base    

other attached packages:
[1] Rmpi_0.5-6

loaded via a namespace (and not attached):
[1] rcompgen_0.1-15
 > mpi.spawn.Rslaves(nslaves=5, needlog=TRUE)
Fehler in mpi.comm.spawn(slave = system.file("Rslaves.sh", package = 
"Rmpi"),  :
  MPI_Error_string: error spawning process
 > traceback()
3: .Call("mpi_comm_spawn", as.character(slave),
as.character(slavearg),
       as.integer(nslaves), as.integer(info), as.integer(root),
       as.integer(intercomm), PACKAGE = "Rmpi")
2: mpi.comm.spawn(slave = system.file("Rslaves.sh", package =
"Rmpi"),
       slavearg = arg, nslaves = nslaves, info = 0, root = root,
       intercomm = intercomm)
1: mpi.spawn.Rslaves(nslaves = 5)


There are no logfiles!
What was changed in the new version?

Best
Markus

-- 
Dipl.-Tech. Math. Markus Schmidberger

Ludwig-Maximilians-Universit?t M?nchen
IBE - Institut f?r medizinische Informationsverarbeitung,
Biometrie und Epidemiologie
Marchioninistr. 15, D-81377 Muenchen
URL: http://ibe.web.med.uni-muenchen.de 
Mail: Markus.Schmidberger [at] ibe.med.uni-muenchen.de
Tel: +49 (089) 7095 - 4599

On 8 April 2008 at 11:15, Markus Schmidberger wrote:
| I am using a cluster with LAM 7.1.3/MPI 2 and R 2.6.0.
| Rmpi version 0.5-5 is working very well.
| 
| Now I have tested "Rmpi 0.5-6". During spawning the Rslaves I get an
| error: MPI_Error_string: error spawning process

Not sure about your issue -- for Debian, we switched away from LAM to Open
MPI and everything is working just fine right out of the box.  Further, while
were converting to Open MPI, I had 'frozen' my work installation at the
'last
known' LAM release.  For some reasons, that was LAM 7.1.1* -- I never got
Rmpi to work with the later LAM releases.  

However, Hao Yu and I were able to iron all issues on Debian and Ubuntu and
Rmpi, R, Open MPI, ... should 'just work' with current versions. Also,
the
LAM team suggests to move to Open MPI.

Dirk
(Debian maintainer for R, OpenMPI, Rmpi, snow and a few other things)

--
Three out of two people have difficulties with fractions.