[Wien] k-parallel execution II

[Jorissen Kevin]

Hi,
 
'localhost' usually works.
If you don't want to connect through rsh or ssh, but rather in the background, edit the file
$WIENROOT/parallel_options
and set USEREMOTE to 0 instead of 1.
Then your machines-file
1:localhost:1
1:localhost:1
 
ought to work, I believe.
 
Kevin.
 

	-----Oorspronkelijk bericht----- 
	Van: Torsten Andersen [mailto:thor at physik.uni-kl.de] 
	Verzonden: wo 11/26/2003 8:46 
	Aan: wien at zeus.theochem.tuwien.ac.at 
	CC: 
	Onderwerp: Re: [Wien] k-parallel execution II
	
	



	Bertoni Giovanni wrote:
	> First: Sorry gelfand, I have done an auto-reply and I sent you directly
	> the mail istead to the wien-list!
	>
	> second: Dear users,
	>
	> putting in the .machine:
	>
	> 1:localhost
	> 1:localhost
	>
	> for a 2 processors machine, I have the error
	>
	> STDOUT
	> ----------------------------------
	> LAPW0 END
	> localhost: Connection refused
	> localhost: Connection refused
	> -----------------------------------
	Do you have the loopback device activated? In /etc/hosts should be a
	line with 127.0.0.1 localhost.
	
	Does your host accept rsh or ssh connections?
	
	Have you set your machine up as a shared-memory machine in siteconfig?
	Then it should be started in the background, not via rsh, I think...
	
	>
	> is it a probem of configuration?
	> please tell me.
	> thank you
	> giovanni
	>
	> gelfand a écrit :
	>
	>>This is very easy to do.
	>>In the .machines file, just put
	>>1:localhost
	>>1:localhost
	>>1:localhost
	>><<as many lines as you have processors>>
	>>This only makes sense if you are using single-threaded BLAS/LAPACK
	>>libraries.  For dual-CPU machines it is definitely the way to go.
	>>For a 16-way machine, I'm not sure, it depends on how much RAM
	>>is available per CPU (you certainly don't want to cause the machine
	>>to swap to disk).
	>>
	>>
	>>>===== Original Message From Bertoni Giovanni <giovanni at cemes.fr> =====
	>>>Dear users,
	>>>
	>>>I have a question about k-parallelization:
	>>>
	>>>is it possible to do a k-parallelization on a single machine with
	>>>multiple processors?
	>>>for exemple, I try on a machine with >= 8 processors.
	>>>I have tried with the TiC example (47 k-points) in interactive mode (no
	>>>scripts or batch files...)
	>>>
	>>>this is the .machine file
	>>>-----------------------------------------------
	>>># .machines is the control file for parallel execution. Add lines like
	>>>#
	>>>#   speed:machine_name
	>>>#
	>>># for each machine specifying there relative speed. For mpi
	>>>parallelization use
	>>>#
	>>>#   speed:machine_name:1 machine_name:1
	>>>#   lapw0:machine_name:1 machine_name:1
	>>>#
	>>># further options are:
	>>>#
	>>>#   granularity:number (for loadbalancing on irregularly used machines)
	>>>#   residue:machine_name  (on shared memory machines)
	>>>#   extrafine         (to distribute the remaining k-points one after
	>>>the other)
	>>>#
	>>># granularity sets the number of files that will be approximately
	>>># be generated by each processor; this is used for load-balancing.
	>>># On very homogeneous systems set number to 1
	>>># if after distributing the k-points to the various machines residual
	>>># k-points are left, they will be distributed to the
	>>>residual-machine_name.
	>>>#
	>>>1:localhost:8
	>>>lapw0:localhost:8
	>>>--------------------------------------------------
	>>>
	>>>..very simple. and this is the TiC.dayfile
	>>>
	>>>--------------------------------------------------
	>>>...
	>>>   start      (Tue Nov 25 18:04:11 MET 2003) with lapw0 (20/20 to go)
	>>>
	>>>>  lapw0 -p   (18:04:11) starting parallel lapw0 at Tue Nov 25 18:04:12 MET
	>>
	>>2003
	>>
	>>>-------- .machine1 : 8 processors
	>>>localhost:8
	>>>--------
	>>>**  lapw0 crashed!
	>>>0.0u 0.3s 0:01 24% 0+0k 10+3io 0pf+0w
	>>>
	>>>
	>>>>  stop error
	>>>
	>>>---------------------------------------------------
	>>>
	>>>
	>>>if i don't use parallel lapw0, I have the crash in lapw1. the test was
	>>>done on a machine that has the mpirun.
	>>>please tell me.
	>>>if is not possible to do a k-parallelization on a single machine, I will
	>>>use a fine grained parallelization, and I will have another question for
	>>>you... (next time)
	>>>Thank you.
	>>>giovanni.
	>>>_______________________________________________
	>>>Wien mailing list
	>>>Wien at zeus.theochem.tuwien.ac.at
	>>>http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
	>>
	>>Martin Gelfand
	>>
	>>Associate Professor.............Phone: 970 491 5263
	>>Department of Physics.............Fax: 970 491 7947
	>>Colorado State University.......Email: gelfand at lamar.colostate.edu
	>>Fort Collins CO 80523-1875
	>
	> _______________________________________________
	> Wien mailing list
	> Wien at zeus.theochem.tuwien.ac.at
	> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
	>
	
	--
	Dr. Torsten Andersen                     TA-web: http://deep.at/myspace/
	AG Hübner, Department of Physics, Kaiserslautern University, and
	Condensed Matter Theory Group, Department of Physics, Uppsala University
	Web: http://www.fysik4.fysik.uu.se/         http://www.physik.uni-kl.de/
	
	
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