[Paraview] Tiling configuration?

[Phillip Ezolt (exchange)]

Amy & Berk,
	
> The first machine in the list you pass to MPI is used as the upper 
> left  tile.  Subsequent machines fill in a single row, and then the 
> rows are 
> filled from top to bottom.  For your 2 x 2 tiled display to give the 
> appropriate results, the machines should be controlling the tiles as shown 
> below:

This mapping can not be changed within a configuration file? 

Something like (which would reverse the order of the tiles): 

mpi_node_id     tile_id
-----------------------
0                  3
1                  2
2                  1
3                  0

...

It looks like if I can whip my MPI job launch into shape, I can work
around this. (I am by no means an MPI expect, and I am looking into how
to solve this.)  I haven't yet figured out how to use mpirun to specify
the exact order of nodes...  When I reverse list,
(tigger6,tigger5,tigger4,tigger3) the MPI ranks are the same as when I
launch it with (tigger3,tigger4,tigger5,tigger6).

In any event, I was hoping that we could use paraview to set the tile
layout.  However, it looks like I have to make mpirun put the correct
MPI ranks on the proper display tiles.   I'll attack that. 

Thanks for the help, 
--Phil

On Tue, 2005-05-24 at 14:09 -0400, Amy Squillacote wrote:
> Hi Phil,
> 
> Which machines are displaying their results on which tile?
> 
> The first machine in the list you pass to MPI is used as the upper left 
> tile.  Subsequent machines fill in a single row, and then the rows are 
> filled from top to bottom.  For your 2 x 2 tiled display to give the 
> appropriate results, the machines should be controlling the tiles as shown 
> below:
> 
> tigger3 tigger4
> tigger5 tigger6
> 
> This issue is the same regardless of whether you use a .pvx file.
> 
> - Amy
> 
> At 01:49 PM 5/24/2005, Phillip Ezolt wrote:
> >Hi,
> >         I have a 2x2 tile display that I want to tile paraview (v2.0.1)
> >across.
> >
> >I am running in client/server mode, with 4 servers running in an MPI job
> >within a cluster, and a single client running outside the cluster.
> >
> >Servers are launched with the following:
> >
> >/opt/hpmpi/bin/mpirun -e DISPLAY=:0 -srun -w
> >"tigger3,tigger4,tigger5,tigger6" pvserver -rc --client-host=catan -
> >tdx=2 -tdy=2
> >
> >The client is launched with the following:
> >env PV_SEPERATE_RENDER_WINDOW=1 ./pvclient --reverse-connection -tdx=2 -
> >tdy=2
> >
> >Visualization works fine, but, unfortunately, the tile order is messed
> >up. The visualization on each of the tiles looks right, but the
> >tiles are in the completely wrong order. (It kinda looks like a messed-
> >up sliding-block puzzle. )
> >
> >How do I tell paraview the layout of tiles?
> >
> >I've seen some reference to a pvx file, but it is not documented (that I
> >could find) in the book.
> >
> >Any help is greatly appreciated.
> >
> >Thanks,
> >--Phil
> >--
> >Phillip Ezolt <Phillip.Ezolt at hp.com>
> >
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> >ParaView at paraview.org
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> 
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