[Paracomp-users] Making samples single node friendly

[Kumar, S. (STSD) <shr...@hp...>]

The samples which we currently suffer from two deficiencies :
1. They all expect to be run on a cluster
2. Launch scripts are available only for HP SVA

These make it difficult for people who don't have access to SVA to try
out the library.

So I want to modify some of the samples so that they can be run on a
single node.=20

I don't want to touch the beginner samples since they are intended to be
as simple as possible.  The advanced samples (currently only multitile)
can't be run meaningfully on a single node. That leaves the intermediate
samples.

Here's what I am thinking of doing :
1. Modify the "boundingbox" and "multiple-framelets" samples so that
they can run on a single node
2. Multiple instances running on the same node will mean multiple
windows onscreen.  When the windows overlap, then framebuffer readback
will give wrong results on the windows which are occluded. So, there
will be a way to ask the slaves to use pbuffers. This has the
disadvantage that the user can't see the images on the slaves, but that
should be OK.
3. Scripts to run the samples on both single nodes and multiple nodes.
Scripts will depend on passwordless ssh/rsh.

Comments?

-- Shree