Derek Leach
03/26/2009 8:55 AM
post25311
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Hi Malte,
Well, we haven't _intentionally_ removed any pathmgr stuff from Photon, but I am unsure if it still "works". It is a
cool concept, but I am not sure if there really is a useful "use case" for this capability ... unless you have two
really memory constrained systems. You would be piping draw stream and commands over the net ... offscreen/pgshmem
might not work as well.
Do you have an actual scenario in mind?
Regards,
-Derek
________________________________
From: Malte Mundt [mailto:community-noreply@qnx.com]
Sent: Thu 26/03/2009 7:02 AM
To: photon-graphics
Subject: Photon and QNET
Hi,
I would like to understand if Photon and QNET have any relationship. Is it possible to use remote Photon on a different
node over QNET? I would use phditto to do that, but it uses IP.
But what about starting a graphical application on a system that has no Photon at all, but would use a remote Photon
over QNET? All display etc. would then be on the remote machine, but the process itself would run locally... is this
possible? Is it useful?
- Malte
_______________________________________________
Photon microGUI
http://community.qnx.com/sf/go/post25300
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Max Feil
03/26/2009 11:33 AM
post25361
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Hi Malte. Customers have used this from time to time. It could be useful
if there was a lot of non-graphical processing to be done that needed a
separate CPU, with graphical output that is not too complicated so it
doesn't slow down too much over the network. eg.:
/usr/photon/bin/phcalc -s/net/<hostname>/dev/photon
As Derek said there would be problems with offscreen contexts and shared
memory images. Phrelay was designed to get around these problems.
I have also tried running io-graphics connected to the remote machine.
This acts as kind of a ditto, with no input available. Set PHOTON and
PHFONT to point to /net/<host>/dev/photon
and /net/<host>/dev/phfont respectively, then as root start io-graphics.
There will be shmem and offscreen problems.
Cheers,
Max
-----Original Message-----
From: Malte Mundt [mailto:community-noreply@qnx.com]
Sent: Thursday, March 26, 2009 7:03 AM
To: photon-graphics
Subject: Photon and QNET
Hi,
I would like to understand if Photon and QNET have any relationship. Is
it possible to use remote Photon on a different node over QNET? I would
use phditto to do that, but it uses IP.
But what about starting a graphical application on a system that has no
Photon at all, but would use a remote Photon over QNET? All display etc.
would then be on the remote machine, but the process itself would run
locally... is this possible? Is it useful?
- Malte
_______________________________________________
Photon microGUI
http://community.qnx.com/sf/go/post25300
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