Re: [X2Go-User] Pb with x2go agent on ppc64 system

2014-06-11 Thread Stefan Baur
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Am 11.06.2014 13:30, schrieb Mike Gabriel:
 
 As this is a very special case, I cannot give more advise on this 
 without being contracted and payed for the time I would have to
 give for helping with a solution.

Do you think you could at least give him a hint as to where that
message is pulling the IP from and how it is being mangled/processed
before that?

My guess is that there's some self-made conversion routine somewhere
that only works on little-endian architectures like x86 and x64.

PPC64 is big-endian by default.

@Sebastien: Wikipedia claims that PPC64 can be switched to
little-endian, though big-endian is the default. Could you please
check if such a switch is feasible for you and if it makes the problem
go away?

- -Stefan
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Re: [X2Go-User] Pb with x2go agent on ppc64 system

2014-06-11 Thread sebastien chabrolles
The problem is that this switch to little Endian is available on Power8 only 
and it is dependent to the Linux distro. Because it is new, most of the Linux 
distro are BigEndian today. (This could change in the future). 

Only Ubuntu move to ppc64le. 

So we can't easily switch to LE with fedora are redhat today. 

---
Sébastien Chabrolles 
Power Systems Benchmark Specialist
IBM Client Center, Montpellier 
1 rue vieille poste 34000 Montpellier FRANCE 
Tel +33 4 67 34 40 95 
Email : s.chabrol...@fr.ibm.com

 Le 11 juin 2014 à 13:51, Stefan Baur newsgroups.ma...@stefanbaur.de a 
 écrit :
 
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Am 11.06.2014 13:30, schrieb Mike Gabriel:
 
  As this is a very special case, I cannot give more advise on this
  without being contracted and payed for the time I would have to
  give for helping with a solution.
 
 Do you think you could at least give him a hint as to where that
 message is pulling the IP from and how it is being mangled/processed
 before that?
 
 My guess is that there's some self-made conversion routine somewhere
 that only works on little-endian architectures like x86 and x64.
 
 PPC64 is big-endian by default.
 
 @Sebastien: Wikipedia claims that PPC64 can be switched to
 little-endian, though big-endian is the default. Could you please
 check if such a switch is feasible for you and if it makes the problem
 go away?
 
 - -Stefan
 -BEGIN PGP SIGNATURE-
 Version: GnuPG v2.0.22 (MingW32)
 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
 
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Re: [X2Go-User] Pb with x2go agent on ppc64 system

2014-06-11 Thread brian mullan
Stefan

By not-routable... I did mean not route-able over the Internet...  of
course you could do it for a private local lan environment.

It might be a sw problem but it could be a topology/implementation issue...
Were the machines VMs, were they LXC containers, was x2goserver in a IaaS
cloud somewhere, was it just a PC/laptop on a private network.Were
these different machines in different networks and do they get rebooted and
assigned new IP addresses?

sorry for the confusion... just wanted to ask the questions.

brian


On Wed, Jun 11, 2014 at 5:44 PM, Stefan Baur newsgroups.ma...@stefanbaur.de
 wrote:

 Am 11.06.2014 23:39, schrieb brian mullan:
  As 10.x.x.x is non-routeable you must be running in a Virtual Machine
  environment like virtualbox or kvm or vmware?

 *ahem*.

 10.x.x.x is routable. Like 192.168.x.x and 172.16.x.x etc.

 Those ranges are reserved for private use, i.e. behind a NAT, so they're
 not unique and don't show up on the public internet - but they're
 perfectly routeable within your own, local IP-based network setup.

 In fact, most of the machines I sell have a local network in the
 192.168.x.z routing to another local network in the 172.16.a.b range and
 to another one in the 192.168.y.z range (where y != x).

 Works perfectly well.

 -Stefan
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