Re: RE : [Opensg-users] Cluster example

[Marcus R. <mar...@ig...>]

Raymond de Vries wrote:

> Hi,
> 
> I found this old message about cluster rendering. I'm trying to use the 
> test apps on 2 computers (1 server, 1 client).
> 
> I do just as Marcus mentions in this mail. However, no windows are 
> opened at all, only the "Volume..." message is shown on tje client... I 
> am using version 1.1.0, and made it myself on a woody debian system 
> (with gcc 2.95).


try to set the environment variable OSG_LOGLEVEL_LEVEL to debug
Look at the logs of servers and clients. You should get some messages like
waiting for request of SERVERNAME
try to connect SERVERNAME

try multicast
set option -m on server and client

> 
> To start with, can you explain a bit more about the server names? Can I 
> make them up myself, and you talk about "assign a name to each server". 
> Do I need to explicitly assign one (I expect not...)


The client sends a broadcast message with the server name it whants to 
connect. The server with the given name responds to this broadcast 
message with its network address. That means you can use names like 
wall_left, cave_top, ...


> 
> thanks a lot!
> Raymond
> 
> 
>> Try
>>
>> on Server1
>> testClusterServer -m server1
>> on Server2
>> testClusterServer -m server2
>>
>> on Client
>> testClusterClient server1 server2
>>
>> The names server1 and server2 are symbolic names. They are NOT 
>> hostnames. I think that's your problem. Your have to assign a name to 
>> each server.
>>
>> If you whant to use multicast, then use -m on server and client side.
>>
>> Please use -C OR -M
>>
>> -C is intended to do parallel load balanced rendering to compose a 
>> final image.
>> -M is used to drive a multiprojector setup
>>
>> Network problems
>>
>> try
>> ping `hostname`
>> If you get
>>
>> pc1096: /etc] {179} % ping `hostname`
>> PING pc1096.igd.fhg.de (127.0.0.2) from 127.0.0.2 : 56(84) bytes of ata.
>> 64 bytes from pc1096.igd.fhg.de (127.0.0.2): icmp_seq=1 ttl=255 
>> ime=0.037 ms
>> 64 bytes from pc1096.igd.fhg.de (127.0.0.2): icmp_seq=2 ttl=255 
>> time=0.034 ms
>>
>> there is something wrong with your configuration.
>> remove
>> 127.0.0.2       pc1096.igd.fhg.de   pc1096
>> from your hosts file.
>> I think this is a problem with SuSE
>>
>> Marcus
>>
>>
>>
>>>> On the server pc1:
>>>>
>>>> ./testClusterServer -m (It should wait for a client to connect via
>>>> Multicast)
>>>>
>>>> On the client pc2:
>>>>
>>>> ./testClusterClient -m -x400 -y300 -C -r1 -M (it should try to find a
>>>> server by multicast?)
>>>>
>>>> Also tried :
>>>> ./testClusterClient pc1 -M ... but nothing better.
>>>>
>>>> But there is only one socket opened on the server side, and there is no
>>>> GL window opened on it. There's just one window opened with the 
>>>> torus on
>>>> the client side, without any socket opened, with this output message:
>>>>
>>>>    Volume: from -2.5, -2.5, -0.5 to 2.5, 2.5, 0.5
>>>>    7.14143
>>>>
>>>> Can you explain us more on how to compile and configure the server and
>>>> the client and the meaning of all this options (client)?
>>>>
>>>> -- End of excerpt from dasilva
>>>>
>>>
>>> Hope it helps
>>>
>>>     Dirk
>>>
>>>
>>>
>>
>>
>>
>>
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> 
> 
> 
> 
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