Help with configuring Qmaster for optimal render times.

I have a 6 machine Qmaster cluster. All machines in the cluster are PowerPC based and I have set up the cluster manually through Qadministrator. I personally like to have everything set up manually so no changes can be made for any reason to this cluster. I have processed a 2.5GB video in the cluster and in an Intel based Mac Pro.
Using Compressor, my output for the file is H.264 for iPod video and iPhone 640x480. The source was placed on an external Firewire 800 drive and destination is to the local disk on the Intel machine.
For the cluster, the source, also from the external Firewire 800 drive, is connected to the cluster controller, which has full read write access to all nodes in the cluster and is not a node in the cluster itself, just set to be the cluster controller. ( I saw this setup on a Qmaster setup page here, http://www.eventdv.net/Articles/News/Feature/Distributed-Network-Encoding-with-A pple-Compressor-37923.htm ) Also, I am using the same output settings, H.264 for iPod video and iPhone 640x480, and output is being written to the cluster controller local disk.
Once the batch is completed, it takes 23 minutes to render the video in the cluster as opposed to 25 minutes on the Intel machine. Not the difference in render time that I hoped for.
Here are the specs for the machines,
Cluster nodes:
1.6 Ghz Powerpc g5 1.25 GB
1.8 Ghz PowerPC G5 4GB
Quad 2.5 Ghz PowerPC G5 2.5 GB RAM
Dual 2.0 Ghz PowerPC G5 2.5 GB RAM
Dual 2.0 Ghz PowerPC G5 6 GB RAM
Dual 2.7 Ghz PowerPC G5 2.5 GB RAM
Cluster Controller:
Dual 2.0 Ghz PowerPC G5 2.5 GB RAM
Intel Machine:
2 x 2.26 quad core Intel Xeon 6GB RAM
Now I know these machines in the cluster are old but all machines, except for the cluster controller, have gotten fresh installs of Leopard 10.5.8, all relevant updates applied and fresh installs of FCP6, Qmaster and Compressor. I still cannot figure out how to speed up rendering. Is there something in this setup that I am doing wrong or is it the limitations of the old hardware. In theory, it should break up this video into segments across all machines in the cluster but it doesn't. The chunk of segments are sent to the Quad G5 and yes I have enabled multiple cores in the Qmaster prefs pane. So I figured i'd only enable 2 instances on the quad core machine and then it started to send segments to other machines but render time is still slow.
Also, even though all machines had read/write access to each other, I would scroll through the log files and see that it could not read the segment from the source media, but I could clearly see the activity light flickering.
After all of this trial and error, I still cant get the render time under 23 mins for this video.
If there's anyone out there with some advice, it would be much appreciated. Also, I forgot to save a copy of the log file, so my fault on that one but I will post once I get a chance to get back to working on that cluster.
Thanks.

Update:
So I have been able to get the cluster working. I've used Compressor and have the source media located in the shared folder that the controller mounts as cluster storage on all of the machines. The problem that I can't figure out now is why the cluster won't read the source media from any other location. I've read through Qmaster documentation and the permissions are supposed to be bypassed when you are using Qmaster.
I have both the mac HD and clusterstorage drives mounted for each machine, on each machine. Still, the cluster won't transcode the file unless I drop the media into the shared folder first. Every sharing option I could think of has been enabled. I have enabled file sharing, appletalk, set read & write permissions for each drive in each machine for all users and It still won't work any other way.
It just seems impractical to have to first copy the source media to the shared folder mounted by the controller since all locations on each machine have been totally opened up.
If anyone has some advice about this issue, it would be greatly appreciated.

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                         e.printStackTrace();
          exitButton.addActionListener(new ActionListener()
               public void actionPerformed(ActionEvent ae)
                    System.exit(0);
          fileShuffle.addActionListener(new ActionListener()
               public void actionPerformed(ActionEvent ae)
                    if (ae.getSource() == fileShuffle);
                    try
                         Runtime.getRuntime().exec("cmd.exe /c start c:\\DBS\\fileShuffle.bat");
                    catch(Exception e)
                         System.out.println(e.toString());
                         e.printStackTrace();
          sendDBS.addActionListener(new ActionListener()
               public void actionPerformed(ActionEvent ae)
                    if (ae.getSource() == sendDBS);
                    try
                         Runtime.getRuntime().exec("cmd.exe /c start c:\\DBS\\sendDBSFile.bat");
                    catch(Exception e)
                         System.out.println(e.toString());
                         e.printStackTrace();
          c.add(receiveDBS);
          c.add(filePrep);
          c.add(fileShuffle);
          c.add(sendDBS);
          c.add(exitButton);
//          c.add(statusbar);
     public static void main(String args[])
          Buttons xyz = new Buttons();
          xyz.setVisible(true);
     }What I would like help with is the following
I would like output to either a JLabel or JTextArea to appear if a file appears on the network. Something along these lines
If file named nststrace*.* is in \\[network path] then output Download successful, please proceed.
btw I have done my best to search this forum for something similar and had no luck, but I am looking forward to Encephalopathics answer as he/she has consistently made me laugh with posted responses (in a good way).
Thanks in advance, Paul.

Hospital_Apps_Monkey wrote:
we're starting to get aquainted, but I think "best friend" could take a while as it is still as hard going as I recall, but I will persevere.Heh, it's not so bad! For example, if I had no idea how to test whether a file exists, I would just scan the big list of classes on the left for names that sound like they might include File operations. Hey look, File! Then I'd look at all of File's methods for something that tests whether it exists or not. Hey, exists! Then if I still couldn't figure out how to use it, I'd do a google search on that particular method.

Help with Mathscipt and for loop

I have a code in Mathscript/matlab and I need to output the array out. One option is my first code,the other option is using a for loop, but I am only getting the last ouput out. I need to get the whole output out.
Any help.
Thanks
Solved!
Go to Solution.
Attachments:
Help with Mathscript_for loop.vi ‏115 KB
Help with Mathscript_for loop2.vi ‏84 KB

Here's how it should look like.
Message Edited by altenbach on 10-30-2008 05:12 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
MathscriptInFOR.png ‏15 KB

Please help with RMAN dup for RAC db

Happy Holidays!! All,
I need help with the following issue:
Both target and auxiliary databases are:
Database version is 10.2.0.3 with 2-node RAC db
Servers are MS 2003
Oracle Clusterware 10.2.0.3
Oracle ASM for storage
I have run the rman dup from RAC to a single instance db for a while. This is the first time I ran from RAC to RAC. This auxiliary db was refreshed before and was up for a while and was managed by server control tool. Now I am trying to refresh it with new backup files from production. I did the following as people suggested:
1)     shutdown instance in the second node.
2)     Startup nomount mode in the first node
3)     Run RMAN dup
It failed in the same place with slightly different errors. I pasted error messages at the bottom. I already created a TAR with Oracle but would like to know if anybody has any info related to this. Also I have several questions to ask:
1)     Should I stop all services related to Oracle in node-2
2)     Should I stop all clustware related services in node-1 except oracleCSServie since ASM uses it?
3)     Is there any way I can finish the dup manually from the place I failed? What going to happen if I don’t finish the rest of the dup and go ahead with “alter database open resetlogs”?
4)     How do I remove the database from under Server control – I already run “srvctl remove database -d atlrac” successfully. Is this all?
Thanks a lot for your help and have a great holiday season!!!
First time run:
contents of Memory Script:
shutdown clone;
startup clone nomount ;
executing Memory Script
database dismounted
Oracle instance shut down
connected to auxiliary database (not started)
RMAN-00571: ====================================================
RMAN-00569: ======= ERROR MESSAGE STACK FOLLOWS ==============
RMAN-00571: =============================================
RMAN-03002: failure of Duplicate Db command at 12/21/2009 20:24:47
RMAN-03015: error occurred in stored script Memory Script
RMAN-04014: startup failed: ORA-00610: Internal error code
Second time run:
contents of Memory Script:
shutdown clone;
startup clone nomount ;
executing Memory Script
database dismounted
Oracle instance shut down
connected to auxiliary database (not started)
RMAN-00571: ===================================================
RMAN-00569: ========== ERROR MESSAGE STACK FOLLOWS ==========
RMAN-00571: ===================================================
RMAN-03002: failure of Duplicate Db command at 12/22/2009 15:53:27
RMAN-03015: error occurred in stored script Memory Script
RMAN-04014: startup failed: ORA-03113: end-of-file on communication channel
Shirley

1) Should I stop all services related to Oracle in node-2
No, you just need to stop the second instance.
2) Should I stop all clustware related services in node-1 except oracleCSServie since ASM uses it?
No, you don't need to stop anything. Just have the instance startup nomount.
3) Is there any way I can finish the dup manually from the place I failed? What going to happen if I don’t finish the rest of the dup and go ahead with “alter database open resetlogs”?
You have not shown enough information. Did the restore succeed ? Did the recover succeed ? What was it doing when it failed ?
4) How do I remove the database from under Server control – I already run “srvctl remove database -d atlrac” successfully. Is this all?
Yes, srvctl remove database is all you need. (unless you also want to remove from listener.ora, tnsnames.ora, oratab etc)

Help with configuring Qmaster for optimal render times.

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