Distributed Audio Processing Question

This is probably a dumb question, but would there be any value in using a Mac Mini (or multiple Mini's using a switch) for Distributed Audio Processing? I tend to favor complex reverbs across my mixes and will be using some software instruments and would like to reduce/prevent the processor hit as I'm on a 2.4GHz iMac. I'm running 4 gigs of RAM so memory shouldn't be an issue.
Yeah, I'm a Logic noob, so please be kind if this is a moronic idea :-p

Hi.
Interessting Question. The macmini must have an intel core cpu and gigabit ethernet. The older models don't fit the specs for Logics QNode wich is needed, to let the iMac do distributed audio processing on the macmini. Additionally you have to connect the two macs with a gigabit network.
http://www.apple.com/logicstudio/logicpro/specs.html
But i think there are better ways to fit your audio-needs. If you haven't bought the minis yet, buy an MacPro for this work and if this machine even aren't fast enough, then let the iMac do the distributed audio processing.
Additionally power can added to the MP with an Universal Audio DSP-Card.
http://www.uaudio.com/products/uad-dsp_menu.html
I don't know how your workflow looks like. If you don't need the effects at the same time you record the virtual instruments, then do all the processing after the recording. This way should be the cheapest and best.

Similar Messages

Will distributed audio processing work on Intel Macs?

I'm currently anticipating that I'm going to need more processing power to run virtual instruments and plug-ins in Logic Pro 7. The obvious solution is to get a second G5 and run it as a node, but I won't need it for a while yet. I might be able to put it off until the new Intel-based Macs come out next year, but then here's the key question: Does anyone know whether the Intel-based PowerMacs (and PowerBooks, for that matter...when they arrive) will be compatible as distributed audio processing nodes with a PowerMac G5 (PPC) host?

Macs is Macs. The processor will make no difference. It's the OS that counts.
How can you be certain? I have asked the same question elsewhere and the response I got was, "Even if anybody did know the answer to your question they would be developers who are under a strict Non-Dislcosure Agreement. You'll most likely just have to wait and see."
I'm not at all certain that it's a given. I'm not arguing your point that "It's the OS that counts." I agree. Nevertheless, we're talking about a significant change in fundamental hardware architecture, so the question as to whether a MacIntel and a PPC G5 will have the same interoperability as two G5s still seems reasonable to me. I don't doubt that it's possible, but I suspect that the MacIntel node machine might have to pay a price in CPU overhead for making the translation. After all, its software will be different.
I'll probably get another G5 anyway. I mean, it's not like it's going to be obsolete. I can run Logic Pro 7 in its current configuration for a looonnnggg time before I exhaust its capabilities. I'll run into hardware limitations long before I ever run into a software limitation.

Has Distributed audio processing been succesfull for anyone?

Can anyone who has worked with Distributed audio processing please post there set up and if it has been very successfull etc.
thanks

For your comps listed it may not be terribly valuable. It's not terribly valuable for mine-larger, more modern comps can handle alot more. You can always try it.

Distributed Audio Processing

Does this only work with G5"s? I'm looking at possibly upgrading to Logic Pro and I was really excited about Distrubuted Audio Processing but then I'd read something saying it only works on G5's. Is this true? Are there any other requirements?

Mmm, doesn't 'only' work on G5's, however, that is where you will see the most benefit, as there is 'some' overhead associated with the process.
It also says you need gigabit ethernet, however, it will work in hundred base, but the above statement applies also. See if can borrow a G5 and have a go with your Powerbook. It is easy to setup and doesn't interfere with the node system. Make sure you install the latest versions of Logic and the latest Logic Node on the node system (G5).
Note, you can also use a Firewire cable between the units for networking, should the ethernet ports already be taken. (the newest Dual Core macs now have two gigabit ether ports!)

Distributed Audio Processing & Massive G5 Issues

Hi All,
Iv recently purchased Logic studio to run on my Dual 2GHZ G5 with 1gb ram. Logic Studio doesnt seem to like the machine to say the very least. I can have 6 Audio instruments running 4 audio tracks & a few plugs, say 10 & it goes into total shutdown. The CPU meter's off the hook, im getting some sort of digital crackling/distortion & loads of "cannot process audio in time" errors.
Could the issue be that there's only 1 GB of ram? If thats the case, i'll 4 GB's tomorrow. There's still 95GB left on the system drive.
Iv also just purchased a Macbook pro & im trying to set up distributed processing to see if that makes a difference. Iv connected both machines via eithernet, loaded logic onto both machines, launched the nodes & configured the rack view settings to toggle DAP on/off.
When I turn DAP on, I get a delay on the tracks that the other machine is meant to be handling? Has anyone ever had this issue? Its pointless using DAP if there's going to be a noticeable delay.
ANY help with this is greatly appreciated.
Thanks

Im running 512 atm. Any suggestions as to what I should be running????
512 should be fine - you should be able to get down to 128 really. Is there any improvement at 1024? Can you playback more reliably? At 512 I have nary a glitch.
How much ram are you using?
4GB. More than 1GB will help - but personally I think you have a more fundamental problem. I think you need to sort out the G5 performance issues first before you look at DAP. Your system definitely is under performing.
What interface are you using? Have you tried it with iternal audio? Any change?
Yes the i/o safety buffer is off. Should it be on?
leave it off.
Regards
Stephen

Distributed Audio Question

Hi All,
As a follow on to my previous post before I take the leap from Cubase to Logic I have 2 more questions.
1. For those that have used Distributed Audio, is it necessary and useful, or was it a pain in the a**? Does it work well? How many machines did you chain.
2. How does the licensing on distributed audio work (buying extra copies, etc)?
Does anyone have any links (Apple or otherwise) to information on Distributed Audio, all the stuff that was there and indexed in Google has since been removed with the launch of Logic Pro 8.
Cheers
T.

It's probably best to check out the documentation:
http://manuals.info.apple.com/en/LogicPro_8_UserManual.pdf
To answer your questions:
1. I never needed it. But if I ever do it's nice to know that it was there. It was very easy to setup. All you need is a Gigabit switch to attach your Macs or if you're using just two, connect them directly. I only ever chained two machines.
2. Logic comes with a node utility that you run on the other macs so you don't need to buy more than once copy of Logic. However, the new manual above indicates that if you want to run third party AU effects on node machines they will need to be authorized on those systems.
However, in Logic's AU manager you can independently select whether a 3rd party plugin is available for Node usage.

Distributing BPEL processes

Hi,
Does anyone have experience distributing BPEL processes across machines. I essentially want to split my process onto two machines so as not to overload a single box. So the questions are:
1. would i need 2 bpel servers ?
2. if ans wer to 1 is yes then would I need to make web service calls between these processes running on different boxes ..
regards,
v

Vikky,
Are you using 10g?
If BPELConsole is up but you don't see any process, you can go to the log files and see what is the problem.
It might relates to permissions, or DB issues etc....
Arik

10.9.2 lost audio and no core audio process present

This is a 2 month old MBP with the 512GB SSD and 16GB of RAM.
I've tried rebooting and reseting the PRAM as well as invoking the command in terminal to kill and start core audio process. Nothing. If I look in the Activity monitor there is no core audio process running. Right now I have no audio.
The problem presented itself after attemtping to plug in a pair of earphones. I've inspected the phone jack and it is clear of dust / debris.
Any suggestions would be greatly appreciated.

Ok, I found the core audio process - I didn't have "All Processes" selected in the View. I tried killing it but still no luck. I also tried resetting my SMC.

Distributed Transaction Processing Services in Oracle RAC 11.2

Hi,
Do we have to set the DTP parameter to TRUE for workload services that are going to be used for distributed transaction processing?
Something like this ...
srvctl modify service -d crm -s xa_01.service.us.oracle.com -x TRUE
Oracle 11.2 document is not very clear on this requirement. At one stage it says...
"Tightly coupled XA transactions no longer require the special type of singleton services (that is, Oracle Distributed Transaction Processing (DTP) services) to be deployed on Oracle RAC database. XA transactions are transparently supported on Oracle RAC databases with any type of services configuration."
But at the end of the same section...
"An external transaction manager, such as OraMTS, coordinates DTP/XA transactions. However, an internal Oracle transaction manager coordinates distributed SQL transactions. Both DTP/XA and distributed SQL transactions must use the DTP service in Oracle RAC."
So do we have to use DTP services with RAC or not?
Thanks,
-Sanjeev
Edited by: user12219014 on 28 Jan, 2011 8:04 PM

Hi Sanjeev,
I have some critical applications using Tuxedo on 10gR1/R2 RAC databases and there is no doubt to have with this versions.
Starting with 11gR1 it seems the main limitation is over...but there are still limitations ! To be honest I will keep the DTP parameter to true after the migration in 11.2 to avoid any problem. It is still recommended even if not mandatory :
To provide improved application performance with distributed transaction processing in Oracle RAC, you may want to take advantage of DTP services. Using DTP services, you can direct all branches of a distributed transaction to a single instance in the cluster. To load balance across the cluster, it is better to have several groups of smaller application servers with each group directing its transactions to a single service, or set of services, than to have one or two larger application servers.
Also check note 462060.1.
Best regards
Phil
Edited by: Philippe Florent on Jan 30, 2011 10:07 AM -- add documentation precision

WAAS Application Requests - Process Question

Non Technical Process Question
We all have forms we have our users complete when a firewall rule or change is needed. You may even have a similiar documents for when load balancers or DNS changes are required. Does anyone have document they can share that outlines what pieces of information are needed for intergrating applications into WAAS? What about ongoing changes?
Source, destination and TCP port information is really a very small portion of the what needed to maintain a clean a defined methodolgy within the WAAS manager. Does anyone have an example or can describe how you collect the initial information to set up WAAS but how do you keep track of changes that may be needed as the application charaterics change or the server farm expands horizontally?
Thanks - Sam

Sam,
the general answer for detailed information on how to configure WAAS for certain applications is described here:
http://www.cisco.com/en/US/docs/app_ntwk_services/waas/waas/v501/configuration/guide/policy.html
In general, WAAS comes preconfigured for the most widly used applications in the industry.
In order to understand, which configuration is necessary for a new application, one needs to understand the basic options WAAS offers.
These are two options:
1) Use an Application Optimizer (AO) if you need some dedicated protocol know how. ( e.g. (e)MAPI, CIFS, SSL, HTTP, ICA, to name some)
2) Generic TCP traffic is optimized using TCP Flow Optimization (TFO), Data Redundancy Elemination (DRE) and Lempe Liv (LZ) compression.
The in terms of processes, the question is:
1) Is there a policy preconfigured for the new application?
     a) yes
          If an AO is used, does the AO need configuration? ( example: SSL AO requires certificates)
          Do we have specialities which require further fine tuning? ( Answer is mostly: no, Example: non-standard ports)
     b) no
          You define what you need for the application based on the protocol characteristics.
          If you have defined these characteristics you can choose one of the AOs, or define which of the "generic" options fit the traffic. For example, for traffic that is already compressed, it does not much benefit from LZ, so choosing only TFO and DRE. Another example is traffic that has not much of dublicate data, perhaps it does not benefit a lot from DRE, so you configure TFO only.
Does that answer your question?
Thanks,
chris

Question related to my previous "background process" question.

Hello Folks:
Can I start a "Notification Service Subscriber" process through the
normal startup procedure for other servers---i.e. by adding it to the
config(ubb) file. If so, can I implement the background process as two
different CORBA servers calling each other asynchronously to accomplish
the work. Please let me know if there is any other way to accomplish
what I have stated in the "background process" question.
Thanks,
Ram Ramesh
678-358-3581

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Distributed Transaction Processing Services in Oracle 11.2

Hi,
Do we have to set the DTP parameter to TRUE for workload services that are going to be used for distributed transaction processing?
Something like this ...
srvctl modify service -d crm -s xa_01.service.us.oracle.com -x TRUE
Oracle 11.2 document is not very clear on this requirement. At one stage it says...
"Tightly coupled XA transactions no longer require the special type of singleton services (that is, Oracle Distributed Transaction Processing (DTP) services) to be deployed on Oracle RAC database. XA transactions are transparently supported on Oracle RAC databases with any type of services configuration."
But at the end of the same section...
"An external transaction manager, such as OraMTS, coordinates DTP/XA transactions. However, an internal Oracle transaction manager coordinates distributed SQL transactions. Both DTP/XA and distributed SQL transactions must use the DTP service in Oracle RAC."
So do we have to use DTP services with RAC or not?
Thanks,
-Sanjeev

Hi Sanjeev,
I have some critical applications using Tuxedo on 10gR1/R2 RAC databases and there is no doubt to have with this versions.
Starting with 11gR1 it seems the main limitation is over...but there are still limitations ! To be honest I will keep the DTP parameter to true after the migration in 11.2 to avoid any problem. It is still recommended even if not mandatory :
To provide improved application performance with distributed transaction processing in Oracle RAC, you may want to take advantage of DTP services. Using DTP services, you can direct all branches of a distributed transaction to a single instance in the cluster. To load balance across the cluster, it is better to have several groups of smaller application servers with each group directing its transactions to a single service, or set of services, than to have one or two larger application servers.
Also check note 462060.1.
Best regards
Phil
Edited by: Philippe Florent on Jan 30, 2011 10:07 AM -- add documentation precision

Why when playing downloaded music on apple tv through my distributed audio, it sometimes skips like a scratched record or just stops (in pause mode and won't play again) and yet i have full bars on the wireless in home service from the mac to the appletv?

Why when playing downloaded music on my mac through my appletv (I have distributed audio so play it through speakers not actually on the television), which is sent wireless from mac to the apple tv, does the music sometimes skip like a scratched record or stop playing (in pause mode) altogether and won't start again when I hit play? I have full bars on the wireless icon. Anyone experience this?

Full bars don't tell the whole story. These issues usually stem from interference, use istumbler to verify

Audio Processing Final Mix? - Advice

When creating a master program, I compress/limit my audio to appropriate levels. My program has a number of clips, some voice overs, music, etc,. In order to process the entire mix, I am creating a compound clip, then adding my audio processing to that. While this seems to work, it means that every program ends up being inside a compound clip.
Is there a better way?
thanks,
Geoff

Thanks Luis, though I'm not sure that applying individual effects to audio clips achieves the same result as processing the overall signal. e.g. a compressor on the overall output will cause music to sit nicely under the main voice over, whereas a compressor effect on both the voice-over and the music may cause the music to pump a little more against the voice-over, obviously depending on settings. One overall effect would seem to do the job far more efficiently, and require less plugins.
However, having to create the component is a disadvantage... just wondering if there was another way to treat the overall signal than creating the component clip.
thanks,
Geoff

I need block diagrams for audio processing effects such as echo,flanger,vibrato,chorus for implementing in labview?

i need block diagrams for audio processing effects such as echo,flanger,vibrato,chorus for implementing in labview? pls i need it very quickly........

Hi komalamani,
i need it very quickly...
So you better start coding soon!
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Distributed Audio Processing Question

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