| Re: Maxxing a Magma [message #93442 is a reply to message #93438] |
Sat, 08 December 2007 17:13   |
DJ
Messages: 1124
Registered: July 2005
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Senior Member |
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I just did a little PCI bandwidth torture test at 88.2KHz instantiating 33
DSP (and two of these were UAD-1 Neve 33609's which are the equivalent of
about 5 other processors) based plugins on a 10 track project. UAD-1
resources were at 90% and the resources of the TC cards were at around 85%.
No dropouts or other racket at all with the buffers set to 1024. CPU
cruising along at about 20%, no disk streaming spikes (this is something I
need to test with larger track counts though) and I've got a little bit of
wriggle room on adding more DSP based plugins, depending on what they
are............and I haven't used a single native plugin yet. I'd say that
the system is robust enough to do pretty much any tracking/mixing job that I
might be asked to do here..
I'm going to quit sweating the upgrade situation for another year or so. By
that time, hopefully there will be the possibility of exponentially better
performance at lower latencies. Right now, this system is lookin' good with
DSP horsepower to burn.
Now.......back to the lab.
;o)
"Neil" <OIUOI@OIU.com> wrote in message news:475b173b$1@linux...
>
> FWIW, I don't believe you'll get much benefit from
> upconverting a 44.1 song to 88.2 - the plugin's will
> process with the higher resolution, but there's
> not going to be anything better about the files that were
> originally tracked at 44.1, so unless you've got a lot of
> overdubs to do on each of those songs, you're probably better
> off staying at 44.1 for the rest of the tracking, but then when
> you mixdown, go ahead & render to an 88.2k/.24-bit stereo file
> for mastering purposes.
>
> Neil
>
>
> "DJ" <animix _ at _ animas _ dot _ net> wrote:
>> I've got two Powercore cards and 4 x UAD-1 cards working in a single 13
>
>>slot Magma with the POCO's sharing IRQ 18 and the UAD-1's sharing IRQ 17.
> My
>>3 x RME cards are in a second Magma all sharing IRQ 19 so pending a
>>serious
>
>>torture test to test the PCI bandwidth, it appears that this may play
>>nice.
>>
>>I'm using an older gigabyte GA-K8NS Ultrra 939 (AGP based board) and the
> AGP
>>is on IRQ 16 so since there is no IRQ sharing, unless my PCI bandwidth is
>
>>all used up, I'm not expecting any problems.
>>
>>I'm currently converting everything I'm working on to 88.2KHz. I don't
>>know
>
>>if this is going to end up being a waste of time or not, but I figure,
>>since
>
>>I made the decision to move to an 88.2 capable system, I need to start
>>using
>
>>it. I've spent quite a bit of time and effort getting all my hardware DSP
>
>>processors to function at 88.2 and I wanted to try to offload as much CPU
>
>>load to outboard hardware and DSP cards as possible. Since my UAD-1
>>resources will be cut in half, the extra POCO's will be there to pick up
> the
>>slack. I've got a couple of 750GB SATA Barracudas to handle the
>>recording/playback and backup so here goes.
>>
>>Upsampling existing projects in Cubase is pretty easy to accomplish and
>
>>perhaps the OD's and final DSP processing at 88.2 will add a bit of extra
>
>>mojo to the mixes..............before they get hosed by the MP3 codec.
>>
>>Just in case someone wants to go down this road, the compatibile slots in
>
>>the Magma are as follows:
>>
>>1, 5, 7 and 11 share IRQ 17
>>2 and 6 share IRQ 18
>>If you are adding a second Magma, use 1, 5, 7 or 11 for any audio cards
> or
>>DSP cards. They will all probably populate IRQ 19, or some other
>>compatible
>
>>IRQ that doesn't share with the AGP, or the devices in the other Magma.
> If
>>you've got two PCI slots that don't share with the AGP or each other this
>
>>should work.
>>
>>OK....I'm off to give this thing a hard test drive. I'll let you know if
>
>>anything catches on fire.
>>
>>;o)
>>
>>
>>
>
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