Does the Receptor 2 use both cores?

[johnrule]

Does the Receptor 2 actually utilize both cores?

This question is to Muse or any user. If you have Kontakt or Pianoteq installed you should be able to go to the 'Options' panel to determine if the software itself is using both cores.

Thanks,
JR

[looneytunes]

Hi John,

I don't think that muse is taking advantage of the second core. I can't find an exact quote on this (though there is this thread that describes the rationale of moving to core 2 architecture). Perhaps someone at muse told me this.

In any case, Muse seems to recommend turning off plugin options that help the plug run on multiple cores.

Hope this helps,
Kevin L

[johnrule]

I don't think that muse is taking advantage of the second core.

Actually, I am wondering if they are not able to...that is why I am asking. If there is no response from anyone at Muse I would say that they cannot.

[edit]
I would still like to know from any users if Pianoteq or Kontakt (or similar) actually 'try' to use multi-processor support, or do they disable on their own...

Thanks for the reply,
John

[fedde]

Hi folks,

I am not 100% sure, but I would be very surprised if Muse would not use both cores. I think that the processing load of plugins and the os is divided between the cores. So for example that plugin 1 runs on core 1 and plugin 2 on core 2. I can imagine that because of this Muse advises to disable multi-core support within the plugins itself. It might cause an uneven spread of the processing load over cores or even cause instability.

Fedde

[johnrule]

I am not 100% sure...

Thanks for the reply Fedde, and this is why I would appreciate an official response from Muse. In fact, it seems so tricky (read here) that I wouldn't be surprised if the answer was "no", and that is why they are telling Receptor 2 customers to turn it off when they can.

JR

[johnrule]

OK...how about a simple test?

Here are my humble specs for a dual core machine running Pianoteq 3:

CPU ID = AMD 64 x2 Dual Core 5600+
Multicore rendering = checked (active)
CPU freq = 2870
Performance index = 39
Sample rate = 44100
Buffer size = 64 samples


What does the Receptor 2 report? Is the "Multicore rendering" option checked? What is your "Performance index"?

Thanks,
JR

[johnrule]

Muse advises to disable multi-core support within the plugins itself.

So, basically, the Receptor 2 is a single-core machine?

JR

[johnrule]

OK...how about a simple test?

Here are my humble specs for a dual core machine running Pianoteq 3:

CPU ID = AMD 64 x2 Dual Core 5600+
Multicore rendering = checked (active)
CPU freq = 2870
Performance index = 39
Sample rate = 44100
Buffer size = 64 samples


What does the Receptor 2 report? Is the "Multicore rendering" option checked? What is your "Performance index"?

Well, I suppose more Receptor owners have Reaktor installed than Pianoteq...so let's compare performance specs with Reaktor and the "Steampipe" ensemble loaded:

Sample rate = 44100 khz
CPU usage = 8.8%

The same machine specs apply (see above), and the only difference is that this is Reaktor 5.5.1 on my desktop machine. Just to add another reference, I will provide my Receptor 1 specs:

Mobile AMD 64 Single Core = 2.613 Ghz
Buffer size = 64 samples

(Pianoteq 3.6.1)
Performance index = 25
Multicore rendering = off

(Reaktor 5.1.5 "Steam Pipe")
Sample rate = 44100 khz
CPU uage = 10.6%

Can anyone provide specs from their Receptor 2 for either Pianoteq or Reaktor? I am simply trying to determine real-world performance of the Receptor 2, and if the second core is used or not.

Thanks,
JR