Arkadi Posted December 19, 2010 Share Posted December 19, 2010 Hi - I'm noticing one of my 8 cores spikes up in the red zone while the others hover around 10-15%. With the exception of an occasional small pause that happens when I playback every few minutes, my system is running great. I have my latency set at 128 and 19 instances of Vienna Ensemble Pro going to two slave computers (170 instruments loaded). I heard the single core spiking could be related to VEP, but wanted to see if anyone here experienced this. Link to comment Share on other sites More sharing options...
74thStreetRecords Posted December 19, 2010 Share Posted December 19, 2010 i've had somewhat the same issue, but this i5 is only a dual core... i was able to run about 40 tracks w/multiple effect plug ins for a while, then it suddenly lost the cahonas...now it gives me sudden spikes on one core with system overload messages on a semi-regular basis...not really sure what happened... i figured if one core was getting to the breaking point it would dump that to the other...isn't that the point of having a multicore processor? ehh i'd like to see someone explain this as well, i'll keep tuned Link to comment Share on other sites More sharing options...
GStepper Posted December 20, 2010 Share Posted December 20, 2010 Arkadi, Have you tried to follow these recommendations ? http://support.apple.com/kb/HT3161 Link to comment Share on other sites More sharing options...
Janne Posted December 20, 2010 Share Posted December 20, 2010 Yes Its a problem because Logic doesnt flush memory regularly as it should. All of a suddent cpu begins spiking like mad (on my c2duo MBP and 8c MacPro) A restart usually solves the problem but its a real pain in the a... to work like that. Its totally unusable specially when using Native Instruments things that use a lot of memory without the external memory server. The link from apple how to share the load to all cores works perfectly until the cache gets full,afterwards its pointless. I also own two other DAW softwares and they dont have the same problem and work quite flawlesly on the memory area. The 64 bit variant of Logic is too crashy at the moment because of the 32 bit bridge. I hope they will solve this problem someday because its been present for quite a while and can be very annoying, especially if you have clients sitting behind you and the whole thing goes bonkers. Regards J Link to comment Share on other sites More sharing options...
Arkadi Posted December 20, 2010 Author Share Posted December 20, 2010 The only system anomaly I'm experiencing is a slight pause before playback every few minites. Other than that its working great. Not sure if it's related to this spiking issue, although my core on the far right is always peaking in the red zone while the others cores are just chillin having a martini on the beach. Link to comment Share on other sites More sharing options...
Arkadi Posted December 20, 2010 Author Share Posted December 20, 2010 I checked out that tutorial on spreading out the cores, but it seems to be related to effect plugins. Can the same be done with software instruments? I think its my several instances of Vienna Ensemble that are being relegated to that one core. So I'm wondering, is this a Logic issue or a Vienna Ensemble Pro / Software instrument issue? Link to comment Share on other sites More sharing options...
Jordi Torres Posted December 20, 2010 Share Posted December 20, 2010 I checked out that tutorial on spreading out the cores, but it seems to be related to effect plugins. Can the same be done with software instruments? I think its my several instances of Vienna Ensemble that are being relegated to that one core. So I'm wondering, is this a Logic issue or a Vienna Ensemble Pro / Software instrument issue? See this thead: http://www.logicprohelp.com/viewtopic.php?t=65609 J. Link to comment Share on other sites More sharing options...
BadOrange Posted December 20, 2010 Share Posted December 20, 2010 The only system anomaly I'm experiencing is a slight pause before playback every few minites. Other than that its working great. Not sure if it's related to this spiking issue, although my core on the far right is always peaking in the red zone while the others cores are just chillin having a martini on the beach. I think the issue is more complex than people realize. For example, If I load one instance of WVI, then click the double track, and d that lets say 5 times, it will all play with just one core. Now if I do this by first creating 5 empty instrument tracks, then loading the plugin afterwards, the processing is shared among the cores The stranger part is that if you use the multi out on the plugin, to reroute the direct signal so every instrument now has a corresponding AUX channel , it then reverts what was once being processed by many cores to just one core. I have yet to find a work around to the additional aux channels which is a bummer because part of getting the realistic orchestral sound requires this approach. Would also like to add that there are no FX for for this behaviour to occur. Rather peculiar and a definite bug that needs to be addressed. I've read everything there is on it and I just think it needs an update as there really is no workaround for some of the core spike issues. Link to comment Share on other sites More sharing options...
Arkadi Posted December 20, 2010 Author Share Posted December 20, 2010 If that's the case then hopefully the Logic developers read this forum and can get us a quick fix! 8) Link to comment Share on other sites More sharing options...
BadOrange Posted December 21, 2010 Share Posted December 21, 2010 I worry that they think all the core issues have to do with that thread they made and they won't pay attention. It is quite annoying for anyone that has to use many instances of the same plugin. Link to comment Share on other sites More sharing options...
Arkadi Posted December 21, 2010 Author Share Posted December 21, 2010 Well just for kicks I'll email apple but I wont get my hopes up. Link to comment Share on other sites More sharing options...
BadOrange Posted December 22, 2010 Share Posted December 22, 2010 some more info from a helpful chap at VI Basically anything sent to AUX channels is processed by just one core. That means any instrument with multi outs will now be processed by just one core. He also mentioned that it isn't just for multi instruments. He claimed that all aux and all bus are done via one core. I haven't tried the latter out but it is quite the bummer. I hope they issue an update soon. Link to comment Share on other sites More sharing options...
Arkadi Posted December 23, 2010 Author Share Posted December 23, 2010 Link to comment Share on other sites More sharing options...
Janne Posted December 23, 2010 Share Posted December 23, 2010 some more info from a helpful chap at VI Basically anything sent to AUX channels is processed by just one core. That means any instrument with multi outs will now be processed by just one core. He also mentioned that it isn't just for multi instruments. He claimed that all aux and all bus are done via one core. I haven't tried the latter out but it is quite the bummer. I hope they issue an update soon. So thats why all of the multiout instruments like Kontakt work much worse than in other hosts. Also I use much bussing as subgroup mixes and I was getting many CPU going bonkers on one single core. I too hope they fix this, but this problem is present in Logic for quite a while and despite many reports was overlooked by the developers. Link to comment Share on other sites More sharing options...
Jordi Torres Posted December 24, 2010 Share Posted December 24, 2010 So thats why all of the multiout instruments like Kontakt work much worse than in other hosts. Link to comment Share on other sites More sharing options...
BadOrange Posted December 24, 2010 Share Posted December 24, 2010 you would need to add a few more instruments as you only have 2 cores and one instrument will only use 1 so you can't really test it out this way. Perhaps do the same test but use another instrument and also don't forget to not highlight an instrument Link to comment Share on other sites More sharing options...
Janne Posted December 24, 2010 Share Posted December 24, 2010 +1 Bad Orange With only one instrument no problems.When a session gets a little crowded things start to go downwards.CPU starts spiking like mad. Also when you have several auxs for submixes. I suspect that memory gets jammed and logic/os x doesnt release the one not used anymore. A restart usually solves the problem.Its a solution but not a very convenient one. Link to comment Share on other sites More sharing options...
Jordi Torres Posted December 24, 2010 Share Posted December 24, 2010 Sounds like you already know the solution to your problems: So thats why all of the multiout instruments like Kontakt work much worse than in other hosts. J. Link to comment Share on other sites More sharing options...
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