Hello, a processor with 2 x 2.66 Ghz Quad Core Intel Xeon, 8 Gb 1066 Mhz DDR3 ECC, in OS X 10.8.5
How many Threads to use for encoding on this host?
What should I select preferences in general?
thank you very much
Number of threads
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carl
- Site Admin
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- Joined: Thu Nov 14, 2013 2:53 pm
Re: Number of threads
Hi there,
Generally it should be set to the number of cores on your CPU. If I understand you right you have 2 quad-cores, so I would use 8 threads. DCP-o-matic should work that out for you and fill in the correct value...
Generally it should be set to the number of cores on your CPU. If I understand you right you have 2 quad-cores, so I would use 8 threads. DCP-o-matic should work that out for you and fill in the correct value...
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sguttag
- Posts: 5
- Joined: Thu Dec 26, 2013 9:51 pm
Re: Number of threads
I hope this isn't a double post but I didn't see it show up after submitting...
I'm trying to figure out how many threads to set on the host computer. It is a quad-core i7 but I have a dual-core iMac on the network. Do I set the thread count to 6 (total number of threads...4 on the i7 and 2 on the iMac) or to 4 (just the count of the i7)?
You mentioned that DCP-O-Matic should set the thread count for me...when I opened up the preferences tab...it was on 8...which seems rather high as that was before I connected the iMac up as a server.
Can one change the thread count mid conversion? If not, can one stop...set it, and then restart from where they were?
I'm trying to figure out how many threads to set on the host computer. It is a quad-core i7 but I have a dual-core iMac on the network. Do I set the thread count to 6 (total number of threads...4 on the i7 and 2 on the iMac) or to 4 (just the count of the i7)?
You mentioned that DCP-O-Matic should set the thread count for me...when I opened up the preferences tab...it was on 8...which seems rather high as that was before I connected the iMac up as a server.
Can one change the thread count mid conversion? If not, can one stop...set it, and then restart from where they were?
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carl
- Site Admin
- Posts: 2387
- Joined: Thu Nov 14, 2013 2:53 pm
Re: Number of threads
Yes, sorry about that, the settings on this forum software are rather sensitive and require me to approve posts by new-ish users.I hope this isn't a double post but I didn't see it show up after submitting...
Just the count of the i7. The network "servers" communicate their own thread counts to the master.I'm trying to figure out how many threads to set on the host computer. It is a quad-core i7 but I have a dual-core iMac on the network. Do I set the thread count to 6 (total number of threads...4 on the i7 and 2 on the iMac) or to 4 (just the count of the i7)?
I suspect this would be due to the i7's hyperthreading (making it announce to the operating system that it has 8 effective cores)You mentioned that DCP-O-Matic should set the thread count for me...when I opened up the preferences tab...it was on 8...which seems rather high as that was before I connected the iMac up as a server.
Changes would be ignored until you start a new conversion. If you stop and re-start, DCP-o-matic will start from where you left off (after a bit of time for it to work out what is going on).Can one change the thread count mid conversion? If not, can one stop...set it, and then restart from where they were?
Best,
Carl