1. Are 32 logical or physical cores?
2. Is there a way to choose a node with HT-on or HT-off?
3. Is there a way to choose a node with TB-on or TB-off?
Cheers,
Mous.
HyperThreading and TurboBoost status
ven, 14/05/2010 - 12:23
HyperThreading and TurboBoost status
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ven, 14/05/2010 - 13:15
1. Are 32 logical or physical cores?
There are 32 physical cores
2. Is there a way to choose a node with HT-on or HT-off?
Not at this time, the current config is as follows:
Login node (acano01): has HT-on
Batch nodes: have HT-off
To run on onlythe physical cores on the Login node, is it suggested that you use the taskset command, i.e.
$ taskset c 0-15
See forum entry: Hytherthreading on the MTL for more details.
In the future we may designate some batch nodes as having HT-on, and you can specify to run on that node.
3. Is there a way to choose a node with TB-on or TB-off?
All systems have TB enabled in their BIOS, again we may in the future have batch nodes with TB-off.
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ven, 14/05/2010 - 14:29
THANK YOU for fast reply!
1. Are 32 logical or physical cores?
There are 32 physical
cores
great, now we can try scaling 64 cores!