[ettore]

Hi,
I have recently start using a 4P machine and for my surprise i came across a limitation (or a fault of mine in simulation build up). Although the machine has 64 cores and 128 GB of ram (4 memory channels per CPU, total of 16 that i was planning to use) i cannot spawn the simulation on more than 30 nodes. Anything above 30 nodes just ends up in a faulty cpu affinity set that messes up the simulation calculation time. While settingup 30 nodes the calculation runs as expexted (i had some benchmarks done in order to see the diffrence between various hardware).
Should it be a fault of mine an can anybody help me find out what is it that i am doing wrong?
I have researched the Fluent limitations but i couldn't find anything.
Should that be the max limit of nodes per machine are there any possibilities on manually picking the nodes? The ideea is to spawn the calculation on every CPU in order to profit of all 16 memory channels.
I should also mention that the OS is a Windows (that can see and use the 4P, 128 GB hardware). Other programs use / benefit of the complete hardware.
The simulation that i'm doing is an air flow in a closed chamber. Number of cells is about 21 mil.

I am very thankfull for any answeres and opinions.