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Re: Multi-GPU
Posted: Sun Apr 26, 2020 2:12 am
by PantherX
I didn't realize that FahCore_22 was using 2 GBs of RAM. I don't know what is normal since I didn't monitor the RAM usage. On my system, version 0.0.2 is using about 2 GBs on Project 14561.
Re: Multi-GPU
Posted: Sun Apr 26, 2020 2:58 pm
by Joe_H
Amount of RAM used continuously as opposed to during setup will depend on the size of the simulation. Project 14561 will use more, it is over 430k atoms in size.
Re: Multi-GPU
Posted: Sun Apr 26, 2020 4:31 pm
by bruce
Large projects require large amounts of RAM. This machine has 2 GPUs plus a CPU slot and the active projects were recently using enough of my RAM that paging to VRAM was noticeable. (aka Thrashing)
Unfortunately it's impoossible to predict the sum of all memory demands based on the software's knowledge of the demands of ONE active program. The FAH assignment logic can be configureds to that certain projects are only assigned if the RAM in the machine requesting an assigment is at least X KB Unfortunately that logic is only useful if you're running a single slot.