Posts by HydroLAB > Sph3re

1) Message boards : Number crunching : Error While Computing + Several WU's on the VM (Message 2347)
Posted 24 May 2015 by Profile HydroLAB > Sph3re
Hi Phil ;o)

On those days with this config :

Oracle VM VirtualBox Manager 4.3.28
BOINC Manager version 7.4.42

i have noticed that High GPU apps + All core used cause some problems
( Freeze or Kernel Crash )

I survey for a while ATLAS tasks in a software of Ram analysis

I had to keep 1,5 GO of ram free for system Kernel_task and others

Each ATLAS_task were taking 2,10 Go of RAM

So With a 16 Go Ram Computer 4 Cores 8 Threads :

i put this settings #1 ( Secure Settings ) :

USE 75 % of processors
USE 85 % of CPU Time
1 Collatz Conjecture GPU_Task

The result is :

6 ATLAS_Task calculating at same time
1 Collatz GPU
The Free RAM has the purpose to cover kernel_task and other system stuf.

And all worked well for 3 days without any crash
With several restarts.


With this other settings #2 :



USE 88 % of processors ( 7 Threads )
USE 85 % of CPU Time
1 Collatz Conjecture GPU_Task

its very close to the Limit ( Too Close ? ) on my config


The 3rd Solution i Tested is : Making a App Couple
Like 6 ATLAS + 2 Einstein


USE 100 % of processors ( 8 Threads )
USE 75 % of CPU Time
1 Collatz Conjecture GPU_Task

Its close to the limit too
But i tested it with just a browser open
and it worked well


I will TEST again the configs #2 and #3

and post the results


C U my friend.


°O°