Message boards : Number crunching : CPU underutilization
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Thundergrid Send message Joined: 2 Feb 17 Posts: 4 Credit: 1,126,989 RAC: 0 |
Hi guys, i'm new and while crunching this WU noticed the last 20% was done with only 2 cores working. The thing is, boinc has already assigned the 4 cores to Amicable.. so i have half CPU stalled, still there are 4 other WU waiting in the pipe that can't crunch. Is there a way to force Amicable to use all four cores until 100% is reached?. Regards PD: sorry about my english. Update: the last 10% is using only one core and lasting forever!. |
Coleslaw Send message Joined: 26 Jan 17 Posts: 2 Credit: 63,725,603 RAC: 0 |
You will find that most projects with multi-threaded apps do not fully utilize all of the cores/threads 100% of the work unit. However, it needs to reserve the designated cores/threads for when the work unit needs it. The admin may be able to give you better insight on how his applications utilize them though. |
Sergei Chernykh Project administrator Project developer Send message Joined: 5 Jan 17 Posts: 520 Credit: 72,451,573 RAC: 0 |
Most WUs use 100% CPU most of the time, and only finish threads in the last 10-20 seconds. You were just unlucky with that specific WU. |
Thundergrid Send message Joined: 2 Feb 17 Posts: 4 Credit: 1,126,989 RAC: 0 |
Seems to be the case, i'll search a vudĂș master :D |
Message boards : Number crunching : CPU underutilization
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