CPU underutilization

Author	Message
Thundergrid Send message Joined: 2 Feb 17 Posts: 4 Credit: 1,126,989 RAC: 0	Message 74 - Posted: 2 Feb 2017, 23:32:47 UTC Last modified: 2 Feb 2017, 23:33:15 UTC 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!. ID: 74 · Rating: 0 · rate: / Reply Quote

Coleslaw Send message Joined: 26 Jan 17 Posts: 2 Credit: 63,711,930 RAC: 2,784	Message 75 - Posted: 3 Feb 2017, 2:43:29 UTC - in response to Message 74. 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. ID: 75 · Rating: 0 · rate: / Reply Quote

Sergei Chernykh Project administrator Project developer Send message Joined: 5 Jan 17 Posts: 513 Credit: 72,451,573 RAC: 0	Message 76 - Posted: 3 Feb 2017, 5:43:15 UTC - in response to Message 74. 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. ID: 76 · Rating: 0 · rate: / Reply Quote

Thundergrid Send message Joined: 2 Feb 17 Posts: 4 Credit: 1,126,989 RAC: 0	Message 88 - Posted: 6 Feb 2017, 13:25:04 UTC - in response to Message 76. Seems to be the case, i'll search a vudú master :D ID: 88 · Rating: 0 · rate: / Reply Quote