Multi threaded WU's wasting CPU capacity due to not synchronized completion?!

Message boards : Bug tracker : Multi threaded WU's wasting CPU capacity due to not synchronized completion?!

To post messages, you must log in.

AuthorMessage
laseflex

Send message
Joined: 15 Mar 21
Posts: 4
Credit: 338,172,825
RAC: 819,539
    
Message 1511 - Posted: 26 Apr 2021, 15:29:59 UTC

Hello,

I am often observing WU's using less than 20% of my CPU Cores for the last !hours. All cores remain blocked until the WU finishes. This is very annoying. Could you not rather stop handing out multi threaded WU's in favour of many single threaded ones? This is very annoying. (example: amicable_10_21_7931_1619190902.985930_400_0)

Best Regards
ID: 1511 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
laseflex

Send message
Joined: 15 Mar 21
Posts: 4
Credit: 338,172,825
RAC: 819,539
    
Message 1513 - Posted: 27 Apr 2021, 19:48:56 UTC

Hello again,

I have found a simple solution for my problem: there is a <<Max # CPUs>> setting in the Amicable Numbers preferences. Setting this to a low value like 2 solves the problem for me.
Nevertheless the bad thread synchronization for high thread count WUs should be improved.

Kind Regards
ID: 1513 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote

Message boards : Bug tracker : Multi threaded WU's wasting CPU capacity due to not synchronized completion?!


©2022 Sergei Chernykh