log in |
Message boards : Number crunching : CPU cache and FFT size.
Author | Message |
---|---|
Hi, coming from Primegrid, I know that to get optimal performances from LLR workload, the goal is to maximize the number of task and thus reducing the core count for each task while not exceeding the CPU's cache memory. This can be calculated using the FFT size. | |
ID: 10204 · Rating: 0 · rate: / Reply Quote | |
Hi, coming from Primegrid, I know that to get optimal performances from LLR workload, the goal is to maximize the number of task and thus reducing the core count for each task while not exceeding the CPU's cache memory. This can be calculated using the FFT size. For smaller WUs (used by new bases from 1-2.5k with pfgw) you can use with HT but its better to use multicore. llr, pfgw and prst using the same gwnum library. | |
ID: 10205 · Rating: 0 · rate: / Reply Quote | |
Right now my main CPUs are Ryzen 7 6800H (8c/16t 16MbL3), Ryzen 7 4800H (8c/16t 8MbL3), i7 6700 (4c/8t 8MbL3) and i3 7100t(2c/4t 3MbL3) I've set up Boinc to use only 50% of the cores/threads because I can't disable HT on all motherboards and other usages benefits from HT. So right now, every CPU runs an amount of simultaneous tasks corresponding to their amount of cores (1 task per physical core). | |
ID: 10206 · Rating: 0 · rate: / Reply Quote | |
My Ryzen is also running with HT. With 50% its the correct way to not disable HT. | |
ID: 10207 · Rating: 0 · rate: / Reply Quote | |
Thanks for the quick answers, so I'll just let it be that way. | |
ID: 10208 · Rating: 0 · rate: / Reply Quote | |
Message boards :
Number crunching :
CPU cache and FFT size.