PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Problems and Help : Multithreading / Hyperthreading?

Author Message
PC10K
Avatar
Send message
Joined: 17 Nov 14
Posts: 12
ID: 373512
Credit: 10,833,481
RAC: 13,028
Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,072,069)PPS LLR Ruby: Earned 2,000,000 credits (2,075,147)SGS LLR Silver: Earned 100,000 credits (370,757)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,011,189)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,004,261)PPS Sieve Ruby: Earned 2,000,000 credits (2,005,745)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (102,609)TRP Sieve (suspended) Silver: Earned 100,000 credits (106,686)AP 26/27 Silver: Earned 100,000 credits (181,935)GFN Amethyst: Earned 1,000,000 credits (1,903,084)
Message 117489 - Posted: 25 Apr 2018 | 2:03:57 UTC

So I got a new laptop and I'm back to crunching, and I have a few questions:

1. Is it worth multithreading/hyperthreading tasks? I have an Intel i7-8550U (4 cores 8 threads) doing SGS.

2. How would I set up the app_config.xml file? Should I set it up like this?

<app_config> <app_version> <app_name>llrSGS</app_name> <cmdline>-t 4</cmdline> <avg_ncpus>1</avg_ncpus> </app_version> </app_config>


3. If I do this, what should I set my CPU/Processor time to?

Thanks a lot in advance!

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13620
ID: 53948
Credit: 266,694,965
RAC: 299,703
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (3,227,651)Cullen LLR Ruby: Earned 2,000,000 credits (3,624,591)ESP LLR Turquoise: Earned 5,000,000 credits (5,021,269)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,963,361)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)WW Sapphire: Earned 20,000,000 credits (23,144,000)GFN Emerald: Earned 50,000,000 credits (77,916,132)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 117491 - Posted: 25 Apr 2018 | 4:17:41 UTC - in response to Message 117489.

So I got a new laptop and I'm back to crunching, and I have a few questions:

1. Is it worth multithreading/hyperthreading tasks? I have an Intel i7-8550U (4 cores 8 threads) doing SGS.

2. How would I set up the app_config.xml file? Should I set it up like this?
<app_config> <app_version> <app_name>llrSGS</app_name> <cmdline>-t 4</cmdline> <avg_ncpus>1</avg_ncpus> </app_version> </app_config>


3. If I do this, what should I set my CPU/Processor time to?

Thanks a lot in advance!


For LLR, turn off hyperthreading by setting number of CPUs to 50% in the BOINC preferences.
(The setting on the next line, "Use at most NNN % of CPU time" should always be set to 100.)

Do not use multi-threading for SGS. No app_config.xml file is needed.


____________
My lucky number is 75898524288+1

PC10K
Avatar
Send message
Joined: 17 Nov 14
Posts: 12
ID: 373512
Credit: 10,833,481
RAC: 13,028
Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,072,069)PPS LLR Ruby: Earned 2,000,000 credits (2,075,147)SGS LLR Silver: Earned 100,000 credits (370,757)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,011,189)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,004,261)PPS Sieve Ruby: Earned 2,000,000 credits (2,005,745)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (102,609)TRP Sieve (suspended) Silver: Earned 100,000 credits (106,686)AP 26/27 Silver: Earned 100,000 credits (181,935)GFN Amethyst: Earned 1,000,000 credits (1,903,084)
Message 117494 - Posted: 25 Apr 2018 | 5:36:56 UTC - in response to Message 117491.

Gotcha, thanks!

Message boards : Problems and Help : Multithreading / Hyperthreading?

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2021 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 5.81, 5.85, 5.41
Generated 18 Apr 2021 | 9:33:06 UTC