Page 1 of 1
#1 Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 3:44 pm
by Hal Bregg
As in the subject, guys.
I'm testing GTX 660 2GB along with i3-2100 at the moment and was wondering if CPU would be way too weak and bottleneck GPU?
#2 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 3:48 pm
by davidbam
very much depends on project, I'd say. No real problem on Collatz, but Moo could suffer
#3 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 3:57 pm
by Hal Bregg
davidBAM wrote: ↑Sat Dec 28, 2019 3:48 pm
very much depends on project, I'd say. No real problem on Collatz, but Moo could suffer
Right now I am running Collatz and the estimated finish time will be around 1h30min. I didn't optimize the app though.
Speaking of MooWrapper I planned to hit 1 million and focus on other projects, mainly Milkyway and Einstein. If things go well next year I might get something better than this ancient GPU.
#4 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:00 pm
by davidbam
moment
#5 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:04 pm
by davidbam
from
https://boinc.thesonntags.com/collatz/f ... d.php?id=8 for gtx660
verbose=1
kernels_per_reduction=48
threads=8
lut_size=15
sleep=0
cache_sieve=1
reduce_cpu=0
sieve_size=30
#6 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:05 pm
by Hal Bregg
davidBAM wrote: ↑Sat Dec 28, 2019 4:00 pmmoment
#7 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:06 pm
by davidbam
Hal Bregg wrote: ↑Sat Dec 28, 2019 3:57 pm
Right now I am running Collatz and the estimated finish time will be around 1h30min. I didn't optimize the app though.
Speaking of MooWrapper I planned to hit 1 million and focus on other projects, mainly Milkyway and Einstein. If things go well next year I might get something better than this ancient GPU.
nVidia are very good on Collatz, Moo, Primegrid but less so on Milkyway and Einstein where AMD do better. Life is never easy, huh !
#8 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:12 pm
by Hal Bregg
davidBAM wrote: ↑Sat Dec 28, 2019 4:06 pm
Hal Bregg wrote: ↑Sat Dec 28, 2019 3:57 pm
Right now I am running Collatz and the estimated finish time will be around 1h30min. I didn't optimize the app though.
Speaking of MooWrapper I planned to hit 1 million and focus on other projects, mainly Milkyway and Einstein. If things go well next year I might get something better than this ancient GPU.
nVidia are very good on Collatz, Moo, Primegrid but less so on Milkyway and Einstein where AMD do better. Life is never easy, huh !
No, it's not. The only solution is to have another rig with AMD or swapping cards every few weeks.
#9 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:28 pm
by Gibson Praise
Hal Bregg wrote: ↑Sat Dec 28, 2019 4:12 pm
The only solution is to have another rig ..
I'm always in favor of this. My wife .. has other opinions.
#10 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:31 pm
by davidbam
they are not computers - headless workstation with wireless LAN is a room heater
#11 Re: Does CPU matter when crunching with GPU?
Posted: Sat Dec 28, 2019 4:33 pm
by Hal Bregg
Gibson Praise wrote: ↑Sat Dec 28, 2019 4:28 pm
Hal Bregg wrote: ↑Sat Dec 28, 2019 4:12 pm
The only solution is to have another rig ..
I'm always in favor of this. My wife .. has other opinions.
Like david said earlier above life is never easy.