Does CPU matter when crunching with GPU?

Forum to discuss and compare Hardware profiles and Benchmarking
User avatar
Hal Bregg
Boinc Sergeant
Boinc Sergeant
Posts: 175
Joined: Thu Nov 08, 2018 1:22 pm
Location: Cumbria

#1 Does CPU matter when crunching with GPU?

Post 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?
Image
davidbam
General Bitchin'
General Bitchin'
Posts: 6371
Joined: Wed Aug 15, 2018 1:15 pm
Location: Huntly, Scotland
Contact:

#2 Re: Does CPU matter when crunching with GPU?

Post by davidbam »

very much depends on project, I'd say. No real problem on Collatz, but Moo could suffer
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
Image
User avatar
Hal Bregg
Boinc Sergeant
Boinc Sergeant
Posts: 175
Joined: Thu Nov 08, 2018 1:22 pm
Location: Cumbria

#3 Re: Does CPU matter when crunching with GPU?

Post 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.
Image
davidbam
General Bitchin'
General Bitchin'
Posts: 6371
Joined: Wed Aug 15, 2018 1:15 pm
Location: Huntly, Scotland
Contact:

#4 Re: Does CPU matter when crunching with GPU?

Post by davidbam »

moment
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
Image
davidbam
General Bitchin'
General Bitchin'
Posts: 6371
Joined: Wed Aug 15, 2018 1:15 pm
Location: Huntly, Scotland
Contact:

#5 Re: Does CPU matter when crunching with GPU?

Post 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
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
Image
User avatar
Hal Bregg
Boinc Sergeant
Boinc Sergeant
Posts: 175
Joined: Thu Nov 08, 2018 1:22 pm
Location: Cumbria

#6 Re: Does CPU matter when crunching with GPU?

Post by Hal Bregg »

davidBAM wrote: Sat Dec 28, 2019 4:00 pmmoment
:?
:?:
Image
davidbam
General Bitchin'
General Bitchin'
Posts: 6371
Joined: Wed Aug 15, 2018 1:15 pm
Location: Huntly, Scotland
Contact:

#7 Re: Does CPU matter when crunching with GPU?

Post 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 !
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
Image
User avatar
Hal Bregg
Boinc Sergeant
Boinc Sergeant
Posts: 175
Joined: Thu Nov 08, 2018 1:22 pm
Location: Cumbria

#8 Re: Does CPU matter when crunching with GPU?

Post 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.
Image
User avatar
Gibson Praise
Boinc Colour Sergeant
Boinc Colour Sergeant
Posts: 265
Joined: Sat Nov 26, 2016 4:13 am
Location: Haunting Cheyenne Mountain
Contact:

#9 Re: Does CPU matter when crunching with GPU?

Post 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. :(
Image
davidbam
General Bitchin'
General Bitchin'
Posts: 6371
Joined: Wed Aug 15, 2018 1:15 pm
Location: Huntly, Scotland
Contact:

#10 Re: Does CPU matter when crunching with GPU?

Post by davidbam »

they are not computers - headless workstation with wireless LAN is a room heater :D
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
Image
User avatar
Hal Bregg
Boinc Sergeant
Boinc Sergeant
Posts: 175
Joined: Thu Nov 08, 2018 1:22 pm
Location: Cumbria

#11 Re: Does CPU matter when crunching with GPU?

Post 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. :(
:lol:

Like david said earlier above life is never easy.
Image
Post Reply Previous topicNext topic

Return to “Benchmarking and Hardware”