mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware

Reply
 
Thread Tools
Old 2022-01-09, 06:04   #1
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

2×19×59 Posts
Default Mini PC's

Just came across this for the 1st time. Seems to be good for Number-Crunching farms. Can rack up 16 cores for less than $1k.

I know Celeron is not particularly fast, but still 4 cores,

https://www.amazon.ca/AWOW-AK34-Comp...977050908&th=1

Any better (new) alternatives?

Last fiddled with by a1call on 2022-01-09 at 06:11
a1call is offline   Reply With Quote
Old 2022-01-09, 06:22   #2
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

24·7·37 Posts
Default

Quote:
Originally Posted by a1call View Post
Just came across this for the 1st time. Seems to be good for Number-Crunching farms. Can rack up 16 cores for less than $1k.

I know Celeron is not particularly fast, but still 4 cores,

https://www.amazon.ca/AWOW-AK34-Comp...977050908&th=1

Any better (new) alternatives?
Not a wise choice for crunching large numbers. During heavy use heat dissipation would be a problem. The Celeron does not have AVX/AVX2.

Last fiddled with by paulunderwood on 2022-01-09 at 06:30
paulunderwood is online now   Reply With Quote
Old 2022-01-09, 06:37   #3
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

224210 Posts
Default

I have tried running Raspberry Pi's remotely in the freezer. It crashed occasionally but not always. I am tended to think it would have crashed regardless of where it was.
Would be willing to test one of these if I get a chance. Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?
a1call is offline   Reply With Quote
Old 2022-01-09, 06:41   #4
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

24×7×37 Posts
Default

Quote:
Originally Posted by a1call View Post
I have tried running Raspberry Pi's remotely in the freezer. It crashed occasionally but not always. I am tended to think it would have crashed regardless of where it was.
Would be willing to test one of these if I get a chance. Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?
AVX2 is 2x faster (?). If you are looking for a bargain, a cheap system built around this 9400f chip would be okay.
paulunderwood is online now   Reply With Quote
Old 2022-01-09, 06:46   #5
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

2×19×59 Posts
Default

Quote:
Originally Posted by paulunderwood View Post
AVX2 is 2x faster (?). If you are looking for a bargain, a cheap system built around this 9400f chip would be okay.
That's a good price. Thanks, will look for a ready made minimal setup for that processor. The last (only) system I put together myself costed $2k, CPU not included.
a1call is offline   Reply With Quote
Old 2022-01-09, 06:53   #6
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

414410 Posts
Default

This 10400f is even cheaper -- will need a cheap GPU or run it headless. When building make sure you get a compatible motherboard.
paulunderwood is online now   Reply With Quote
Old 2022-01-09, 06:58   #7
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

2×19×59 Posts
Default

Quote:
Originally Posted by paulunderwood View Post
This 10400f is even cheaper -- will need a cheap GPU or run it headless. When building make sure you get a compatible motherboard.
Thank you very much for your expertise, sir. Will see if I can get a budget system configured, using the Newegg configurator.
a1call is offline   Reply With Quote
Old 2022-01-09, 07:06   #8
kriesel
 
kriesel's Avatar
 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

3·2,161 Posts
Default

Quote:
Originally Posted by a1call View Post
Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?
If running mprime / prime95, maximum fft length, and thereby maximum exponent, varies by available instruction set. SSE2 can go to ~595M exponent, so would not affect wavefront or 100Mdigit. https://www.mersenneforum.org/showpo...74&postcount=8
Mlucas would not be so restricted.
Performance would be affected.

Last fiddled with by kriesel on 2022-01-09 at 07:07
kriesel is offline   Reply With Quote
Old 2022-01-09, 07:26   #9
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

2·19·59 Posts
Default

I know most people are interested in Prime95 & GIMPS. But personally I only use Pari-gp and PFGW. Even at 1/2 speed, if the price is way less than 1/2 of an equivalent PC, it might be interesting to me. Alas I have no disposable time for any of that right now. Retirement now, Retirement now.

a1call is offline   Reply With Quote
Old 2022-01-09, 08:30   #10
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
"name field"
Jun 2011
Thailand

233538 Posts
Default

Any way you do, if you have access to cheap electricity, you will get A LOT better with second hand xeons, people discarded wagons of them after spectre-related bugs came to light (practically, you could get them for free, or even get paid to get them), and clever Chinese entrepreneurs made special (new) mobos for them, just to sell them, and the memories they had stocks. So, you can get a very cheap system with a lot of cores and a lot of processing power, I mean A LOT, of which only the CPU and the memories are second hand, everything else is brand new, including the mobo, ssd, etc. The downside is the fact that the business is a bit risky, you won't get any warranty in the most of the cases, and the system itself, even if everything works perfect, it will be quite power hungry.

I posted links in the past (I think, in Xyzzy's hardware thread). Just go to aliespress and search for "x79 combo", or "x99 combo", or just "motherboard set", sort them by price, descending, and stop where your budget limit is...

Last fiddled with by LaurV on 2022-01-09 at 08:34
LaurV is offline   Reply With Quote
Old 2022-01-09, 08:49   #11
a1call
 
a1call's Avatar
 
"Rashid Naimi"
Oct 2015
Remote to Here/There

1000110000102 Posts
Default

Interesting, will check that out. Thanks.
a1call is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mini ITX with LGA 2011 (4 memory channels) bgbeuning Hardware 7 2016-06-18 10:32
Mini ITX in server case bgbeuning Hardware 8 2016-05-11 14:13
Mini STX bgbeuning Hardware 1 2016-04-20 13:35
What can I fit in mini-ITX and a 120W PSU fivemack Hardware 2 2016-01-01 17:50
Mini-Projects MrHappy Data 56 2012-09-06 02:48

All times are UTC. The time now is 00:11.


Wed May 25 00:11:36 UTC 2022 up 40 days, 22:12, 0 users, load averages: 2.12, 2.13, 2.05

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔