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Be ready. I hope someone can help me for all.
1. I wanna find a TOP 5K prime. What should i crunch and how many time this will took with i7 4790 and GTX 1070? I saw PPSE and GFN16 in this forum, is this true?
2. What's the best CPU considered the watt $ charge? And what's the best GPU? Always consider the power/watt ratio. I'm looking for the best hardware but with a reasonable watt absorption.
3. A clean Windows 10 install is good or i need a Windows Enterprise? I mean...Windows 10 have a lot of bloatware that can slown down the crunching process, stealing little pieces of CPU% with useless tasks. Is the Enterprise version better in order to obtain the max crunch power from my PC?
4. Can i run 10 years old hardware like 2.1 GHz Pentium or Xeon 3 GHz dual core/threads? Or i will just throw money into watts bills?
5. I saw that turning off the cache (ask for jobs: set 0) is the best way to speed up the prime finding process. Is that true? Are there others tricks to increase my chances?
6. What about VirtualBox? Can i NOT install it?
Sorry for my bad english and be ready for more questions <3 | |
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 Michael Goetz Volunteer moderator
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1. I wanna find a TOP 5K prime. What should i crunch and how many time this will took with i7 4790 and GTX 1070? I saw PPSE and GFN16 in this forum, is this true?
On a CPU, run PPSE-LLR. If your CPU has hyperthreading, turn it off or set BOINC to use 50% of the CPUs. (Do NOT set BOINC to use 50% of the CPU time. That should be 100%, always.)
On a GPU, run GFN-16.
Depending on your hardware, it should take a month or less of running 24//7 to find your first prime.
EDIT: I didn't notice your hardware when I first read your question. Your hardware is similar but slightly better than mine (i5-4670K and GTX 1060), so the advice and time estimates are valid. This hardware is old, but not THAT old. It will do fine.
2. What's the best CPU considered the watt $ charge? And what's the best GPU? Always consider the power/watt ratio. I'm looking for the best hardware but with a reasonable watt absorption.
I won't answer this one, except to say that question #1 and question #2 are usually going to produce opposite answers. That's because, generally speaking, within a given generation of hardware, as performance goes up, power efficiency goes down. So you can have speed, or power efficiency, but not both. Since in question #1 you're specifically asking about finding primes, speed is very important. You're in a race to return the result before your wingman, since only the first person to return the result gets credit at T5K. "Slow and steady" loses the race here.
3. A clean Windows 10 install is good or i need a Windows Enterprise? I mean...Windows 10 have a lot of bloatware that can slown down the crunching process, stealing little pieces of CPU% with useless tasks. Is the Enterprise version better in order to obtain the max crunch power from my PC?
If you're concerned about overhead, just install Linux.
4. Can i run 10 years old hardware like 2.1 GHz Pentium or Xeon 3 GHz dual core/threads? Or i will just throw money into watts bills?
Yes, you can run old hardware, but compared to modern equipment it's very power hungry (violating question #1) and slow, making it less likely to be credited as finding a prime (violating question #2.) I use old computers for some stuff, but they're at a severe disadvantage when it comes to finding primes.
5. I saw that turning off the cache (ask for jobs: set 0) is the best way to speed up the prime finding process. Is that true? Are there others tricks to increase my chances?
Use ZERO cache. You're in a race against your wingman, and a cache gives him a head start. It's like running a hundred yard dash and, when the starting gun is fired, drinking a can of Red Bull before starting to run. Both are recipes for coming in last.
Sorry for my bad english and be ready for more questions <3
They were excellent questions!
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My lucky number is 75898524288+1 | |
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If your CPU has hyperthreading, turn it off or set BOINC to use 50% of the CPUs. (Do NOT set BOINC to use 50% of the CPU time. That should be 100%, always.)
I don't get it.
Check this example: CPU 4 core with 4 threads vs CPU 4 core with 8 threads.
I set the 4/4 with 100% CPU usage and i set the 4/8 with the 50% CPU usage.
Why i can't run the 2nd at 100%? Is not better? | |
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If your CPU has hyperthreading, turn it off or set BOINC to use 50% of the CPUs. (Do NOT set BOINC to use 50% of the CPU time. That should be 100%, always.)
I don't get it.
Check this example: CPU 4 core with 4 threads vs CPU 4 core with 8 threads.
I set the 4/4 with 100% CPU usage and i set the 4/8 with the 50% CPU usage.
Why i can't run the 2nd at 100%? Is not better?
The extra threads from HT aren't real cores, they just make use of unused resources in a core for more performance.
LLR (the PG app) uses all of the hardware resources of each core, so using the extra hyperthreads cuts performance to below half since everything needs to share and switch back and forth.
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Eating more cheese on Thursdays. | |
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If your CPU has hyperthreading, turn it off or set BOINC to use 50% of the CPUs. (Do NOT set BOINC to use 50% of the CPU time. That should be 100%, always.)
I don't get it.
Check this example: CPU 4 core with 4 threads vs CPU 4 core with 8 threads.
I set the 4/4 with 100% CPU usage and i set the 4/8 with the 50% CPU usage.
Why i can't run the 2nd at 100%? Is not better?
The extra threads from HT aren't real cores, they just make use of unused resources in a core for more performance.
LLR (the PG app) uses all of the hardware resources of each core, so using the extra hyperthreads cuts performance to below half since everything needs to share and switch back and forth.
Clear.
So i've to set this 50% in the boinc software?
Is not managed from primegrid.com => Job Control and Multi-threading => Multi-threading: Max # of threads for each task 1?
I'm a little still confused. | |
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If your CPU has hyperthreading, turn it off or set BOINC to use 50% of the CPUs. (Do NOT set BOINC to use 50% of the CPU time. That should be 100%, always.)
I don't get it.
Check this example: CPU 4 core with 4 threads vs CPU 4 core with 8 threads.
I set the 4/4 with 100% CPU usage and i set the 4/8 with the 50% CPU usage.
Why i can't run the 2nd at 100%? Is not better?
The extra threads from HT aren't real cores, they just make use of unused resources in a core for more performance.
LLR (the PG app) uses all of the hardware resources of each core, so using the extra hyperthreads cuts performance to below half since everything needs to share and switch back and forth.
Clear.
So i've to set this 50% in the boinc software?
Is not managed from primegrid.com => Job Control and Multi-threading => Multi-threading: Max # of threads for each task 1?
I'm a little still confused.
Yes, you need to set this directly in the BOINC software.
Multithreading (from the website) is a different thing that you might want to do, depending on which subproject you're running. It uses multiple cores per task, which allows you to complete prime checks faster, increasing your chance at being first. However, it only has a benefit on the larger-prime PG projects, as the smaller ones don't see nearly as much speedup, but use the same power, decreasing efficiency.
"Were I you," I would use 1 thread for these projects: PPSE, PPS, SGS, allowing 4 tasks to be run at the same time, and 4 threads for the rest. Leave "Max # tasks" at no limit. The "sieve" projects and most of the Genefers don't have multithreading capability, and will ignore that setting.
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Eating more cheese on Thursdays. | |
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Stunning. Thanks for your lovely reply guys. | |
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6. What about VirtualBox? Can i NOT install it?
Yes, PrimeGrid doesn't require virtualbox. Only projects that require it needs vbox to be installed.
Also on the Windows question, if you're using a hyperthreaded CPU, the hyperthreads will do settling the other overhead tasks IF you're not doing anything on that computer except crunching. Or else you might consider linux or Enterprise.
Sorry for my bad english and be ready for more questions <3
It's quite good in my view! Technically English isn't my first language either, but there are lots of English learners here as well!
We'll be happy to answer ur questions :D
Are there others tricks to increase my chances?
You might want to check out
http://www.primegrid.com/forum_thread.php?id=8240
and the first few posts of
http://www.primegrid.com/forum_thread.php?id=9199
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GFN-14: 50103906^16384+1
Proth "SoB": 44243*2^440969+1
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Crun-chiVolunteer tester
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Be ready. I hope someone can help me for all.
1. I wanna find a TOP 5K prime. What should i crunch and how many time this will took with i7 4790 and GTX 1070? I saw PPSE and GFN16 in this forum, is this true?
And dont forget: even you find prime ( and that is hard) you must be first : if you find prime second you are not OWNER of prime, so if you dont have lucky, you can find many primes, always be second, and never "find" prime :)
GTX 1070 can give you prime before CPU: your Intel is not old, but many uses more cores so they finish earlier then you.
Then you have trade-off, to process as many work unit as you can in trade-off to process less but be first.
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92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
314187728^131072+1 GENERALIZED FERMAT
31*332^367560+1 CRUS PRIME
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mikey
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Then you have trade-off, to process as many work unit as you can in trade-off to process less but be first.
To see how you are doing when you click on Your Account in the list to the left scroll down a little bit and you will see the kinds of tasks you have have completed in the last 24 hours and how many you were first on. For example this is what I see right now:
Generalized Cullen/Woodall (LLR) machinename 3 2 66.67
it says I did 3 GCWLLR tasks and of those 2 were first and my first percentage is 66.67%
If you make changes trying to be first more often you can monitor your progress there. Just be aware there are some SERIOUS crunchers here and being first everytime is not an option, but you can increase your odds by doing some of the tweaks others have suggested. | |
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Be ready. I hope someone can help me for all.
1. I wanna find a TOP 5K prime. What should i crunch and how many time this will took with i7 4790 and GTX 1070? I saw PPSE and GFN16 in this forum, is this true?
And dont forget: even you find prime ( and that is hard) you must be first : if you find prime second you are not OWNER of prime, so if you dont have lucky, you can find many primes, always be second, and never "find" prime :)
GTX 1070 can give you prime before CPU: your Intel is not old, but many uses more cores so they finish earlier then you.
Then you have trade-off, to process as many work unit as you can in trade-off to process less but be first.
Yes, for PPSE with i7-4790k you should try multithreading within prefs, use two threads for each task like I'm using with R5 2500U.
____________
SHSID Electronics Group
SHSIDElectronicsGroup@outlook.com
GFN-14: 50103906^16384+1
Proth "SoB": 44243*2^440969+1
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VatoVolunteer tester
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an i7-4790k will do better single-threaded for PPSE if my experience of an i7-4770 is accurate
the only host i've used where multi-threaded was useful for PPSE is an i5-5200u (which only has 3MB L3 cache anyway)
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an i7-4790k will do better single-threaded for PPSE if my experience of an i7-4770 is accurate
the only host i've used where multi-threaded was useful for PPSE is an i5-5200u (which only has 3MB L3 cache anyway)
R5 2500U, in comparison, has 4MB only too. The main difference is that both 4770k and 4790k are overclockable.
YMMV, but try this to be sure:http://www.primegrid.com/forum_thread.php?id=8240
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SHSID Electronics Group
SHSIDElectronicsGroup@outlook.com
GFN-14: 50103906^16384+1
Proth "SoB": 44243*2^440969+1
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