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Message boards : General discussion : Why does PrimeGrid make my computer work so hard?

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numbermaniac
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321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88073 - Posted: 15 Sep 2015 | 6:40:29 UTC

Three tasks from World Community Grid can run in the background in near silence, but one PrimeGrid task makes my computer create a lot of noise, like the cpu is going into overdrive or something. Why is that?

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Discovered 4 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 5 primes in the 2019 Tour de PrimesFound 6 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,774,878)Cullen LLR Turquoise: Earned 5,000,000 credits (5,903,451)ESP LLR Turquoise: Earned 5,000,000 credits (6,454,573)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,122,074)PPS LLR Emerald: Earned 50,000,000 credits (83,377,417)PSP LLR Jade: Earned 10,000,000 credits (15,223,714)SoB LLR Jade: Earned 10,000,000 credits (17,319,914)SR5 LLR Sapphire: Earned 20,000,000 credits (23,996,561)SGS LLR Turquoise: Earned 5,000,000 credits (7,342,780)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Jade: Earned 10,000,000 credits (19,866,589)Woodall LLR Turquoise: Earned 5,000,000 credits (8,171,820)321 Sieve Sapphire: Earned 20,000,000 credits (20,236,219)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,626,419)PPS Sieve Emerald: Earned 50,000,000 credits (76,969,144)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Sapphire: Earned 20,000,000 credits (21,918,894)GFN Emerald: Earned 50,000,000 credits (76,466,089)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 88076 - Posted: 15 Sep 2015 | 7:47:59 UTC - in response to Message 88073.

It depends on which task. Generally speaking, the LLR tasks are highly optimised and will push CPU cores very hard. You get the maximum work out in minimum time, but it does mean it can run hotter than less demanding tasks.

If you do the sieve tasks, they are less demanding so less likely to cause so much heat.

You can select which subprojects you do in user preferences. It looks like you currently allow any sub-project to run. Also judging from the hardware spec, you're running a laptop?

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Found 5 primes in the 2021 Tour de PrimesFound 5 mega primes in the 2021 Tour de PrimesThe "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 6 mega primesFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)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 Jade: Earned 10,000,000 credits (16,008,485)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,291,181)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,252,256)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,911,985)321 Sieve 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)GFN Emerald: Earned 50,000,000 credits (76,733,355)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 88081 - Posted: 15 Sep 2015 | 12:14:58 UTC - in response to Message 88073.

Three tasks from World Community Grid can run in the background in near silence, but one PrimeGrid task makes my computer create a lot of noise, like the cpu is going into overdrive or something. Why is that?


Because our apps are so incredibly awesome.

Seriously, though, all kidding aside... it's literally because our apps are so incredibly awesome.

The people who wrote the two main software programs that we use on the CPU -- LLR and Genefer -- wrote them to make use of what's called the SIMD instructions ("Single Instruction, Multiple Data") which execute multiple multiplications simultaneously. Most programs don't use those instructions. This makes the programs much faster, and as a side effect use more electrical power. More power means more heat, and more means the fans spin faster, and faster spinning fans mean more decibels.

The GPU apps are also very efficient. Writing programs for GPUs is very tricky, and it's hard to do it well. Unlike normal programs, where a series of computer instructions is executed in sequence, the feature that makes GPUs so powerful is that they have not one computer, but hundreds or even thousands of computer cores inside. Making a program work on a GPU involves breaking the problem up into little chunks that can be computed simultaneously. That's notoriously difficult to do, and some computing problems lend themselves to parallelization better than others. The GPU programs that we have were not only written by superbly skilled programmers, but were also written for problems that lend themselves well to being run in parallel.

Inefficient GPU programs use a lower average percentage of the GPU cores (and consequently less power). Efficient GPU programs (and ours are very efficient) use a much higher average percentage of the GPU cores, and thus use more power. As with CPU programs, more power means more heat and faster fan speeds and more noise.

The sound you hear is the sound of math happening. :)
____________
My lucky number is 75898524288+1

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321 LLR Turquoise: Earned 5,000,000 credits (8,236,942)Cullen LLR Turquoise: Earned 5,000,000 credits (8,028,695)ESP LLR Turquoise: Earned 5,000,000 credits (8,027,771)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (7,259,087)PPS LLR Turquoise: Earned 5,000,000 credits (7,722,618)PSP LLR Turquoise: Earned 5,000,000 credits (7,137,796)SoB LLR Turquoise: Earned 5,000,000 credits (6,941,728)SR5 LLR Turquoise: Earned 5,000,000 credits (7,186,115)SGS LLR Turquoise: Earned 5,000,000 credits (7,263,666)TRP LLR Turquoise: Earned 5,000,000 credits (8,751,781)Woodall LLR Turquoise: Earned 5,000,000 credits (7,119,125)321 Sieve Jade: Earned 10,000,000 credits (10,033,828)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,037,204)PPS Sieve Jade: Earned 10,000,000 credits (10,305,147)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Jade: Earned 10,000,000 credits (12,282,634)GFN Sapphire: Earned 20,000,000 credits (29,911,497)PSA Double Bronze: Earned 100,000,000 credits (170,761,999)
Message 88087 - Posted: 15 Sep 2015 | 12:59:46 UTC - in response to Message 88073.

Three tasks from World Community Grid can run in the background in near silence, but one PrimeGrid task makes my computer create a lot of noise, like the cpu is going into overdrive or something. Why is that?

Are you running the GPU app? If so, that's why your notebook is running so loud. Mine shows a similar pattern: crunching 2x WCG or 2x Primegrid on the CPU only get's a around the same temps, a little bit higher on the Prime side. But, as soon as I turn the GPU app, oh boy, temps go crazy. Even if it's JUST the GPU, the thing throttles. Both CPU and GPU (I believe the heatsink is shared?) go over the 80s with it.

So try not using the GPU app. It should help you keep temps and noise under control.

numbermaniac
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Joined: 28 Mar 14
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321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88159 - Posted: 16 Sep 2015 | 8:29:43 UTC - in response to Message 88076.

It depends on which task. Generally speaking, the LLR tasks are highly optimised and will push CPU cores very hard. You get the maximum work out in minimum time, but it does mean it can run hotter than less demanding tasks.

If you do the sieve tasks, they are less demanding so less likely to cause so much heat.

You can select which subprojects you do in user preferences. It looks like you currently allow any sub-project to run. Also judging from the hardware spec, you're running a laptop?


I'm pretty sure I've set it to only certain subprojects. And yes, it's a laptop.

numbermaniac
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Joined: 28 Mar 14
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321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88160 - Posted: 16 Sep 2015 | 8:32:32 UTC - in response to Message 88081.

Three tasks from World Community Grid can run in the background in near silence, but one PrimeGrid task makes my computer create a lot of noise, like the cpu is going into overdrive or something. Why is that?


Because our apps are so incredibly awesome.

Seriously, though, all kidding aside... it's literally because our apps are so incredibly awesome.

The people who wrote the two main software programs that we use on the CPU -- LLR and Genefer -- wrote them to make use of what's called the SIMD instructions ("Single Instruction, Multiple Data") which execute multiple multiplications simultaneously. Most programs don't use those instructions. This makes the programs much faster, and as a side effect use more electrical power. More power means more heat, and more means the fans spin faster, and faster spinning fans mean more decibels.

The GPU apps are also very efficient. Writing programs for GPUs is very tricky, and it's hard to do it well. Unlike normal programs, where a series of computer instructions is executed in sequence, the feature that makes GPUs so powerful is that they have not one computer, but hundreds or even thousands of computer cores inside. Making a program work on a GPU involves breaking the problem up into little chunks that can be computed simultaneously. That's notoriously difficult to do, and some computing problems lend themselves to parallelization better than others. The GPU programs that we have were not only written by superbly skilled programmers, but were also written for problems that lend themselves well to being run in parallel.

Inefficient GPU programs use a lower average percentage of the GPU cores (and consequently less power). Efficient GPU programs (and ours are very efficient) use a much higher average percentage of the GPU cores, and thus use more power. As with CPU programs, more power means more heat and faster fan speeds and more noise.

The sound you hear is the sound of math happening. :)


lol the beginning of that post

Ah, thank you. This explains a lot :)

(on a side note, is this why my GPU may have been damaged by PrimeGrid?)

numbermaniac
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Joined: 28 Mar 14
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321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88162 - Posted: 16 Sep 2015 | 8:33:20 UTC - in response to Message 88087.

Three tasks from World Community Grid can run in the background in near silence, but one PrimeGrid task makes my computer create a lot of noise, like the cpu is going into overdrive or something. Why is that?

Are you running the GPU app? If so, that's why your notebook is running so loud. Mine shows a similar pattern: crunching 2x WCG or 2x Primegrid on the CPU only get's a around the same temps, a little bit higher on the Prime side. But, as soon as I turn the GPU app, oh boy, temps go crazy. Even if it's JUST the GPU, the thing throttles. Both CPU and GPU (I believe the heatsink is shared?) go over the 80s with it.

So try not using the GPU app. It should help you keep temps and noise under control.


Only the CPU app, not the GPU. I'm not sure about the temperature but the noise told me it was working pretty hard.

Profile Michael GoetzProject donor
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Found 5 primes in the 2021 Tour de PrimesFound 5 mega primes in the 2021 Tour de PrimesThe "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 6 mega primesFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)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 Jade: Earned 10,000,000 credits (16,008,485)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,291,181)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,252,256)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,911,985)321 Sieve 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)GFN Emerald: Earned 50,000,000 credits (76,733,355)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 88166 - Posted: 16 Sep 2015 | 10:11:38 UTC - in response to Message 88160.

(on a side note, is this why my GPU may have been damaged by PrimeGrid?)


Possibly. Laptops aren't really designed to run continuously at full power. Even so called gaming laptops don't run all-out 24/7 in normal usage.

If you do crunch on a laptop (I don't recommend it), you should use external cooling solutions. They sell "cooling pads" -- laptop stands that angle the laptop towards you (better ergonomics for your wrists) with fans blowing air onto the bottom of the laptop to provide additional cooling. Or just use a desk fan to blow air across the whole thing.

Always run the laptop while it's wide open. Even though it's possible to set it up so it will crunch when the cover is closed, that reduces the convective surface area of the laptop by half and makes the heat problem even worse.
____________
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321 LLR Turquoise: Earned 5,000,000 credits (8,236,942)Cullen LLR Turquoise: Earned 5,000,000 credits (8,028,695)ESP LLR Turquoise: Earned 5,000,000 credits (8,027,771)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (7,259,087)PPS LLR Turquoise: Earned 5,000,000 credits (7,722,618)PSP LLR Turquoise: Earned 5,000,000 credits (7,137,796)SoB LLR Turquoise: Earned 5,000,000 credits (6,941,728)SR5 LLR Turquoise: Earned 5,000,000 credits (7,186,115)SGS LLR Turquoise: Earned 5,000,000 credits (7,263,666)TRP LLR Turquoise: Earned 5,000,000 credits (8,751,781)Woodall LLR Turquoise: Earned 5,000,000 credits (7,119,125)321 Sieve Jade: Earned 10,000,000 credits (10,033,828)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,037,204)PPS Sieve Jade: Earned 10,000,000 credits (10,305,147)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Jade: Earned 10,000,000 credits (12,282,634)GFN Sapphire: Earned 20,000,000 credits (29,911,497)PSA Double Bronze: Earned 100,000,000 credits (170,761,999)
Message 88167 - Posted: 16 Sep 2015 | 10:15:33 UTC - in response to Message 88166.

(on a side note, is this why my GPU may have been damaged by PrimeGrid?)


Possibly. Laptops aren't really designed to run continuously at full power. Even so called gaming laptops don't run all-out 24/7 in normal usage.

If you do crunch on a laptop (I don't recommend it), you should use external cooling solutions. They sell "cooling pads" -- laptop stands that angle the laptop towards you (better ergonomics for your wrists) with fans blowing air onto the bottom of the laptop to provide additional cooling. Or just use a desk fan to blow air across the whole thing.

Always run the laptop while it's wide open. Even though it's possible to set it up so it will crunch when the cover is closed, that reduces the convective surface area of the laptop by half and makes the heat problem even worse.

And remember, TThrottle was designed with Boinc in mind, so make sure to use it!

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Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,698,294)Cullen LLR Turquoise: Earned 5,000,000 credits (6,655,866)ESP LLR Turquoise: Earned 5,000,000 credits (8,198,062)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,817,032)PPS LLR Jade: Earned 10,000,000 credits (10,016,096)PSP LLR Jade: Earned 10,000,000 credits (10,891,779)SoB LLR Jade: Earned 10,000,000 credits (11,111,741)SR5 LLR Turquoise: Earned 5,000,000 credits (7,278,494)SGS LLR Turquoise: Earned 5,000,000 credits (7,457,856)TRP LLR Turquoise: Earned 5,000,000 credits (7,714,186)Woodall LLR Turquoise: Earned 5,000,000 credits (5,726,778)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,094,130)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (11,628,594)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,040,865,445)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,235,150)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,376,844)AP 26/27 Jade: Earned 10,000,000 credits (11,615,539)GFN Double Silver: Earned 200,000,000 credits (427,593,017)PSA Double Bronze: Earned 100,000,000 credits (125,462,363)
Message 88168 - Posted: 16 Sep 2015 | 10:33:22 UTC


And remember, TThrottle was designed with Boinc in mind, so make sure to use it!


I highly recommend TThrottle as well.
http://efmer.com/b/?q=tthrottle



____________
Largest Primes to Date:
As Double Checker: SR5 109208*5^1816285+1 Dgts-1,269,534
As Initial Finder: SR5 243944*5^1258576-1 Dgts-879,713


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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,038,739)Cullen LLR Ruby: Earned 2,000,000 credits (2,074,615)ESP LLR Ruby: Earned 2,000,000 credits (2,013,823)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,142,353)PPS LLR Turquoise: Earned 5,000,000 credits (5,225,319)PSP LLR Ruby: Earned 2,000,000 credits (2,049,284)SoB LLR Ruby: Earned 2,000,000 credits (2,700,268)SR5 LLR Ruby: Earned 2,000,000 credits (2,053,250)SGS LLR Turquoise: Earned 5,000,000 credits (5,147,768)TRP LLR Ruby: Earned 2,000,000 credits (2,025,737)Woodall LLR Ruby: Earned 2,000,000 credits (2,014,811)321 Sieve Sapphire: Earned 20,000,000 credits (23,770,672)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (944,431)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,813,253)PPS Sieve Double Silver: Earned 200,000,000 credits (339,665,412)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,446,797)AP 26/27 Sapphire: Earned 20,000,000 credits (33,140,471)GFN Sapphire: Earned 20,000,000 credits (41,983,025)PSA Sapphire: Earned 20,000,000 credits (20,457,430)
Message 88169 - Posted: 16 Sep 2015 | 10:35:44 UTC - in response to Message 88159.

And yes, it's a laptop.


I run Boinc on my i7 laptop but have it set to only use 50% of the cpu, so it only runs on 4 threads instead of the 8 possible threads. Along with a cooling fan underneath the laptop and a GOOD backup system I haven't had any problems. In the past I HAVE had harddrives in laptops die on me due to overheating or over use, laptop components are not really designed to be used like desktops, although newer ones are getting better.

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Credit: 6,612,340
RAC: 0
321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88194 - Posted: 17 Sep 2015 | 7:02:03 UTC - in response to Message 88166.

(on a side note, is this why my GPU may have been damaged by PrimeGrid?)


Possibly. Laptops aren't really designed to run continuously at full power. Even so called gaming laptops don't run all-out 24/7 in normal usage.

If you do crunch on a laptop (I don't recommend it), you should use external cooling solutions. They sell "cooling pads" -- laptop stands that angle the laptop towards you (better ergonomics for your wrists) with fans blowing air onto the bottom of the laptop to provide additional cooling. Or just use a desk fan to blow air across the whole thing.

Always run the laptop while it's wide open. Even though it's possible to set it up so it will crunch when the cover is closed, that reduces the convective surface area of the laptop by half and makes the heat problem even worse.

I don't even run it 24/7, surprisingly enough. Thanks for the advice, I shall do this.

numbermaniac
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Posts: 180
ID: 305955
Credit: 6,612,340
RAC: 0
321 LLR Silver: Earned 100,000 credits (119,884)PPS LLR Amethyst: Earned 1,000,000 credits (1,054,944)SR5 LLR Gold: Earned 500,000 credits (508,863)SGS LLR Gold: Earned 500,000 credits (949,703)TRP LLR Gold: Earned 500,000 credits (502,390)321 Sieve Gold: Earned 500,000 credits (512,303)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (503,510)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (161,720)GFN Gold: Earned 500,000 credits (500,739)PSA Silver: Earned 100,000 credits (141,661)
Message 88195 - Posted: 17 Sep 2015 | 7:04:25 UTC - in response to Message 88168.


And remember, TThrottle was designed with Boinc in mind, so make sure to use it!


I highly recommend TThrottle as well.
http://efmer.com/b/?q=tthrottle




Oh , awesome. Thanks!

Profile SteveRCProject donor
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Joined: 22 Mar 10
Posts: 146
ID: 57364
Credit: 454,732,914
RAC: 0
Discovered 1 mega primeEliminated 2 conjecture "k"s321 LLR Turquoise: Earned 5,000,000 credits (5,306,247)Cullen LLR Turquoise: Earned 5,000,000 credits (5,756,791)ESP LLR Turquoise: Earned 5,000,000 credits (5,917,101)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,688,089)PPS LLR Jade: Earned 10,000,000 credits (17,220,123)PSP LLR Turquoise: Earned 5,000,000 credits (6,488,430)SoB LLR Jade: Earned 10,000,000 credits (12,275,142)SR5 LLR Jade: Earned 10,000,000 credits (11,517,371)SGS LLR Jade: Earned 10,000,000 credits (13,536,986)TRP LLR Jade: Earned 10,000,000 credits (10,513,978)Woodall LLR Turquoise: Earned 5,000,000 credits (6,452,373)321 Sieve Silver: Earned 100,000 credits (246,534)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,474,263)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,971,807)PPS Sieve Double Bronze: Earned 100,000,000 credits (120,732,256)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,557,924)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,896,883)AP 26/27 Jade: Earned 10,000,000 credits (13,596,609)GFN Double Bronze: Earned 100,000,000 credits (160,216,125)PSA Turquoise: Earned 5,000,000 credits (6,367,890)
Message 88208 - Posted: 17 Sep 2015 | 15:59:20 UTC - in response to Message 88195.

Almost all Laptop fans suck air in the bottom and blow it out the side, so that's why those cooling pads that blow air up onto the bottom are very effective.. But I have found that even propping the laptop up off the table to allow free air flow around the fan intake can result in a good 5degC drop on the Tthrottle graph! - I use a large "D-cell" battery at each corner to raise it up for better airflow!

- This tends to be a great deal more effective than any "metal-tray" heatsink method... (I've tried them all!)

Don't forget a good blast of compressed air every now and again to blow out the dust!
(SHORT blasts - or jam the fan with a pin - to avoid over-spinning the fan and burning the bearings!!)

____________

Profile Gary Craig
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Credit: 1,005,618,748
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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,893,273)Cullen LLR Ruby: Earned 2,000,000 credits (2,440,687)ESP LLR Turquoise: Earned 5,000,000 credits (5,738,876)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,292,626)PPS LLR Turquoise: Earned 5,000,000 credits (9,648,951)PSP LLR Turquoise: Earned 5,000,000 credits (5,653,927)SoB LLR Jade: Earned 10,000,000 credits (10,558,341)SR5 LLR Turquoise: Earned 5,000,000 credits (5,748,705)SGS LLR Ruby: Earned 2,000,000 credits (3,335,713)TRP LLR Jade: Earned 10,000,000 credits (12,602,818)Woodall LLR Ruby: Earned 2,000,000 credits (2,282,622)321 Sieve Gold: Earned 500,000 credits (740,566)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (59,788,598)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,143,068)PPS Sieve Double Gold: Earned 500,000,000 credits (524,673,938)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,130,821)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,074,710)AP 26/27 Sapphire: Earned 20,000,000 credits (43,842,888)GFN Double Silver: Earned 200,000,000 credits (224,648,943)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 88216 - Posted: 17 Sep 2015 | 18:32:18 UTC - in response to Message 88208.

SteveRC wrote (in part):


- This tends to be a great deal more effective than any "metal-tray" heatsink method... (I've tried them all!)

I've tried a kitchen sauce pan upside-down, and putting the laptop on that. Lame, I know, and it doesn't work well.

Don't forget a good blast of compressed air every now and again to blow out the dust!
(SHORT blasts - or jam the fan with a pin - to avoid over-spinning the fan and burning the bearings!!)

Thanks for that reminder. I'm pretty good about blasting out the desktop machines, but often forget the laptop (Macbook Air).
--Gary

Message boards : General discussion : Why does PrimeGrid make my computer work so hard?

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