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-   -   You just might be addicted to GIMPS if... (https://www.mersenneforum.org/showthread.php?t=654)

kracker 2012-11-01 00:27

...you go into a computer/office store and see lots of... LOTS of... ehhhuhh...
*resist*
:smile:

[SIZE=1][COLOR=Sienna](Don't worry, I never will)[/COLOR][/SIZE]

kladner 2012-11-01 00:59

[QUOTE=kracker;316591]...you go into a computer/office store and see lots of... LOTS of... ehhhuhh...
*resist*
:smile:

[SIZE=1][COLOR=Sienna](Don't worry, I never will)[/COLOR][/SIZE][/QUOTE]

You go to a computer store web site and fall into a state of helpless lust and rampant rationalization.

kracker 2012-11-01 01:01

[QUOTE=kladner;316594]You go to a computer store web site and fall into a state of helpless lust and rampant rationalization.[/QUOTE]

:max::lol:

EDIT: Which reminds me... I got access to 7 Core2 Duo's, 2.3Ghz, and ~4 I think lesser "Penryn(Wolfdale)" Pentiums.

kladner 2012-11-01 03:23

[QUOTE=kracker;316595]:max::lol:

EDIT: Which reminds me... I got access to 7 Core2 Duo's, 2.3Ghz, and ~4 I think lesser "Penryn(Wolfdale)" Pentiums.[/QUOTE]

I wonder how the Core2 Duos would compare to my late, lamented Opteron dual core 2.4 GHz. I think the 8 year old mobo cratered. I tried two different psu's and still the fans wouldn't even twitch. I even looked at Socket 929 boards recently, since I have the RAM and the CPU and everything else. It was a pretty good P-1 machine running mprime.

kracker 2012-11-01 16:08

[QUOTE=kladner;316600]I wonder how the Core2 Duos would compare to my late, lamented Opteron dual core 2.4 GHz. I think the 8 year old mobo cratered. I tried two different psu's and still the fans wouldn't even twitch. I even looked at Socket 929 boards recently, since I have the RAM and the CPU and everything else. It was a pretty good P-1 machine running mprime.[/QUOTE]

I'll post the benchmarks in the thread next sunday :smile:

ET_ 2012-11-01 16:39

You just might be addicted to GIMPS if...
 
...you postpone the readying of your luggage to check whether there are any last-minute reservations to add...

Luigi

aketilander 2012-11-02 10:34

Erased my own comment!

chappy 2012-12-07 15:55

1 Attachment(s)
New laptops at work...old laptops won't be salvaged till after the first of the year...

chappy 2013-01-11 20:48

...you use the exhaust of your laptop to keep your lunch warm...

kladner 2013-01-11 21:23

[QUOTE=chappy;324436]...you use the exhaust of your laptop to keep your lunch warm...[/QUOTE]

My dad worked for Humble Oil (later Exxon) in the exploration department. At first he was a field seismograph operator in multiple locations. When the company switched to contract exploration crews he was moved to the Houston office where he was one of the operators of the "Playback Machine." This was a very large collection of tube powered devices, all analog, which read strips of magnetic tape from the field and then burned the geophone traces to broad rolls of special paper.

At some times he was on an evening or night shift, therefore missing dinner at home. He then would heat things like canned beans on one of the tube power supplies.

ixfd64 2013-01-11 21:32

[QUOTE=chappy;324436]...you use the exhaust of your laptop to keep your lunch warm...[/QUOTE]

I used it to thaw frozen meals when I was in college. It wasn't very effective.

chappy 2013-01-11 21:55

[QUOTE=kladner;324440]
At some times he was on an evening or night shift, therefore missing dinner at home. He then would heat things like canned beans on one of the tube power supplies.[/QUOTE]


that's more or less me at the moment, but I picked up some sesame chicken from the local rice-house on my way in. I'm only running 2 of the 4 cores so I call that a simmer. If I add two more LL's about 10 minutes before lunch it will be heated through.

bcp19 2013-01-16 19:04

...you open/close your windows in the winter to keep your room cool enough (but not too cold) so your GPUs don't overheat.

kracker 2013-01-16 19:27

[QUOTE=bcp19;324931]...you open/close your windows in the winter to keep your room cool enough (but not too cold) so your GPUs don't overheat.[/QUOTE]

I thought everyone did that! :devil:

davar55 2013-01-16 19:33

... you keep forgetting that 11 is prime because it's not Mersenne.

bcp19 2013-02-22 18:13

...you buy a more fuel efficient car so you can better afford your electricity bill. (Mine now gets 49mpg)

vikingpower 2013-05-22 23:07

...you SELL your car in order to throw more CPUs @ M334214459 ( Yes, you will only ride the subway and "Strassenbahn" after that. What the heck. )

Uncwilly 2013-09-26 15:56

[QUOTE=chappy;324436]...you use the exhaust of your laptop to keep your lunch warm...[/QUOTE]...you use the power supply for your laptop to keep your coffee cup warm.

Uncwilly 2013-09-26 15:59

.... you dream that one of your machines finds a ~260 bit factor while doing P-1, that is a composite, but the largest factor in it is still a personal best of > 100 bits. (Happened to me last night.):sleep:

Uncwilly 2014-01-25 07:35

....silence near your computer worries you.

kracker 2014-01-26 02:42

[QUOTE=Uncwilly;365335]....silence near your computer worries you.[/QUOTE]

BS! Everyone has that... including me!....Right guys....right?

Uncwilly 2014-01-26 04:08

[QUOTE=kracker;365385]BS! Everyone has that... including me!....Right guys....right?[/QUOTE]I have been doing some video rendering of late. When I start a session, I turn off Prime95 to make it go faster (the rendering engine goes from 60% CPU usage to ~98% and the rendering time drops.) When I hear the fan drop off, I know the job is done. The silence seems odd.
:busy:

chappy 2014-01-26 15:31

[QUOTE=Uncwilly;365387]... I turn off Prime95 to make it go faster ...[/QUOTE]

you might be addicted to GIMPS if this makes you feel a little betrayed. :)

Xyzzy 2014-01-27 03:46

[QUOTE]When I start a session, I turn off Prime95 to make it go faster (the rendering engine goes from 60% CPU usage to ~98% and the rendering time drops.) When I hear the fan drop off, I know the job is done. The silence seems odd.[/QUOTE]
[QUOTE]In rare cases, users have reported the program can interfere with the performance of some programs such as disk defragmenters and some games. You can pause the program automatically when these programs are running by adding this line to prime.txt:

PauseWhileRunning=prog1[n1],prog2[n2],etc

The [n1], [n2] values are optional and indicate the number of worker threads to pause when prog1 and prog2 are running. The default value for n1 and n2 is to pause all worker threads. Note that the program will pause if the program name matches any part of the running program's file name. That is "foobar" will match "c:\foobar.exe", "C:\FOOBAR\name.exe", and even "C:\myfoobarprog.exe". Also, if prog1 is "*" the program will pause no matter what. Examples:

PauseWhileRunning=*[1] during 6-7/2:00-3:00
PauseWhileRunning=* during 23:00-24:00 else decomp[1],mygame[2]

The first example pauses one worker thread on Saturday and Sunday between 2AM and 3AM. The second example pauses all workers between 11PM and 12AM and pauses 1 worker if decomp is running and 2 if mygame is running.

LowMemWhileRunning is similar to PauseWhileRunning. This option does not allow workers use a lot of memory. This example, will make sure the program is using the minimum amount of memory possible while photoshop is running:

LowMemWhileRunning=Photoshop

By default, the program will check the PauseWhileRunning list every 10 seconds. You can adjust the time period with this prime.txt setting:

PauseCheckInterval=n

where n is the number of seconds between checking which programs are running.[/QUOTE]
:yzzyx:

Uncwilly 2014-01-27 06:37

[QUOTE=Xyzzy;365443]:yzzyx:[/QUOTE]
Yes, but if I am watching the telly while the rendering job is in action, the fan quieting down let's me know it is time to return to the keyboard and set up the next rendering job. At the moment the real life work of video editing, rendering, and posting to the web take precedent. (Working on having ~78 episodes that are ~28 minutes, rendered and posted as quickly as possible.)

chalsall 2014-06-21 22:40

Amazon EC2 g2.2xlarge
 
You [B][I][U]KNOW[/U][/I][/B] you're addicted to GIMPS when you spin up several EC2 g2.2xlarge instances to feed the DC'ers, so you don't have to bring your TF'ing for LL'ing trading partner's "Let GPU72 decide" GPUs away from the LL range... :smile:

For anyone interested, these instances supply one half of a NVidia GRID K520 (GK104), able to produce ~220 GHzd/d in the current DC TF'ing range (and not a bad amount of CPU LL'ing either). All for USD ~8.2 cents an hour ("spot instances" in Tokyo -- they can go away at any moment; thus I have the home directory for each instance configured with a persistent ECS volume).

I haven't done the math recently, but I suspect it is actually currently less expensive for me to do this than to simply run GPUs here in Barbados (because of our high electrical costs), not even factoring in (no joke intended) the capital costs of the hardware.

@James: please let me know if you'd like benchmarks, and exactly what I should run and report.

P.S. This is sooooo much fun!!! :smile:

TheMawn 2014-06-22 18:24

1 Attachment(s)
You might be addicted to GIMPS when this is you:

(I felt like being overdramatic this morning but it occurred to me certain individuals might have been entirely serious)

chalsall 2014-06-22 22:12

[QUOTE=TheMawn;376477]You might be addicted to GIMPS when this is you:[/QUOTE]

You shouldn't have shown the full residue of your result in the attached image (which was quite funny). :smile:

I've now scheduled this as a double-check on one of my R720 machines to ensure the matching residue is from a trusted machine.

TheMawn 2014-06-23 04:21

D'oh!

snme2pm1 2014-07-16 08:29

You have difficulty constructing a sentence where any m-word is not mersenne.

snme2pm1 2014-07-16 09:23

Yoda Speak
 
[QUOTE=TheMawn;376522]D'oh![/QUOTE]

I didn't see the comments here before first seeing:
[url]http://www.mersenneforum.org/newreply.php?do=newreply&p=377683[/url]
Thus the reason for the obvious "Yoda speak" there is now evident.
I didn't want to pollute the Sever problems thread with this comment!

petrw1 2015-03-16 15:37

[QUOTE=petrw1;238499]You choose retirement dates that are fully prime ... where I define "fully prime" for my purposes as:
- YYYY is prime
- MM is prime
- DD is prime
- MMDD is prime
- YYYYMMDD is prime

These are the only dates in the 21st century.
There are more if you choose to allow a single digit month and/or day.
I have my eyes on the next one coming up.

20031103
20110523*
20170223 MISSED I forgot 02 is prime My Bad
20170331*
20290211 Ditto (02)
20290223 Ditto (02)
20290307
20290331
20291123
20390113 NOT THIS ONE ... 01 Month is invalid
20391103
20530313
20530331
20630317
20631103
20690503
20811103
20830211 Ditto (02)
20870503
20890223 Ditto (02)
20890313
20990311[/QUOTE]

Seems I messed up....you have a few options I missed ....and 1 that I should not have had.

20110523 was my first retirement.
20170331 Planned to be my next ... and last

aurashift 2015-04-24 05:11

You check the results more than once a day.

You find the appropriate speed (not the highest) on your laptop cooler to keep turboboost from underclocking too much.

You alter BIOS settings for every ounce of performance.

You beg for haswell-ex systems.

You check the results again.

You have p95 installed on everything you can get your hands on.

You check the results again.

You check the results again.

only_human 2015-11-02 09:40

You play a drinking game every time a prime number occurs on your car odometer and after the first hundred miles vow to never buy a new car again.

ET_ 2015-11-02 10:53

[QUOTE=only_human;414606]You play a drinking game every time a prime number occurs on your car odometer and after the first hundred miles vow to never buy a new car again.[/QUOTE]

You decide to learn Arduino to build a digital clock that announces special primes... (guilty)

only_human 2015-11-02 18:01

After you run an LL test and learn that a particular number isn't prime, you retest that number again, just to be sure.

Brian-E 2015-11-02 18:49

You perform lots of P-1 and TF work on M57885161 in the hope of finding a factor and thereby demonstrating the inconsistency of the axioms on which Mathematics is founded.

only_human 2015-11-02 19:50

You entertain guests with stories of numbers that you tested on your last vacation, with a slideshow.

You stop seeing psychiatrists because you find it more economical to see prostitutes, to talk to about numbers.

During your last three dental visits you did not receive anaesthesia, and did not notice.

chalsall 2015-11-02 20:16

[QUOTE=only_human;414687]During your last three dental visits you did not receive anaesthesia, and did not notice.[/QUOTE]

That's abnormal?

only_human 2015-11-02 20:24

[QUOTE=chalsall;414689]That's abnormal?[/QUOTE]
You stop asking yourself questions like that.

You stop seeing your girlfriend; not because she is gone, you just don't notice her anymore.

chalsall 2015-11-02 20:33

[QUOTE=only_human;414690]You stop asking yourself questions like that.[/QUOTE]

Why? It actually worked.

I had my wisdom teeth removed while meditating.

It hurt like hell. But, interestingly, the pain was placed into a compartment which I could control.

The pain was separate from me. I could examine the pain from afar.

It was quite a remarkable experience.

only_human 2015-11-02 20:42

[QUOTE=chalsall;414691]Why? It actually worked.

I had my wisdom teeth removed while meditating.

It hurt like hell. But, interestingly, the pain was placed into a compartment which I could control.

The pain was separate from me. I could examine the pain from afar.

It was quite a remarkable experience.[/QUOTE]
I completely agree. I composed that while thinking about Pascal and his toothache:

[QUOTE]Men of Mathematics - Page 85 - Google Books Result
[url]https://books.google.com/books?isbn=1476784256[/url]
E.T. Bell - 2014 - ‎Mathematics
Lying awake one night (1658) in the tortures of toothache, Pascal began to think furiously about the cycloid to take his mind off the excruciating pain.[/QUOTE]

PS
On the other hand, When people worry about math, the brain feels the pain - See more at: [url]http://news.uchicago.edu/article/2012/10/31/when-people-worry-about-math-brain-feels-pain[/url]
[QUOTE]Surprisingly, the researchers found it was the anticipation of having to do math, and not actually doing math itself, that looked like pain in the brain. “The brain activation does not happen during math performance, suggesting that it is not the math itself that hurts; rather the anticipation of math is painful,” added Ian Lyons, a 2012 PhD graduate in psychology from UChicago and a postdoctoral scholar at Western University in Ontario, Canada.

The two report their findings in a paper, “When Math Hurts: Math Anxiety Predicts Pain Network Activation in Anticipation of Doing Math,” in the current issue of PlOS One.

For the study, the scholars worked with 14 adults who were shown to have math anxiety based on their responses to a series of questions about math. The questions gauged one’s anxiety when receiving a math textbook, walking to math class or realizing math requirements for graduation. Additional tests showed that these individuals were not overly anxious in general; instead, their heightened sense of anxiety was specific to math-related situations.

The study volunteers were tested in an fMRI machine, which allowed researchers to examine brain activity as they did math. Volunteers were given mathematics equations to verify — for example, the validity of the following equation: (12 x 4) – 19 = 29. While in the fMRI scanner, subjects were also shown short word puzzles. For these puzzles, people saw a series of letters (for example: yrestym) and had to determine if reversing the order of the letters produced a correctly spelled English word.

The fMRI scans showed that the anticipation of math caused a response in the brain similar to physical pain. The higher a person’s anxiety about math, the more anticipating math activated the posterior insula—a fold of tissue located deep inside the brain just above the ear that is associated with registering direct threats to the body as well as the experience of pain. Interestingly, math anxiety levels were not associated with brain activity in the insula or in any other neural region when volunteers were doing math.[/QUOTE]

science_man_88 2015-11-02 21:02

[QUOTE=only_human;414694]I completely agree. I composed that while thinking about Pascal and his toothache:



PS
On the other hand, When people worry about math, the brain feels the pain - See more at: [url]http://news.uchicago.edu/article/2012/10/31/when-people-worry-about-math-brain-feels-pain[/url][/QUOTE]

does it affect POMC neurons ?

chalsall 2015-11-02 21:12

[QUOTE=science_man_88;414696]does it affect POMC neurons ?[/QUOTE]

Science Man...

Is there a reason you need to interject?

only_human 2015-11-02 21:16

You just might be addicted to GIMPS if...

Neighboring apartment residents experience decreased winter heating costs.

During travel you discover yourself unable to sleep without the sound of computer fans.

[QUOTE=science_man_88;414696]does it affect POMC neurons ?[/QUOTE]
Depends on whether you smoke in these situations.
[QUOTE]50 Shades of Grey Matter - Page 285 - Google Books Result
[url]https://books.google.com/books?isbn=1743348673[/url]
Dr Karl Kruszelnicki - 2012 - ‎Science
“Nicotine Decreases Food Intake Through Activation of POMC Neurons”[/QUOTE]
Seriously, I have no idea, sorry. The brain activity pictures look very specifically localized but that actually tells a person like me almost nothing.

LaurV 2015-11-03 02:52

[QUOTE=only_human;414671]After you run an LL test and learn that a particular number isn't prime, you retest that number again, just to be sure.[/QUOTE]
guilty... :w00t:

only_human 2015-11-03 03:25

[QUOTE=LaurV;414741]guilty... :w00t:[/QUOTE]
You're not supposed to [I]admit[/I] things like that!

You're supposed to shift uncontrollably, then cough delicately and say: "This might have happened to a friend I know... do you have any advice - for my friend?"

Then with your head lowered you say: "Girls won't think he's strange, will they?"

Then you peek up guardedly and say "Hey, the Bears are having a great season aren't they?"

kladner 2015-11-03 03:40

[QUOTE=only_human;414744]You not supposed to [I]admit[/I] things like that!

You're supposed to shift uncontrollably, then cough delicately and say: "This might have happened to a friend I know... do you have any advice - for my friend?"

Then with your head lowered you say: "Girls won't think he's strange, will they?"

Then you peek up guardedly and say "Hey, the Bears are having a great season aren't they?"[/QUOTE]

Yaarrgh! :chappy: :lol:

LaurV 2015-11-03 04:49

[QUOTE=only_human;414671]After you run an LL test and learn that a particular number isn't prime, you retest that number again, just to be sure.[/QUOTE]
This might have happened to a friend I know... do you have any advice - for my friend?
:redface: Girls won't think he's strange, will they? :redface:
Who the hack are the Bears? :razz:

only_human 2015-11-03 04:57

[QUOTE=LaurV;414768]This might have happened to a friend I know... do you have any advice - for my friend?
:redface: Girls won't think he's strange, will they? :redface:
Who the hack are the Bears? :razz:[/QUOTE]
The Chicago Bears. I adapted the line from this scene:
[url]http://youtu.be/u2pu0m9iTo4[/url]
[YOUTUBE]u2pu0m9iTo4[/YOUTUBE]

kladner 2015-11-03 05:04

[QUOTE=LaurV;414768]This might have happened to a friend I know... do you have any advice - for my friend?
:redface: Girls won't think he's strange, will they? :redface:
[B]Who the hack are the Bears? [/B]:razz:[/QUOTE]

An obscure sports team, on a nondescript planet in the S-K system, Your Majesty. The inhabitants refer to the planet as 'Uuuuurrrrth'.

storm5510 2017-11-07 04:37

You might be addicted to GIMPS if.....you rely on [I]mfaktc[/I] to heat your living room and kitchen in the winter. :smile:

kladner 2017-11-07 04:52

[QUOTE=storm5510;471232]You might be addicted to GIMPS if.....you rely on [I]mfaktc[/I] to heat your living room and kitchen in the winter. :smile:[/QUOTE]
I qualify on the space heater front, though it mostly keeps the space under my desk warm. It was cozier with two 580s and a high wattage AMD CPU in the box. :camping:

ixfd64 2017-11-08 17:55

I once used the heat from my laptop to defrost a frozen dinner back in my college days.

kladner 2017-11-08 18:43

In pre-digital days at Exxon exploration, my Dad worked with a room full of tube-driven devices. This "Playback Machine" took in wide magnetic tapes from field seismograph operators and burned the traces on wide rolls of paper. He worked graveyard shifts sometimes. He found that one of the large tube power supply units was great for heating up a can of beans.

storm5510 2017-11-09 02:49

[QUOTE=kladner;471233]I qualify on the space heater front, though it mostly keeps the space under my desk warm. It was cozier with two 580s and a high wattage AMD CPU in the box. :camping:[/QUOTE]

This works quite well until the outdoor temperature drops into the mid 40's on the F scale. The culprit is a sliding patio door in the back. However, it keeps my furnace from running as much with its 30 amp heating element.

daxmick 2017-12-03 19:01

... if you read all the posts to this thread in one sitting.

VBCurtis 2017-12-03 19:29

[QUOTE=daxmick;473068]... if you read all the posts to this thread in one sitting.[/QUOTE]

:tu::beer2::bow:

Welcome to the primenerd club, sir.

kladner 2017-12-03 23:26

[QUOTE=VBCurtis;473072]:tu::beer2::bow:

Welcome to the primenerd club, sir.[/QUOTE]
Agreed and Seconded. Well said!

ET_ 2017-12-04 07:48

[QUOTE=kladner;473084]Agreed and Seconded. Well said![/QUOTE]

And thirded! :grin::cool:

ET_ 2017-12-24 17:58

...if you are spending your Christmas Eve writing and reading on MersenneForum. :xmastree:

Uncwilly 2017-12-24 23:44

[QUOTE=ET_;474808]...if you are spending your Christmas Eve writing and reading on MersenneForum. :xmastree:[/QUOTE]
Or the day after that and you note that:

OCT 31 = DEC 25

Therefore Xmas = Halloween.

chalsall 2017-12-24 23:57

[QUOTE=Uncwilly;474825]Or the day after that and you note that: OCT 31 = DEC 25 Therefore Xmas = Halloween.[/QUOTE]

Or when someone asks you about a story in the bible, and you answer "No, I've never read the bible. I don't enjoy fantasy."

I recently answered thusly. It didn't go over so well....

retina 2017-12-25 00:45

[QUOTE=chalsall;474826]Or when someone asks you about a story in the bible, and you answer "No, I've never read the bible. I don't enjoy fantasy."

I recently answered thusly. It didn't go over so well....[/QUOTE]Yeah, I'm not surprised the others despised you for that. How can anyone not like fantasy? :loco:

chalsall 2017-12-25 01:12

[QUOTE=retina;474827]Yeah, I'm not surprised the others despised you for that. How can anyone not like fantasy? :loco:[/QUOTE]

Terry Pratchett's Disc World, very cool. Hard fantasy.

Rowling's Harry Potter? A money making machine.

The Bible... Perhaps another money making machine.

ET_ 2017-12-25 10:25

[QUOTE=chalsall;474828]Terry Pratchett's Disc World, very cool. Hard fantasy.

Rowling's Harry Potter? A money making machine.

The Bible... Perhaps another money making machine.[/QUOTE]

Did you ever read Niven's Ringworld? :smile:

chalsall 2017-12-26 05:02

[QUOTE=ET_;474841]Did you ever read Niven's Ringworld? :smile:[/QUOTE]

Of course. I've read most, if not all, of Niven's work, even when it was co-authored with Pournelle.

WGJC3107 2018-05-30 20:11

You keep your computer on 24h a day even though your mouse is really bright

kriesel 2018-08-31 22:47

[QUOTE=LaurV;414768]
Who the hack are the Bears? :razz:[/QUOTE]An all purpose practice squad, for numerous NFL pro football teams, whose players inexplicably receive pro football level salaries. [URL]https://en.wikipedia.org/wiki/2017_Chicago_Bears_season[/URL]

Uncwilly 2018-12-28 15:47

You make this post:
[url]https://www.mersenneforum.org/showpost.php?p=504205&postcount=719[/url]

Maciej Kmieciak 2019-03-04 23:59

[QUOTE=WGJC3107;488654]You keep your computer on 24h a day even though your mouse is really bright[/QUOTE]

I unplug my mouse for the night

kladner 2019-03-05 01:54

[QUOTE=kriesel;495070]An all purpose practice squad, for numerous NFL pro football teams, whose players inexplicably receive pro football level salaries. [URL]https://en.wikipedia.org/wiki/2017_Chicago_Bears_season[/URL][/QUOTE]
Also, just one of the several pro sports [STRIKE]rackets[/STRIKE] teams which afflict Chicago and are always angling more taxpayer support for their private businesses, especially when it comes to stadiums, roads, water, sewage, police support, and a host of other benefits the owners don't begin to pay for. They do entertain pols in their sky boxes, though.

InsetIowa9 2019-04-04 00:44

...you can no longer use Chrome due to P-1 stage 2 using all the memory, but watching 25 RP’s at a time getting processed is too beautiful...

(Note: If 25 relative primes seems low, it’s because I have a really old laptop that only supports 4GB, and Windows uses about 1.8GB of that.)

lukerichards 2019-04-29 20:21

... you remember you have an old broken Dell computer with a 2.5Ghz Intel Core2 Duo, no Hard Drive, no graphics card and no network card, dig it out and manage to get it running a Live USB version of Debian which seems to be running mprime quite satisfactorily.

Uncwilly 2020-08-09 02:46

The local constables pay you a visit because the local electrical utility has flagged your house as a possible "grow house"

Uncwilly 2020-08-09 02:47

Bitcoin miners buy the hardware that you are taking out of production because it is too slow.

Uncwilly 2020-08-09 02:50

Amazon, Google, Microsoft cloud services send you Christmas cards.

storm5510 2020-08-09 15:10

[QUOTE=Uncwilly;552990]The local constables pay you a visit because the local electrical utility has flagged your house as a possible "grow house"[/QUOTE]

:missingteeth:

When you can relax in the winter wearing only your Bermuda Shorts with the furnace turned off.

Chuck 2020-08-09 17:49

You get up in the middle of the night to restart all your Colab notebooks.

Uncwilly 2020-08-09 18:31

You buy broken mobile phones and [URL="https://www.mersenneforum.org/showthread.php?t=23998"]force them into GIMPS servitude[/URL].

Uncwilly 2020-08-20 18:43

You wear/order/design/purchase one of these: [url]https://www.mersenne.org/images/shirt.png[/url]

kriesel 2020-08-21 05:04

Ernst's $300/month electrical power bill seems low.

Viliam Furik 2020-08-21 07:28

[QUOTE=Uncwilly;554405]You wear/order/design/purchase one of these: [url]https://www.mersenne.org/images/shirt.png[/url][/QUOTE]

I have mixed feelings. I don't know whether I want to be delighted, or angry...

Uncwilly 2020-08-21 13:44

[QUOTE=Viliam Furik;554480]I have mixed feelings. I don't know whether I want to be delighted, or angry...[/QUOTE]You should be delighted.

Uncwilly 2020-08-21 13:54

[QUOTE=kwstone;5976]... you keep your laptop PC in the refrigerator.[/QUOTE]
You convert a [URL="http://www.lpappliances.com/G-Absorp.html"]gas powered refrigerator[/URL] to run off the waste heat from your GPUs.

kruoli 2021-06-10 10:08

...you cannot remember the last time you slept without having some fans hissing in the distance.

For stronger addictions:
...you cannot remember the last time without having some fans hissing around you.

Uncwilly 2021-06-10 12:36

[QUOTE=kruoli;580526]...you cannot remember the last time you slept without having some fans hissing in the distance.[/QUOTE]You have a hard time sleeping while away on vacation because there is no sound of the fans to lull you to sleep.

retina 2021-06-10 12:47

[QUOTE=Uncwilly;580540]You have a hard time sleeping while away on vacation because there is no sound of the fans to lull you to sleep.[/QUOTE]You take your computers on vacation with you partly to help you sleep, but mainly to make sure they keep crunching.

kriesel 2021-06-10 13:07

[QUOTE=retina;580543]You take your computers on vacation with you partly to help you sleep, but mainly to make sure they keep crunching.[/QUOTE]Vacation?
[spoiler]And isn't that what SSH, remote desktop, and VPN are for?[/spoiler]

EdH 2021-06-10 13:32

[QUOTE=kriesel;580545]Vacation?
[spoiler]And isn't that what SSH, remote desktop, and VPN are for?[/spoiler][/QUOTE]Yep!

birtwistlecaleb 2021-06-30 17:32

If you save up more for extra computers than for food.

kriesel 2021-06-30 17:42

"extra computers" is an oxymoron. There's such a thing as spare parts, cold spares, or computers uneconomic to operate except in the heating season, but "extra"? What's that? I can only wear one pair of shoes, but many systems can be run in parallel, subject to limits on power delivery and heat rejection and total budget.

One might be addicted if contemplating an HVAC upgrade to raise the heat rejection limit...

Uncwilly 2021-06-30 18:07

You are using a Stirling cycle in your GPU's cooling system loop.

Dr Sardonicus 2021-06-30 18:24

[QUOTE=Uncwilly;582323]You using a sterling cycle in your GPU's cooling system loop.[/QUOTE]Perhaps you mean [url=https://www.sfu.ca/~mbahrami/ENSC%20461/Notes/Stirling%20Cycle.pdf]Stirling cycle[/url]...

LaurV 2021-07-01 09:36

Nope, he means [URL="https://en.wikipedia.org/wiki/Stirling_engine#Configurations"]stirling engine[/URL]. :razz:
:busy:

kriesel 2021-07-01 17:12

[QUOTE=LaurV;582416]Nope, he means [URL="https://en.wikipedia.org/wiki/Stirling_engine#Configurations"]stirling engine[/URL]. :razz:
:busy:[/QUOTE]Nope, that GIF is most likely a simplified schematic of an air cooled radial piston [U]internal [/U]combustion engine. A nearby university's Mechanical Engineering Department had a cut-open actual aircraft radial engine on display in the 1970s with that cylinder count and layout. IIRC it was designed for military aircraft used in WWII, with outstanding specific fuel consumption and other specifications for its time, rotatable by hand on the truncated prop blades, and with deburring/edge breaks but no finger guards at the cuts. [URL="https://en.wikipedia.org/wiki/Pratt_%26_Whitney_Wasp_series"]https://en.wikipedia.org/wiki/Pratt_%26_Whitney_Wasp_series[/URL]

Stirling engines are [U]external [/U]combustion or other heat source and consequently have several times the heat exchange requirement per unit of output power:[URL="https://en.wikipedia.org/wiki/Stirling_engine"] https://en.wikipedia.org/wiki/Stirling_engine[/URL]

Internal combustion engines, for fuel input Q, produce roughly Q/3 output work, Q/3 cooling system load, Q/3 heat content of the exhaust flow, while external combustion engines like the Stirling engine of equal efficiency need Q heat exchange in, 2Q/3 heat exchange out; 5Q/3 total heat exchange, versus Q/3 for the internal combustion engine; 5-fold higher. Plus Stirling engines typically operate at lower hot side temperature, so lower absolute temperature ratio, lower theoretical maximum efficiency, increasing the heat exchange/work output ratio above 5:1.

LaurV 2021-07-02 02:35

There is nothing like a joke killer...

To paraphrase your post in another thread, [U]did you click my link[/U]? I mean, before giving such a long, futile talk (in a joke thread, no one give a duck about such complex technical details, and noone will find them ever after a week or two), and before posting [U]the same link[/U] again? (not mentioning quoting the whole previous post, image included).


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