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Old 2018-07-26, 17:05   #1
a1call
 
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"Rashid Naimi"
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Default Cheap Horses

Thinking out load.

I need lots of cheap cores to rent.
Ideally windows instances to which I can RDP to and run instances of Pari GP
Cloud computing is just too expensive
I have no doubt there are millions of people who will be willing to rent their computers for a fraction of the cost of the cloud servers in the market
Ideally I would purchase a few windows licences and run them as virtual machines on rented computers
Any thoughts?
Thanks in advance.
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Old 2018-07-26, 17:52   #2
Mark Rose
 
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If you don't need datacenter reliability, it may be cheaper to build a bunch of small systems.

How many cores are you talking about?
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Old 2018-07-26, 18:06   #3
bsquared
 
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Quote:
Originally Posted by a1call View Post
I have no doubt there are millions of people who will be willing to rent their computers for a fraction of the cost of the cloud servers in the market
...
Any thoughts?
Thanks in advance.
This is the intersection of the Venn diagram of
"people who know how to grant remote access to their PCs"
with
"people who don't have the slightest clue about security"

People not in the second category would not make their PC's available (or would charge rent higher than Amazon for their time necessary to deal with security) and people not in the first category are unavailable to you. I don't think this overlapping region numbers in the millions of people. You would be lucky to have a pool of resources consisting of close family and friends.
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Old 2018-07-26, 18:09   #4
ET_
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Consider buying a dozen Raspberry PI 3B+...
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Old 2018-07-26, 19:09   #5
VBCurtis
 
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Quote:
Originally Posted by a1call View Post
Cloud computing is just too expensive
I have no doubt there are millions of people who will be willing to rent their computers for a fraction of the cost of the cloud servers in the market.
The cheapest tier of cloud computing costs less than the electricity needed to do the computations locally, using my own power rates at home. Your wish for lower costs amounts to finding people who don't think a computer uses electricity, or who don't have to pay a power bill.
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Old 2018-07-26, 20:30   #6
Batalov
 
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Quote:
Originally Posted by a1call View Post
Ideally windows instances to which I can RDP to and run instances of Pari GP
Lost for words.

This sounds like:
"Ideally in the middle of a desert, so I could both 1) easily get there and 2) swim."
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Old 2018-07-26, 22:32   #7
a1call
 
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Quote:
Originally Posted by Mark Rose View Post
If you don't need datacenter reliability, it may be cheaper to build a bunch of small systems.

How many cores are you talking about?
I saw this on Big-Bang-Theory:
Archimedes over said:
"Give me a lever and I will move the world"
Give me unlimited cores and I will find the largest known prime in a week or so
I found a 40k+ dd prime in about 24 core hours.
I'm doubling my target decimal digits at each run. The 80k dd has eluded me for nearly 48 hours so far with 24 cores devoted to the task. .

Last fiddled with by a1call on 2018-07-26 at 22:35
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Old 2018-07-26, 22:59   #8
a1call
 
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Quote:
Originally Posted by bsquared View Post
This is the intersection of the Venn diagram of
"people who know how to grant remote access to their PCs"
with
"people who don't have the slightest clue about security"

People not in the second category would not make their PC's available (or would charge rent higher than Amazon for their time necessary to deal with security) and people not in the first category are unavailable to you. I don't think this overlapping region numbers in the millions of people. You would be lucky to have a pool of resources consisting of close family and friends.
That's a good point and I did consider that.
The virtual machine aspect was as means of mutual pretention and ease of setup.
Otherwise I could save on the cost of windows licences.
They will only need to be able to setup the virtual box software and I can provide them with the snapshot to run.
I think there will be more people willing to participate than you might think.
In some countries they pay people pennies to sort at a desktop and click on port click adds.
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Old 2018-07-26, 23:03   #9
a1call
 
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Quote:
Originally Posted by ET_ View Post
Consider buying a dozen Raspberry PI 3B+...
I did.
The 32 bit factory default gets exponentially slow when you go into the near million dd arithmetic. I never did upgrade to 64 bit OS.
But still the raspberry is a good investment of you are willing to wait longer for results.
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Old 2018-07-26, 23:10   #10
a1call
 
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Quote:
Originally Posted by VBCurtis View Post
The cheapest tier of cloud computing costs less than the electricity needed to do the computations locally, using my own power rates at home. Your wish for lower costs amounts to finding people who don't think a computer uses electricity, or who don't have to pay a power bill.
I prefer windows because I don't have the expertise or patience to run Ubuntu shell access and install Pari on it.
Up here Canada any electricity you save on computing is offset by extra heating cost for 9 months a year if you keep the computer indoors. A lot of bitcoin mining data centres are being setup in Canada because they saved in cooling the CPUs.
Anyhow as we succussed elsewhere windows servers are prohibitively expensive to cloud-compute.

Last fiddled with by a1call on 2018-07-26 at 23:11
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Old 2018-07-26, 23:20   #11
a1call
 
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BTW, for the record:
2*3^24576*7^8192*19^8187*73^6419+1

Is a 41079 dd prime number.
Primality double checked by Pari GP isprime flag 0 in less than an hour and triple checked by Pari GP isprime flag 1 on a different computer and in a very few minutes.

Last fiddled with by a1call on 2018-07-26 at 23:21
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