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overexchange
overexchange
5:11 AM
Does SYSVinit system support CGROUPS?
Amazon Linux 1 image(ECS optimised) has SYSVinit
 
 
2 hours later…
user10662977
user10662977
7:10 AM
My computer needs work. Can anyone think of any thing that takes lots of CPU?
 
 
2 hours later…
Faheem Mitha
Faheem Mitha
8:44 AM
@user10662977 SETI@home?
 
Kusalananda
Kusalananda
8:59 AM
I was going to suggest something like that, but I forgot what the project was called :-/
There are also pi-calculating projects, protein folding, and others.
 
Faheem Mitha
Faheem Mitha
9:13 AM
@Kusalananda Yes, I expect there are many such projects. There might be lists somewhere.
The SETI@home Wikipedia page mentions in a couple.
> SETI@home was released to the public on May 17, 1999,[5][6][7][8] making it the third large-scale use of distributed computing over the Internet for research purposes, after Great Internet Mersenne Prime Search (GIMPS) was launched in 1996 and distributed.net in 1997. Along with MilkyWay@home and Einstein@home, it is the third major computing project of this type that has the investigation of phenomena in interstellar space as its primary purpose.
 
Kusalananda
Kusalananda
List of distributed computing projects
This is a list of distributed computing and grid computing projects. For each project, donors volunteer computing time from personal computers to a specific cause. The donated computing power comes typically from CPUs and GPUs, but can also come from home video game systems. Each project seeks to solve a problem which is difficult or infeasible to tackle using other methods. == Distributed computing projects == === Active projects === === Inactive projects === (Work on these projects was either finished, or the project was discontinued). == Grid computing projects == While distribut...
 
Faheem Mitha
Faheem Mitha
@Kusalananda Ah, handy.
 
 
6 hours later…
jesse_b
jesse_b
3:20 PM
(removed)
 
Stephen Kitt
Stephen Kitt
(removed)
 
jesse_b
jesse_b
hah
 
Videonauth
Videonauth
guess you guys are bored :P
 
Faheem Mitha
Faheem Mitha
I wonder how much the search for extra-terrestrial life messes up ones computer.
 
Isaac
Isaac
Given that the entry level for the 500 fastest computers in the world is .14 petaflops, some of the distributed projects in the list have enough power to be listed in the 500 list.
Folding@home 146,091 (Jan 2019)
Collatz Conjecture 6,379 (Jul 2017)
Einstein@Home 2,388.7 (Mar 2019)
SETI@home 1,089.6 (Mar 2019)
November list for 500: top500.org/lists/2019/11
Oooops please change .14 with 1.14 petaflops.
Oak Ridge National Laboratory’s Summit system holds top honors with an HPL result of 148.6 petaflops.
which is just a little above the Folding@home reported power: 146.1 petaflops.

Just Amazing.
 
Videonauth
Videonauth
3:50 PM
yes it is,I stopped contributing in 2014 or so and still --> boincstats.com/stats/-1/user/detail/…
 
 
5 hours later…
Tim
Tim
8:59 PM
I was wondering what database migration is used for? How is it done?
-2
Q: How are migrations done?

TimDatabase System Concepts says The basic scheme is to dump the entire contents of the database to stable storage periodically—say, once per day. For example, we may dump the database to one or more magnetic tapes. If a failure occurs that results in the loss of physical database blocks, ...

migration schema-migration
 
 
2 hours later…
Kusalananda
Kusalananda
11:08 PM
@Tim The answer to "why" is in the question: "when migrating data to a different instance of the database, or to a different version of the database software"
The answer to "how" is also in the question, you dump the contents to one or several files and then load them in again, possibly on another machine or into another database instance, or to replace the current data.
How this is practically done depends on the type of database being used. With MySQL databases, you would use mysql_dump to dump the data. The output would be in the form of INSERT statements that could, at a later date, be fed into the mysql client to restore the data.
 

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