[#397988] Help with sqlite3 please — Kaye Ng <lists@...>

I'm on Windows 7 Ultimate, 64-bit

18 messages 2012/08/03
[#397989] Re: Help with sqlite3 please — Chris Hulan <chris.hulan@...> 2012/08/03

sqlite is not ruby, so you should look for a sqlite group ;)

[#397990] Re: Help with sqlite3 please — Kaye Ng <lists@...> 2012/08/03

> However it looks like you have 'SQL' at the beginning of your CREATE

[#398031] Gem install or usage problem in shared environment — Tom Moulton <lists@...>

I am moving to a Westhost shared CPanel account and I am trying to set

17 messages 2012/08/04
[#398077] Re: Gem install or usage problem in shared environment — Tom Moulton <lists@...> 2012/08/06

I got a solution from WestHost and it may help others:

[#398086] Re: Gem install or usage problem in shared environment — Ryan Davis <ryand-ruby@...> 2012/08/07

[#398088] Re: Gem install or usage problem in shared environment — Tom Moulton <lists@...> 2012/08/07

Ryan Davis wrote in post #1071503:

[#398043] Redefining constants for a given instance only — "Andrea Dallera" <andrea@...>

Hello,=0A=0A=C2=A0 =C2=A0 let's say we have two empty classes:=0A=0Aclass=

9 messages 2012/08/05

[#398063] Join with ActiveRecord using non-standard schema — Tedi Roca <lists@...>

Hi,

13 messages 2012/08/06

[#398135] Help with database-related code pls — Kaye Ng <lists@...>

Hi guys! This is just a part of the code of a program that can load a

12 messages 2012/08/08

[#398190] How do you order your class methods? — masta Blasta <lists@...>

Just getting some layout ideas from other fellow devs.

11 messages 2012/08/10

[#398245] namespace instance methods? — John Doe <lists@...>

I have a large class with many instance methods that I want to

14 messages 2012/08/13

[#398287] Idea: def ... end returns the symbolized version of the newly-defined method, instead of nil — Peter <lumbergh@...>

This would allow useful syntax constructs such as this:

9 messages 2012/08/13

[#398362] case vs if-else — ajay paswan <lists@...>

Which one is faster?

20 messages 2012/08/16

[#398385] A Ruby class is never closed — Rubyist Rohit <lists@...>

Is it true that a Ruby class definition is never closed? Even after

18 messages 2012/08/16

[#398504] How to create an EXecutable file (Linux) — Fosiul Alam <lists@...>

Hi

13 messages 2012/08/22

[#398506] Save a file by clicking on a link — ajay paswan <lists@...>

I clicked a link to download a file using ruby, now I see the open-save

41 messages 2012/08/22

[#398641] force child threads run paralelly? — ajay paswan <lists@...>

I have created two child thread using main thread- child1 and child2.

19 messages 2012/08/28
[#398644] Re: force child threads run paralelly? — ajay paswan <lists@...> 2012/08/28

Ruby version:

[#398648] Re: force child threads run paralelly? — Tony Arcieri <tony.arcieri@...> 2012/08/28

On Tue, Aug 28, 2012 at 7:19 AM, ajay paswan <lists@ruby-forum.com> wrote:

[#398684] Can I do this with Ruby and sqlite alone? — Kaye Ng <lists@...>

Hi guys.

16 messages 2012/08/29

Re: working on multiple machines in a LAN

From: Brian Candler <lists@...>
Date: 2012-08-29 12:20:44 UTC
List: ruby-talk #398702
ajay paswan wrote in post #1073756:
> I have a program, now I want this to be run on multiple computers
> individually.
> Among them one computer (say boss) will distribute inputs to other
> computers (say followers) and itself in a LAN. The boss will also
> collect outputs from followers. Whenever a follower (including boss)
> finishes its task, it acknowledges to the boss, and boss gives the next
> input to that machine.
>
> How can it be done?

If you want to do this entirely in ruby, have a look at resque. The boss 
can queue up jobs (they actually go in a redis database) and the workers 
can do work. They can post their results back into redis or into a 
shared filesystem or whatever you choose.
https://github.com/defunkt/resque

If you want something a little less closely coupled to ruby, look at 
condor. This allows you to submit arbitrary jobs (which could be shell 
scripts or ruby scripts or binary executables) with arguments, and runs 
them on available worker nodes. There's a lot of functionality there, 
including the ability to set up DAGs (Directed Acyclic Graphs) of jobs, 
so that jobs don't run until all their necessary precursors have run, 
and fitting jobs into slots of available CPU and RAM.

Links:
http://research.cs.wisc.edu/condor/CondorWeek2012/presentations/adesmet-admin.pdf
http://research.microsoft.com/en-us/events/scidata04/todd_tannebaum.ppt
https://condor-wiki.cs.wisc.edu/index.cgi/wiki?p=GettingStarted
http://spinningmatt.wordpress.com/2011/06/12/getting-started-creating-a-multiple-node-condor-pool/
http://research.cs.wisc.edu/condor/manual/v7.8/

For some other related options see:
http://serverfault.com/questions/79350/software-for-batch-process-management-in-unix

-- 
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