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<t_>
so i just got my cluster up and running 16 nodes 30gb ~12TB on gigE, 80% of cpus are on i5's. Wondering if anyoene knows any novel applications of ruby on a cluster.. besides druby and rhinda.;. im looking for i guess a DSL for paralellizing ruby code. going to implement gluster fs and i have 3x mysql redis mongo and couch running. this is my first cluster and my first exp in any serious way with parallel proc. 10years exp devving. any ideas?
<t_>
or any tips on a direction to go in?
<yorickpeterse>
Rails
* yorickpeterse
runs
<yorickpeterse>
For starters, look into Rubinius/JRuby
<t_>
i have passenger and i plan on trying out unicorn yeah
<t_>
ah
<t_>
java better parallel yes?
<yorickpeterse>
don't even bother with MRI as those CPUs are not going to be utilized very well
<t_>
yeah GIL
<t_>
cool thanks
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<yorickpeterse>
<3 AWS
<yorickpeterse>
set an S3 URL's expiration date to a week from now
<yorickpeterse>
URL expires after a few hours already
<yorickpeterse>
wtf
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<ericwood>
lol
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<apeiros>
Errno::EDIDNTUNDERSTANDRFC
<apeiros>
that said, expiration dates are not a guarantee that a resource will exist that long. just that you should not use a cache anymore after that date.
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<yorickpeterse>
These are expirations of signed URLs
<yorickpeterse>
Not HTTP expiration headers
<apeiros>
ah
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<eval-in>
|jemc| => wrong number of arguments (1 for 0) (ArgumentError) ... (https://eval.in/324257)
<|jemc|>
>> ->(){ 88 }.call(5)
<eval-in>
|jemc| => wrong number of arguments (1 for 0) (ArgumentError) ... (https://eval.in/324258)
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<diegoviola>
interesting, thanks
<diegoviola>
is that the only difference?
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<|jemc|>
diegoviola: they also treat the `return` keyword differently - a lambda it returns from the lambda; in a proc it returns from the enclosing method or lambda
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* imperator
uses real lambdas! require 'notation'; λ{ puts 'hello' }.call
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<tubbo>
nice haha
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<AnonymousWS>
+cnt
<AnonymousWS>
i cant download ruby
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<ruby-lang569>
hello
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<_sillymarkets>
if i have 2 arrays, how can I create a new array that would be the values of the original two arrays divided, at each element?
<_sillymarkets>
a = [1, 2, 3, 4]; b = [2, 3, 4, 5]
<_sillymarkets>
i want a[1]/b[1] but iterate through the whole array like that?
<|jemc|>
_sillymarkets: look at Array#zip and Array#map
<_sillymarkets>
thanks!
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<_sillymarkets>
hm, zip combines 2 arrays into one at the correct indexes
<_sillymarkets>
but how would i get it to calculate a new value at each index... hmm...
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<|jemc|>
try the second half of my hint ;)
<_sillymarkets>
I'm looking at map right now, example is [1,2,3].map { |n| n * n } #=> [1, 4, 9] .... how would i get it so that it maps the 2nd element through a formula that pulls the 2nd element of other array? hmmm...