Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Scientific Computing in Ruby at Ruby World Conf...
Search
Sameer Deshmukh
November 03, 2016
Programming
1
220
Scientific Computing in Ruby at Ruby World Conference 2016.
Talk on Scientific Computing in Ruby at Ruby World Conference, Matsue City, Shimane, Japan.
Sameer Deshmukh
November 03, 2016
Tweet
Share
More Decks by Sameer Deshmukh
See All by Sameer Deshmukh
XND and rubyplot - typed arrays and visualization in Ruby
v0dro
0
210
Ferrari Driven Development: superfast Ruby with Rubex
v0dro
0
2k
Ruby Kaigi 2017 - C how to supercharge your Ruby with Rubex
v0dro
1
430
Deccan Ruby Conf 2017 Rubex intro
v0dro
0
91
Rubex: A new way of writing C extensions for CRuby
v0dro
1
500
Scientific Computing in Ruby at Ruby World Conference 2016
v0dro
0
120
Data Analysis in RUby with daru
v0dro
3
3.5k
Introduction benchmark-plot at PRUG
v0dro
0
110
Webinar - Scientific Computing and Data Visualization
v0dro
0
95
Other Decks in Programming
See All in Programming
サイトを作ったらNFCタグキーホルダーを爆速で作れ!
yuukis
0
750
サーバーサイドのビルド時間87倍高速化
plaidtech
PRO
0
690
【第4回】関東Kaggler会「Kaggleは執筆に役立つ」
mipypf
0
990
開発チーム・開発組織の設計改善スキルの向上
masuda220
PRO
18
9.6k
TDD 実践ミニトーク
contour_gara
1
270
CSC305 Summer Lecture 12
javiergs
PRO
0
130
AHC051解法紹介
eijirou
0
640
SOCI Index Manifest v2が出たので調べてみた / Introduction to SOCI Index Manifest v2
tkikuc
1
120
tool ディレクティブを導入してみた感想
sgash708
1
160
More Approvers for Greater OSS and Japan Community
tkikuc
1
110
MCPでVibe Working。そして、結局はContext Eng(略)/ Working with Vibe on MCP And Context Eng
rkaga
4
590
Zendeskのチケットを Amazon Bedrockで 解析した
ryokosuge
3
230
Featured
See All Featured
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
BBQ
matthewcrist
89
9.8k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
Rails Girls Zürich Keynote
gr2m
95
14k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Automating Front-end Workflow
addyosmani
1370
200k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
284
13k
Producing Creativity
orderedlist
PRO
347
40k
A Modern Web Designer's Workflow
chriscoyier
696
190k
Typedesign – Prime Four
hannesfritz
42
2.8k
Building Applications with DynamoDB
mza
96
6.6k
Transcript
namaste
Incredible India
None
None
None
India must master Western science and yet preserve its Culture
and Heritage. What India Dreams
None
City of Pune. Population: 6 million. Oxford of the East.
Sameer Deshmukh github.com/v0dro @v0dro
None
Dr. Gopal Deshmukh Sameer Desmukh Dr. Hemchandra Deshmukh Dr. Satish
Deshmukh
www.soundcloud.com/catkamikazee Sameer
None
None
Pune Ruby Users Group www.punerb.org @punerb @punerb @deccanrubyconf www.deccanrubyconf.org
Ruby Science Foundation www.sciruby.com @sciruby @sciruby
None
Scientific Computing In Ruby
iruby notebook
Browser based Ruby REPL for interactive computing.
Runs in your browser Input cell – accepts Ruby code
Output cell – can render HTML/CSS/JS
None
nmatrix
ndimensional array object. Interface Ruby with high speed C libraries.
require 'nmatrix' n = NMatrix.new( [2,2], [1,2,3,4], dtype: :float32, stype:
:dense ) n[0,1] # => 2.0
Data Types :int8 :float32 :int16 :float64 :int32 :complex64 :int64 :complex128
Storage types Dense Dense matrix. List Sparse matrix type storing
data as a linked list. Yale Sparse type storing data in the 'New Yale' format.
NMatrix C API
nmatrix nmatrix atlas nmatrix lapacke nmatrix fftw gsl
nyaplot
Interactive plotting tool for Rubyists.
interactive HTML and JavaScript plots that can be displayed in
your browser.
None
Mapnya Nyaplot3D Bionya Map visualizations with inbuilt country charts. Three
Dimensional interactive plots. Biology plots for visualizing relationships of genes.
daru (Data Analysis in RUby)
daru == (Hindi) ददार sake alcohol
library for analysis, cleaning, manipulation and visualization of data.
Read/write many data sources Ephemeral statistics functions Works well with
'wild' data Data indexing
Acts as glue between other SciRuby libraries.
Daru::Vector Heterogenous Array that can be indexed on any Ruby
object. Name Label(0) Label(1) Label(2) ... Label(n-1)
Daru::DataFrame 2D spreadsheet like data structure indexed by rows or
columns. Col0 Label(0) Label(1) Label(2) ... Label(n-1) Col1 Col2 Col(n-1) ....
New Ideas for better Ruby
“Any sufficiently advanced technology is indistinguishable from magic.” Arthur
C. Clarke
Writing C extensions • FFI gem. • Rice. • SWIG.
• Writing C bindings manually.
Rubyist! Write me a C extension!
def factorial n n > 1 ? n*factorial(n-1) : 1
end
unsigned long long int calc_factorial(unsigned long long int n) {
return (n > 1 ? n*calc_factorial(n-1) : 1); } static VALUE cfactorial(VALUE self, VALUE n) { return ULL2FIX( calc_factorial(NUM2ULL(n))); }
void Init_factorial() { VALUE cFact = rb_define_class("Fact", rb_cObject); rb_define_method(cFact, "factorial",
cfactorial, 1); }
a = Fact.new a.factorial(8000)
Big Problems • Difficult and irritating to write. • Time
consuming to debug. • Tough to trace memory leaks. • Change mindset from high level to low level language. • Need to care about small things.™* *Matz – Keynote at Red Dot Ruby Conf 2016, Singapore.
Rubex
Rubex is a Crystalinspired superset of Ruby that compiles to
C.
class Fact def factorial(unsigned long long int n) n >
1 ? n*factorial(n-1) : 1 end end
# Create a C static array and return a Ruby
Array def adder(n) a = StaticArray(i32, n) i32 i = 0 i32 sum = 0 a.each(n) { a[i] = i*5 } for 0 <= i < n do sum += a[i] end sum end
Received the Ruby Association Grant 2016 for development of Rubex
https://github.com/v0dro/rubex
Scientific Computing on JRuby
NMatrix and NArray are a linear algebra libraries for Ruby
similar to numpy.
NMatrix C/C++ core CRuby interpreter Numo::NArray C core CRuby interpreter
JRuby backend for the NMatrix Ruby API – Sci. Computing
on JVM.
Allows interfacing JRuby libraries with jBLAS for performance. Uses Apache
Commons Math library for storage and operations on internal Java arrays.
https://github.com/prasunanand/ nmatrix/tree/jruby_port
Symbolic Computation in Ruby with symengine.rb
(x – y) * (x ** y / z)
require 'symengine' x = SymEngine::Symbol.new("x") y = SymEngine::Symbol.new("y") z =
SymEngine::Symbol.new("z") f = (x – y) * (x ** y / z) f.expand.to_s # x**(1 + y)/z – x**y*y/z f == - (x**y*y/z) + (x**y*x/z) # true
https://github.com/symengine/ symengine.rb
Ruby in Space
NASA SPICE Ruby wrapper spice_rub
require 'spice_rub' k_pool = SpiceRub::KernelPool.instance k_pool.load_folder("spec/data/kernels") epoch = SpiceRub::Time.now moon
= SpiceRub::Body.new(:moon) earth = SpiceRub::Body.now(:earth) earth.position_at(epoch) moon.distance_from(:earth, epoch) # 395791.1464913574 (Km)
https://github.com/gau27/spice_rub
Cool SciRuby Stickers
Thank You Ruby World Conf!
Any questions?