[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

...but then is Julia *really* fast ? I guess that depends on what you compare with. I've been doing lots of numerics for the last 20+ years and for that I use fortran. This is *damn* fast, even more if you use something like the Intel compiler. Fortran many times performs better than C, and the

[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

btw, I use Julia also, and I really like it very much :)

[julia-users] Re: Postgres type questions

It is unlikely that the examples you want for this package have been written. You might also look at https://github.com/JuliaDB/PostgreSQL.jl If you think there is something that is not working properly, you could post an issue at https://github.com/NCarson/Postgres.jl/issues. On Monday, July 11

[julia-users] MathLink error while using Mathematica from Julia

Hi, I have Mathematica 10.4.1 installed on my OS X. I am trying to connect to Mathematica this way as explained here: https://github.com/MikeInnes/Mathematica.jl julia> Pkg.add("Mathematica") *INFO: Initializing package repository /Users/Rangarajan/.julia/v0.4* *INFO: Cloning METADATA from git

[julia-users] Re: MathLink error while using Mathematica from Julia

post your path, as much of it as you want to make public (launch Applications > Utilities > Terminal, type echo $PATH) On Tuesday, July 12, 2016 at 5:42:37 AM UTC-4, Rangarajan Krishnamoorthy wrote: > Hi, > I have Mathematica 10.4.1 installed on my OS X. I am trying to connect to > Mathematica

[julia-users] Re: MathLink error while using Mathematica from Julia

Thanks. This is what I get: /Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Applications/clojure:/usr/local/go/bin - Rangarajan On Tuesday, July 12, 2016 at 4:41:27 PM UTC+5:30, Jeffrey Sarnoff wrote: > > post your path, as much o

[julia-users] Re: PriorityQueue for fast large network simulation

> > Is it possible to set up a priority queue with integer keys instead? > Yes. julia> pq=Collections.PriorityQueue() Base.Collections.PriorityQueue{Any,Any,Base.Order.ForwardOrdering} with 0 entries julia> pq[1]=10;pq[2]=5;pq[3]=20; julia> pq Base.Collections.PriorityQueue{Any,Any,Base.Orde

[julia-users] Re: how can i rewrite my code to make use of the parallel feature of julia?

Here are a few answers to similar questions, after the docs -- that is a good place to start. https://groups.google.com/forum/#!searchin/julia-users/parallel/julia-users/fe1yZawvvi0/kjX-ZIJwpCAJ https://groups.google.com/forum/#!searchin/julia-users/parallel/julia-users/vt2hS9h36a0/_rqJ0Uj_Wy8J h

Re: [julia-users] Re: Julia ccall windows

Thanks a lot. It can call the function now and fills the sockfd(fd) with output. But its wrong output. It should be 128, but in Julia set it 552. I try different variables (8,16,32,64). nothing helps. Don't know if its Julia problem or what. tiistai 12. heinäkuuta 2016 0.31.46 UTC+3 Bart Jansse

Re: [julia-users] Re: Julia ccall windows

What is the definition of SOCKET in your C code? On Tue, Jul 12, 2016 at 1:43 PM Karli Kund wrote: > Thanks a lot. It can call the function now and fills the sockfd(fd) with > output. But its wrong output. It should be 128, but in Julia set it 552. I > try different variables (8,16,32,64). nothi

[julia-users] Re: Writable arrays

If your arrays keep their shape and dimensionality, the FixedSizeArrays package is worthwhile. On Wednesday, June 15, 2016 at 1:41:38 PM UTC-4, Robert DJ wrote: > > In a function that modifies an array argument I would like to pass at > least

[julia-users] Suddenly PyPlot giving me grief

I've suddenly been having a great deal of trouble with PyPlot on Julia 0.4.6 on Mac. Here's one sort of problem I've gotten: julia> plot([1,2],[1,3]) ERROR: ArgumentError: haskey of NULL PyObject in haskey at /Users/ers/.julia/v0.4/PyCall/src/PyCall.jl:292 in plot at /Users/ers/.julia/v0.4

[julia-users] Re: Suddenly PyPlot giving me grief

As a quick solution, I would suggest deleting or renaming ~/.julia/v0.4 and reinstalling all the packages. El martes, 12 de julio de 2016, 8:11:53 (UTC-4), Ed Scheinerman escribió: > > I've suddenly been having a great deal of trouble with PyPlot on Julia > 0.4.6 on Mac. > > Here's one sort of

[julia-users] Re: PriorityQueue for fast large network simulation

For efficiency, you probably want a typed version: julia> Base.Collections.PriorityQueue(Int, Int) Base.Collections.PriorityQueue{Int64,Int64,Base.Order.ForwardOrdering} with 0 entries El martes, 12 de julio de 2016, 7:34:43 (UTC-4), Jeffrey Sarnoff escribió: > > Is it possible to set up a prior

[julia-users] Re: printing datatables

I cannot replicate your output, it looks as advertised on my machine. Make sure you have the current version and try it with a tiny database that you create and populate using SQLite.jl. On Wednesday, June 15, 2016 at 11:43:28 AM UTC-4, Erwin Kalvelagen wrote: > > In https://github.com/JuliaDB/

[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

just my two cents... On Tuesday, July 12, 2016 at 5:28:24 AM UTC+2, Chris Rackauckas wrote: > > > MATLAB really improved their JIT in 2015b, but as you can see, it cannot > come close to Julia. The main reason is that, although it can do quite a > bit because it ensures type stability, it has ty

Re: [julia-users] Re: Julia ccall windows

In .h file it says "#define SOCKCAST (char *)", but i thing the function MServerInit is doing this:http://www.linuxhowtos.org/C_C++/socket.htm with server side version. This is not familiar to me. Maybe I have to code the "MServerInit" from the start to Julia? tiistai 12. heinäkuuta 2016 14.50

[julia-users] Re: MathLink error while using Mathematica from Julia

In fact, MathLink is not found in your path .. and that is why Julia did this *julia> **using Mathematica* *ERROR: LoadError: ArgumentError: MathLink not found in path* we want to add MathLink to your path Copy your current path into a tmp text file Assuming you can navigate to the Mathematic

Re: [julia-users] JuliaCon schedule announced

I don't observe any trouble. On Tuesday, July 12, 2016 at 3:16:10 AM UTC+2, Eric Forgy wrote: > > Anyone else having trouble watching Stefan's talk? It keeps stalling > (feels like I'm on a modem), but my connection is fairly decent > > > >

[julia-users] Re: Writable arrays

I think FixedSizeArrays are immutable. On Tuesday, July 12, 2016 at 2:09:30 PM UTC+2, Jeffrey Sarnoff wrote: > > If your arrays keep their shape and dimensionality, the FixedSizeArrays > package is > worthwhile. > > On Wednesday, June 15, 2016

[julia-users] Re: Writable arrays

right you are .. Clearly, another avenue is appropriate in July-2016 [According to the roadmap, becoming optionally mutable is a planned change.] Thank you for picking up that oversight/underlook. On Tuesday, July 12, 2016 at 10:12:59 AM UTC-4, jw3126 wrote: > > I think FixedSizeArrays are immuta

[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

On Tuesday, July 12, 2016 at 5:57:27 AM UTC-7, Andreas Lobinger wrote: > > just my two cents... > > On Tuesday, July 12, 2016 at 5:28:24 AM UTC+2, Chris Rackauckas wrote: >> >> >> MATLAB really improved their JIT in 2015b, but as you can see, it cannot >> come close to Julia. The main reason is th

[julia-users] How to determine the type of a complex data structure

Hi, I have a this kind of data structure : type Ions_frag{} mz::Float64 intensity::Float64 charge::Int64 end I read in performance tips that it is better to define the type of the data structure but I cannot find the good one for my data structure. I tried : type Ions_frag{DataType}

Re: [julia-users] How to determine the type of a complex data structure

On Tue, Jul 12, 2016 at 10:56 AM, Fred wrote: > Hi, > > I have a this kind of data structure : > > type Ions_frag{} > mz::Float64 > intensity::Float64 > charge::Int64 > end > > > I read in performance tips that it is better to define the type of the data Which one are you referring to? > s

Re: [julia-users] How to determine the type of a complex data structure

I am referring to all 3, ie the type of Ions_frag :) Initially I used : type Ions_frag mz::Float64 intensity::Float64 charge::Int64 end and it works. But, after reading the documentation I "understood" that it is not optimal in performances. Le mardi 12 juillet 2016 16:59:57 UTC+2, Y

Re: [julia-users] How to determine the type of a complex data structure

On Tue, Jul 12, 2016 at 11:10 AM, Fred wrote: > I am referring to all 3, ie the type of Ions_frag :) Well, can you quote the performance tip? There's nothing wrong with the type you are using in terms of performance so I'd like to know which part of the doc is misleading. > Initially I used : >

Re: [julia-users] How to determine the type of a complex data structure

You may be misreading the guidance. There is no advantage to putting a parameter into the type when that parameter is not used anywhere. type Ions_frag mz::Float64 intensity::Float64 charge::Int64 end if your use involves changing the fields' values after creating an ions_frag typed

[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

Ferran, I can totally understand Fortran is still the king of fast and efficient numerical calculation in terms of computation time and memory usage. As to "fast", I am comparing Julia main to high-level languages like Python, R, and Matlab which offers similar level of fast prototyping. Since

Re: [julia-users] How to determine the type of a complex data structure

I use a dictionary to store values : for example : d = Dict() d["key1"] = Ions_frag(501.5, 1500, 3) Then to obtain the values : d["key1"].mz # = 501.5 My problem was to store many values in one object. So I found this solution, I don't know if it is the best and I hope this approach is corr

Re: [julia-users] How to determine the type of a complex data structure

I tried that "change" because of this part of the documentation (in http://docs.julialang.org/en/release-0.4/manual/performance-tips/) : For example: julia> type MyType{T<:AbstractFloat} a::T end This is a better choice than julia> type MyStillAmbiguousType a::AbstractF

Re: [julia-users] How to determine the type of a complex data structure

On Tue, Jul 12, 2016 at 12:23 PM, Fred wrote: > I tried that "change" because of this part of the documentation (in > http://docs.julialang.org/en/release-0.4/manual/performance-tips/) : > > For example: > > julia> type MyType{T<:AbstractFloat} > a::T >end > This is a better choic

Re: [julia-users] How to determine the type of a complex data structure

What might be missing is to note the important difference between abstract and concrete types. Otherwise it might indeed be interpreted as advice to use curly-brackets in your type definitions. Best, --Tim On Tuesday, July 12, 2016 12:36:28 PM CDT Yichao Yu wrote: > On Tue, Jul 12, 2016 at 12:2

Re: [julia-users] Re: PriorityQueue for fast large network simulation

Is it possible to set up a priority queue with integer keys instead? > Yes. > julia> pq=Collections.PriorityQueue() > Base.Collections.PriorityQueue{Any,Any,Base.Order.ForwardOrdering} with 0 > entries > > julia> pq[1]=10;pq[2]=5;pq[3]=20; > Sorry, I wasn't clear. What I meant to say: Profiling i

[julia-users] Re: ANN: New Julia Packages website

Hi Adrian, nice website! What I'd like to have in a Julia packages website is categories. This would greatly enhances the possibilities for the users to find the package they're looking for. Currently one must use search strings, but they may not be very effective if the package author didn'

Re: [julia-users] Re: PriorityQueue for fast large network simulation

> > For efficiency, you probably want a typed version: > > julia> Base.Collections.PriorityQueue(Int, Int) > Base.Collections.PriorityQueue{Int64,Int64,Base.Order.ForwardOrdering} > with 0 entries > I used Uint32 as keys to save memory. (phi = Collections.PriorityQueue(UInt32,Float64) ). Are Int64

[julia-users] Does the Julia has goto?

I search docs and I did not find any information how to use it but there is some example code with goto. So, does the Julia has goto?

Re: [julia-users] Does the Julia has goto?

It's basically: @label goto_label then later. @goto goto_label Should probably have some docs though. On Tue, Jul 12, 2016 at 6:16 AM, vasili111 wrote: > I search docs and I did not find any information how to use it but there > is some example code with goto. So, does the Julia has goto? >

[julia-users] Want: "Deprecation" badge for Github

Our Julia projects live on Github, and many projects proudly present badges for Travis, Appveyor, Codecov, and probably a few more. TL;DR: There should be a badge for "no compatibility warnings" as well. In the past weeks, Julia 0.5 deprecated a certain number of features. These continue to work f

Re: [julia-users] Re: PriorityQueue for fast large network simulation

Broadly speaking, UInt32 is faster than UInt64, Int32 is faster than Int64 and Julia tends to use the signed ints when it means integer values. Your application may be happier with the use of ako (possibly augmented) tree instead of a priority queue. You get very fast index or weight or priorit

Re: [julia-users] Re: PriorityQueue for fast large network simulation

Keno's AbstractTrees is very helpful in understanding tree-think. On Tuesday, July 12, 2016 at 1:17:25 PM UTC-4, Jeffrey Sarnoff wrote: > > Broadly speaking, UInt32 is faster than UInt64, Int32 is faster than Int64 > and Julia tends to use the signed in

Re: [julia-users] How to determine the type of a complex data structure

Thank you very much Yichao, Tim and Jeffrey for your answers ! I try to summarize. If I understand well, this type definition is correct and gives the maximum performances : type Ions_frag mz::Float64 intensity::Float64 charge::Int64 end But if I use : d = Dict() d["key1"] = Ions_f

Re: [julia-users] How to determine the type of a complex data structure

On Tue, Jul 12, 2016 at 1:21 PM, Fred wrote: > Thank you very much Yichao, Tim and Jeffrey for your answers ! > > I try to summarize. If I understand well, this type definition is correct > and gives the maximum performances : It is the best for performance in terms of the field types. If you rep

[julia-users] [ANN] Plots ecosystem

Hi everyone. I wanted to let you know about some changes that are happening with the soon-to-be-tagged 0.8 version of Plots. In an attempt to organize the ecosystem and thin out the core of Plots, there are a few relatively new packages, all within the JuliaPlots organization: PlotUtils.jl: Gene

Re: [julia-users] How to determine the type of a complex data structure

Thank you very much Yichao, I will try : Dict{Any,Ions_frag} and immutable Ions_frag mz::Float64 intensity::Float64 charge::Int64 end

[julia-users] Re: Want: "Deprecation" badge for Github

+1 quell the ASCII noise [some find the unexpected TTY spew quite scary] and .. how does one stop those messages, or have the badges 'leveled up'? On Tuesday, July 12, 2016 at 1:15:24 PM UTC-4, Erik Schnetter wrote: > > Our Julia projects live on Github, and many projects proudly present > badg

[julia-users] Calling all users of ParallelAccelerator.

Hello, I'm one of the developers of the Intel ParallelAccelerator package for Julia. https://github.com/IntelLabs/ParallelAccelerator.jl Now that the package has been out for a while, I'd like to poll the user community. 1) Who has used the package to accelerate some real application that

[julia-users] Re: Want: "Deprecation" badge for Github

+1 There was also a suggestion at JuliaCon the badge could count the number of warnings displayed - perhaps, this would give some incentive for progressive cleanup/levelingup of code. On Tuesday, July 12, 2016 at 1:15:24 PM UTC-4, Erik Schnetter wrote: > > Our Julia projects live on Github, and

[julia-users] Re: Want: "Deprecation" badge for Github

Perhaps related: https://dependencyci.com/ I like the other suggestions in the thread. On Tuesday, July 12, 2016 at 1:15:24 PM UTC-4, Erik Schnetter wrote: > > Our Julia projects live on Github, and many projects proudly present > badges for Travis, Appveyor, Codecov, and probably a few more. TL;

Re: [julia-users] Re: Julia ccall windows

OK, if it's a normal Windows socket you may be able to use Libc.WindowsRawSocket instead of an integer type. It seems to be an unsigned 64 bit integer on 64bit Windows, which may be why you got the change in value. On Tue, Jul 12, 2016 at 3:12 PM Karli Kund wrote: > In .h file it says "#define S

[julia-users] Type error check before code starts running?

One big problem of dynamically typed languages is type mismatch errors only pop up at run time. When I say "type mismatch" I refer to the case when the compiler/interpreter cannot reasonably guess a conversion, therefore e.g. assigning an integer value to a double variable does not count. It'll

Re: [julia-users] Re: PriorityQueue for fast large network simulation

2016-07-12 19:17 GMT+02:00 Jeffrey Sarnoff : > Broadly speaking, UInt32 is faster than UInt64, Int32 is faster than Int64 > and Julia tends to use the signed ints when it means integer values. > Thanks, I didn't know that. Is there a way to make the dictionary underlying the PriorityQueue also use

Re: [julia-users] Type error check before code starts running?

On Tue, Jul 12, 2016 at 7:09 PM, Zhong Pan wrote: > One big problem of dynamically typed languages is type mismatch errors only > pop up at run time. When I say "type mismatch" I refer to the case when the > compiler/interpreter cannot reasonably guess a conversion, therefore e.g. > assigning an i

[julia-users] Re: Type error check before code starts running?

You may want to check out Lint.jl https://github.com/tonyhffong/Lint.jl On Wednesday, 13 July 2016 00:09:36 UTC+1, Zhong Pan wrote: > > One big problem of dynamically typed languages is type mismatch errors > only pop up at run time. When I say "type mismatch" I refer to the case > when the comp

[julia-users] Re: Calling all users of ParallelAccelerator.

Thank you Todd, thank you Intel. The Black-Scholes example helped me understand this capability. I am pleased it continues to be developed, and that it becomes better still when released for v0.5. On Tuesday, July 12, 2016 at 4:23:05 PM UTC-4, Todd Anderson wrote: > > Hello, > > I'm one of

[julia-users] ANN: Algebraic numbers

Ever wanted to do exact arithmetic, geometry, and so on? Well now you can: https://github.com/anj1/AlgebraicNumbers.jl

Re: [julia-users] Type error check before code starts running?

What Yichao said is fundamental to Julia: there is no, none, not any, nothing the compiler does that would construct intermediate code that introduces a type mismatch. If your source does not operate on mismatched types, they will not "bubble up" in compilation. A method determination ambig

[julia-users] Re: ANN: Algebraic numbers

(another good use of Nemo!) On Tuesday, July 12, 2016 at 8:21:18 PM UTC-4, Alireza Nejati wrote: > > Ever wanted to do exact arithmetic, geometry, and so on? Well now you can: > > https://github.com/anj1/AlgebraicNumbers.jl >

[julia-users] Re: ANN: Algebraic numbers

Indeed! Hecke.jl also has some similar abilities. On Wednesday, July 13, 2016 at 12:29:28 PM UTC+12, Jeffrey Sarnoff wrote: > > (another good use of Nemo!) > > On Tuesday, July 12, 2016 at 8:21:18 PM UTC-4, Alireza Nejati wrote: >> >> Ever wanted to do exact arithmetic, geometry, and so on? Well

[julia-users] Re: ANN: Algebraic numbers

(in your README examples, this line does balks: x = 1 + sqrt6) On Tuesday, July 12, 2016 at 8:34:38 PM UTC-4, Alireza Nejati wrote: > > Indeed! > > Hecke.jl also has some similar abilities. > > On Wednesday, July 13, 2016 at 12:29:28 PM UTC+12, Jeffrey Sarnoff wrote: >> >> (another good use of Nem

[julia-users] Any suggested mono font for julia with unicode?

I find that some mono fonts doesn't display distinguishable greek letters in unicode. Any suggested mono font for julia with unicode?

[julia-users] Re: Any suggested mono font for julia with unicode?

Source Code Pro is better than the default https://github.com/adobe-fonts/source-code-pro To get more symbols than are provided in that font, ... On Tuesday, July 12, 2016 at 8:43:55 PM UTC-4, Po Choi wrote: > > I find that some mono fonts doesn't display distinguishable greek letters > in u

[julia-users] Re: Any suggested mono font for julia with unicode?

DejaVu Sans Mono has many more math symbols and more arrows than Source Code Pro http://dejavu-fonts.org/wiki/Main_Page http://dejavu-fonts.org/wiki/Download On Tuesday, July 12, 2016 at 8:52:17 PM UTC-4, Jeffrey Sarnoff wrote: > > Source Code Pro is better than the default > https://github

[julia-users] Package Structure for Conditional Dependencies

Hey, I wanted to look more into using conditional dependencies, and am looking for insight from both developers who have done this successfully and feedback from users on what is more intuitive. Just so we're all on the same page, a conditional dependency is a package which your package do

[julia-users] Re: Type error check before code starts running?

Thanks for the suggested methods (@code_warntype and lint). I had experience with lint in Python and I liked it. My original question may be misleading - I didn't mean to infer the Julia compiler may cause type mismatch problem whether type conversion is involved or not. What I meant is the pro

[julia-users] Re: Package Structure for Conditional Dependencies

That is a relevant question. It must do the simple stuff simply. @maybeUse("Meade") # which might expand to requires("Meade") && include( full_path("Meade.jl") ) On Tuesday, July 12, 2016 at 11:40:05 PM UTC-4, Chris Rackauckas wrote: > > Hey, > I want

[julia-users] Re: A Very Simple Benchmark for Brutal-force Loops in Several Languages: revised, Julia is fast!

Zong, we would be pleased to increment the tally of Julia users with your use. On Tuesday, July 12, 2016 at 12:00:02 PM UTC-4, Zhong Pan wrote: > > Ferran, > > I can totally understand Fortran is still the king of fast and efficient > numerical calculation in terms of computation time and memory

Re: [julia-users] Re: Julia ccall windows

What dose this mean? I try to google Libc.WindowsRawSocke Julia, but nothing. How I can use that library? keskiviikko 13. heinäkuuta 2016 0.05.23 UTC+3 Bart Janssens kirjoitti: > > OK, if it's a normal Windows socket you may be able to use > Libc.WindowsRawSocket instead of an integer type. It