FYI: Julia for Linux on 'Bash for Windows'


#1

Since Windows 10 1703 (Creators Update, available since April 6th 2017 or so) ,the Windows-Subsystem-Linux (WSL) provides the opportunity to use a fully featured Linux environment natively on Windows. Although in principle available since roughly two years, the Creators Update resolves the previously lacking symbolic links capability on Windows and allows an update to Ubuntu Xenial 16.04.

Consequently, one may also choose to run the Linux version of Julia on Windows, potentially giving a richer development experience.

Note that WSL is not a virtual machine; the Linux kernel functions are directly mapped to the Windows kernel, thereby allowing essentially any native Linux binary to be directly run on Windows – as long as it doesn’t require X windows. Luckily, Julia has an excellent REPL for the terminal.

Take a look at the detailed description of Bash on Ubuntu on Windows (Microsoft Developer Network)

Make it so…

Requirements

  • Windows 10 (64-bit) version 1703 (Creators Update) or newer, and
  • Local administrator priviledges to install Bash on Windows, or
  • already installed Bash on Windows with Ubuntu Xenial 16.04 or newer.

Installation

  1. Follow the Installation Guide of Bash on Windows.

  2. Verify that you have Ubuntu Xenial 16.04 installed by opening Bash on Windows from the start menu and type

    user@host:~$ cat /etc/lsb-release
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=16.04
    DISTRIB_CODENAME=xenial
    DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
    

    If you have an older release, type do-release-upgrade and follow the instructions.

  3. Download and extract the Julia archive to your user’s home directory, here we choose the Generic Linux Binaries of Julia 0.5.1:

    user@host:~$ cd ~
    user@host:~$ sudo apt get wget
    user@host:~$ wget https://julialang.s3.amazonaws.com/bin/linux/x64/0.5/julia-0.5.1-linux-x86_64.tar.gz
    user@host:~$ tar xzvf julia-0.5.1-linux-x86_64.tar.gz
    

Energize…

There should now be a subdirectory starting with julia- and followed by the Git commit hash of the release. Here, we assume this exact directory name is julia-6445c82d00.

user@host:~$ ls -d julia-*
julia-0.5.1-linux-x86_64.tar.gz*  julia-6445c82d00/

Now it’s time to start the Julia REPL

user@host:~$ julia-6445c82d00/bin/julia

and see the magic happen:

               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.5.1 (2017-03-05 13:25 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-pc-linux-gnu

julia> peakflops()
1.9908520348996365e10

julia> versioninfo()
Julia Version 0.5.1
Commit 6445c82 (2017-03-05 13:25 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU:        Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1 (ORCJIT, sandybridge)

julia> 1+2
3

julia>

Hit <CTRL>+D to exit Julia.

Engage…

To make sure everything is alright, let’s run the full Julia test suite.
Unfortunately, there seems to be some issue regarding multi-threading, so
lets fall back to single core:

help?> Base.runtests
  runtests([tests=["all"] [, numcores=ceil(Integer, Sys.CPU_CORES / 2) ]])

  Run the Julia unit tests listed in tests, which can be either a string or
  an array of strings, using numcores processors. (not exported)

julia> Base.runtests("all", 0)
     * linalg/triangular     in 343.51 seconds, maxrss  637.77 MB
     * linalg/qr             in  61.01 seconds, maxrss  749.48 MB
     * linalg/dense          in  31.24 seconds, maxrss  784.41 MB
     * linalg/matmul         in 125.35 seconds, maxrss  852.55 MB
     * linalg/schur          in   6.61 seconds, maxrss  862.48 MB
     * linalg/special        in   2.57 seconds, maxrss  869.45 MB
     * linalg/eigen          in  26.10 seconds, maxrss  880.37 MB
     * linalg/bunchkaufman   in  18.99 seconds, maxrss  887.07 MB
     * linalg/svd            in  11.31 seconds, maxrss  898.15 MB
     * linalg/lapack         in  30.40 seconds, maxrss  907.11 MB
     * linalg/tridiag        in  23.49 seconds, maxrss  907.44 MB
     * linalg/bidiag         in  22.15 seconds, maxrss  921.24 MB
     * linalg/diagonal       in  32.28 seconds, maxrss  928.46 MB
     * linalg/pinv           in   6.56 seconds, maxrss 1014.12 MB
     * linalg/givens         in   5.54 seconds, maxrss 1014.12 MB
     * linalg/cholesky       in  22.80 seconds, maxrss 1014.12 MB
     * linalg/lu             in  24.52 seconds, maxrss 1014.12 MB
     * linalg/symmetric      in  11.90 seconds, maxrss 1014.12 MB
     * linalg/generic        in   7.63 seconds, maxrss 1014.23 MB
     * linalg/uniformscaling in  34.96 seconds, maxrss 1017.74 MB
     * linalg/lq             in  43.18 seconds, maxrss 1048.18 MB
     * linalg/hessenberg     in   0.89 seconds, maxrss 1048.48 MB
     * linalg/arnoldi        in  30.30 seconds, maxrss 1052.84 MB
     * subarray              in 391.72 seconds, maxrss 1402.90 MB
     * core                  in  70.38 seconds, maxrss 2548.99 MB
     * inference             in   0.97 seconds, maxrss 2548.99 MB
     * keywordargs           in   2.10 seconds, maxrss 2548.99 MB
     * numbers               in 136.61 seconds, maxrss 2548.99 MB
     * printf                in  19.77 seconds, maxrss 2548.99 MB
     * char                  in   1.58 seconds, maxrss 2548.99 MB
     * string                in  27.48 seconds, maxrss 2548.99 MB
     * triplequote           in   0.03 seconds, maxrss 2548.99 MB
     * unicode               in   5.13 seconds, maxrss 2548.99 MB
     * dates                 in  54.40 seconds, maxrss 2548.99 MB
     * dict                  in  15.71 seconds, maxrss 2548.99 MB
     * hashing               in   6.90 seconds, maxrss 2548.99 MB
     * iobuffer              in   1.10 seconds, maxrss 2548.99 MB
     * staged                in   1.71 seconds, maxrss 2548.99 MB
     * offsetarray           in  99.84 seconds, maxrss 2548.99 MB
     * arrayops              in  48.48 seconds, maxrss 2548.99 MB
     * tuple                 in   2.51 seconds, maxrss 2548.99 MB
     * reduce                in   4.98 seconds, maxrss 2548.99 MB
     * reducedim             in  16.75 seconds, maxrss 2548.99 MB
     * random                in  14.81 seconds, maxrss 2548.99 MB
     * abstractarray         in 129.88 seconds, maxrss 2548.99 MB
     * intfuncs              in   1.36 seconds, maxrss 2548.99 MB
     * simdloop              in   1.77 seconds, maxrss 2548.99 MB
     * vecelement            in   2.76 seconds, maxrss 2548.99 MB
     * blas                  in  40.38 seconds, maxrss 2548.99 MB
     * sparse                in 362.34 seconds, maxrss 2548.99 MB
     * bitarray              in 669.47 seconds, maxrss 2548.99 MB
     * copy                  in   2.11 seconds, maxrss 2548.99 MB
     * math                  in  52.24 seconds, maxrss 2548.99 MB
     * fastmath              in   3.75 seconds, maxrss 2548.99 MB
     * functional            in  36.97 seconds, maxrss 2548.99 MB
     * operators             in   0.66 seconds, maxrss 2548.99 MB
     * path                  in   5.38 seconds, maxrss 2548.99 MB
     * ccall                 in   7.28 seconds, maxrss 2548.99 MB
     * parse                 in   3.61 seconds, maxrss 2548.99 MB
     * loading               in   0.12 seconds, maxrss 2548.99 MB
     * bigint                in   5.41 seconds, maxrss 2548.99 MB
     * bigfloat              in   0.14 seconds, maxrss 2548.99 MB
     * sorting               in  45.76 seconds, maxrss 2548.99 MB
     * statistics            in   8.42 seconds, maxrss 2548.99 MB
     * spawn                       [stdio passthrough ok]
Test Failed
  Expression: run(@cmd("foo_is_not_a_valid_command"))
    Expected: Base.UVError
      Thrown: ErrorException
ERROR: LoadError: LoadError: There was an error during testing
 in record(::Base.Test.FallbackTestSet, ::Base.Test.Fail) at test.jl:397
 in do_test_throws(::Base.Test.Threw, ::Expr, ::Type{T}) at test.jl:329
 in include_from_node1(::String) at loading.jl:488
 in macro expansion at util.jl:230 [inlined]

Well, not exactly super fast on a 2nd gen mobile Core i5, and certainly libuv requires some patches, but still:

Quod erat demonstrandum.


#2

Can confirm - got Julia v.0.6 on Window’s Bash.
Brrr…


#3

I just wish they would fix this bug, so that one can compile julia in bash, but use a normal editor on windows to edit files…