JUSTUS2/Software/Julia

The main documentation is available via module help math/julia on the cluster. Most software modules for applications provide working example batch scripts.

Description	Content
module load	math/julia
Availability	bwUniCluster | JUSTUS2
License	MIT License
Citing	[1]
Links	Project homepage | Documentationn]
Graphical Interface	No

Introduction

Julia is a high-level, high-performance, dynamic programming language, being designed with scientific computing in mind. Parallel programming features, such as multi-threading are included in the core language, while there also exit packages leveraging the power of MPI and CUDA.

Interactive Example

Load Julia module and start interactive REPL session with 8 threads, using the environment in the current directory:

$ module load math/julia
$ julia -t 8 --project=.

Enter ']' to go into package manager and install package UnicodePlots.

add UnicodePlots

Leave the package manager with the backspace key.

Create an vector with 64 elements set to 0 and fill it using all threads with the corresponding tread id number.

vec = zeros(64)
Threads.@threads for i in eachindex(vec)
    vec[i]= Threads.threadid()
end

Load the UnicodePlots package and draw a scatter plot of the contents of vec

using UnicodePlots
scatterplot(vec)

Further documentation

• Julia Workshop at HLRS: The material of this workshop is in large parts also valid for the Justus cluster (on Justus you only need the module math/julia).