Warning

Iceberg was decommissioned on 30th November 2020. Users of Iceberg need to switch to using ShARC and/or Bessemer instead.

Julia¶

Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments.

Interactive Usage¶

After connecting to iceberg (see Establishing a SSH connection), start an interactive session with either the or qrsh or qrshx commands.

The latest version of Julia (currently 0.5.0-rc3) is made available with the commands

module load compilers/gcc/5.2
module load apps/gcc/5.2/julia/0.5.0-rc3

This adds Julia to your PATH and also loads the gcc 5.2 compiler environment with which Julia was built.

Start Julia by executing the command

julia

You can exit a Julia session with the quit() function.

Installation notes¶

These are primarily for administrators of the system.

Julia was installed using gcc 5.2

module load apps/gcc/5.2/git/2.5
module load compilers/gcc/5.2
module load apps/python/anaconda2-2.5.0

git clone git://github.com/JuliaLang/julia.git
cd julia
git checkout release-0.5
#The next line targets the NEHALEM CPU architecture. This is the lowest architecture available on
#Iceberg and so the resulting binary will be supported on all nodes. Performance will not be as good as it
#could be on modern nodes.
sed -i s/OPENBLAS_TARGET_ARCH:=/OPENBLAS_TARGET_ARCH:=NEHALEM/ ./Make.inc
make

Module File¶

The module file is as below

#%Module10.2####################################################################
#

## Module file logging
source /usr/local/etc/module_logging.tcl
##

proc ModulesHelp { } {
        global ver

        puts stderr "   Adds Julia $ver to your environment variables."
}

# Mathematica version (not in the user's environment)
set     ver     0.5.0-rc3

module-whatis   "sets the necessary Julia $ver paths"

prepend-path PATH /usr/local/packages6/apps/gcc/5.2/julia/0.5.0-rc3