Release 6.13/02 - 2018-03-20


  • LZ4 is now the default compression format, accelerating reading by factors; see e.g. this presentation
  • New graphics style “ATLAS” - thanks, ATLAS!
  • Auto-coloring for TF1 (drawing options PFC, PLC and PMC)
  • New color palette “cividis” compatible with color vision deficiency
  • Memory footprint reduction and a faster ROOT due to reduced reading of its PCH
  • Improved performance of parallelised operations - thread safety has been enhanced with a read-write lock, also reducing contention during gROOT and TObject destructions.
  • I/O support for std::vector with custom allocator.
  • C++17 support: you can enable it with the “-Dcxx17=ON” cmake option
  • Added templated version TBuffer::WriteObject
  • Implement reading of objects data from JSON; new TBufferJSON::ToJSON() and TBufferJSON::FromJSON() methods
  • New ROOT::Experimental::TVec allows to spell operations on vector elements without loops, also in TDataFrame

Source distribution

Platform Files Size
source root_v6.13.02.source.tar.gz 155M

Binary distributions

Platform Files Size
CentOS Cern 7 gcc4.8 root_v6.13.02.Linux-centos7-x86_64-gcc4.8.tar.gz 134M
Linux fedora26 gcc7.2 root_v6.13.02.Linux-fedora26-x86_64-gcc7.2.tar.gz 122M
Linux fedora27 gcc7.2 root_v6.13.02.Linux-fedora27-x86_64-gcc7.2.tar.gz 122M
Ubuntu 14 gcc4.8 root_v6.13.02.Linux-ubuntu14-x86_64-gcc4.8.tar.gz 120M
Ubuntu 16 gcc5.4 root_v6.13.02.Linux-ubuntu16-x86_64-gcc5.4.tar.gz 121M
Ubuntu 17 gcc7.2 root_v6.13.02.Linux-ubuntu17-x86_64-gcc7.2.tar.gz 127M
OsX 10.12 clang90 root_v6.13.02.macosx64-10.12-clang90.dmg 125M
OsX 10.12 clang90 root_v6.13.02.macosx64-10.12-clang90.tar.gz 126M
OsX 10.13 clang90 root_v6.13.02.macosx64-10.13-clang90.dmg 125M
OsX 10.13 clang90 root_v6.13.02.macosx64-10.13-clang90.tar.gz 126M

Installations in CVMFS

Standalone installations with minimal external dependencies are available at:


Example for setting up ROOT and the corresponding compiler from CVMFS

. /cvmfs/


The entire ROOT source can be obtained from our public Git repository:

git clone

The release specific tag can be obtained using:

cd root
git checkout -b v6-13-02 v6-13-02