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Release 6.11/02 - 2017-10-06


This is a development release. We created it to expose to users part of the enourmous amount of new functionalities which have been integrated in ROOT and will be available in ROOT 6.12/00. These are some of the highlights of the new features you can find in ROOT 6.11/02:

  • Even more endemic parallelism - Among the many things, a parallelised hadd (hadd -j) and a parallel enabled prompt: just try it root -t!
  • An enhanced TDataFrame. Now it's possible to cache datasets in memory, to create readers for any data format (not just ROOT) thanks to the new TDataSource interface, much faster type inference via an improved jitting, a plethora of new options for saving datasets on disk.
  • The LZ4 compression algorithm can be now used for faster reading and writing.
  • Writing files in parallel with TBufferMerger has become much faster and scalable.

Source distribution

Platform Files Size
source root_v6.11.02.source.tar.gz 153M

Binary distributions

Note that no binary distribution for XCode9 is available at the moment. In that case, ROOT can be built from sources starting from the tarball above.

Platform Files Size
CentOS Cern 7 gcc4.8 root_v6.11.02.Linux-centos7-x86_64-gcc4.8.tar.gz 130M
Linux fedora22 gcc5.3 root_v6.11.02.Linux-fedora22-x86_64-gcc5.3.tar.gz 117M
Ubuntu 16 gcc5.4 root_v6.11.02.Linux-ubuntu16-x86_64-gcc5.4.tar.gz 117M
OsX 10.11 clang80 root_v6.11.02.macosx64-10.11-clang80.dmg 116M
OsX 10.11 clang80 root_v6.11.02.macosx64-10.11-clang80.tar.gz 116M
OsX 10.12 clang81 root_v6.11.02.macosx64-10.12-clang81.dmg 119M
OsX 10.12 clang81 root_v6.11.02.macosx64-10.12-clang81.tar.gz 119M

Installations in CVMFS

Standalone installations with minimal external dependencies are available at:


Example for setting up ROOT and the corresponding compiler from CVMFS on LXPLUS7

. /cvmfs/