Speaker
Gerardo GANIS
(CERN)
Description
PROOF-Lite is an implementation of the Parallel ROOT Facility (PROOF)
optimized for many-core machines. It gives ROOT users a straight-forward
way to exploit the many-cores by using them all in parallel for a data
analysis or generic computing task controlled via the ROOT TSelector
mechanism.
PROOF-Lite is, as the name suggests, a lite version of PROOF, where the
multi-tier architecture has been reduced to a 2-tier one, with the local
ROOT client directly interacting with the PROOF workers. By default one
gets as many workers as available cores.
To improve performance as much as possible, PROOF-Lite uses local communication
technologies as unix-sockets, shared memory and memory mapped files.
PROOF-Lite is a zero-config technology and does not require pre-installation
of daemons and config files, it comes as an integral part of ROOT.
In this talk we will show how almost perfect scalability is achieved
for CPU intensive tasks and how the scalability is limited to the disk
resources for I/O intensive tasks. We will also show the huge improvements
the new SSD (Solid State Disk) technology brings and how it can be used to
achieve almost perfect scalability also for I/O intensive tasks.
| Presentation type (oral | poster) | oral |
|---|
