We continue to review all events currently planned for the next sixty days and organizers will be notified if their event must be canceled, postponed, or held remotely. Please, check back on Indico during this time for updates regarding your meeting specifics.
As DOE O 142.3A, Unclassified Foreign Visits and Assignments Program (FVA) applies not only to physical access to DOE sites, technologies, and equipment, but also information, all remote events hosted by Fermilab must comply with FVA requirements. This includes participant registration and agenda review. Please contact Melissa Ormond, FVA Manager, with any questions.

----

ZOOM meetings Lab policy: You absolutely must not post Zoom meeting IDs on any public website unless you set a password to protect the meeting/event. Of course, do not post the password on any public website, either.
For details please refer to the news article https://news.fnal.gov/2020/03/zoom-tips-to-keep-your-meetings-secure/ Zoom information should be either given on email request or stored on a SharePoint page behind SSO".

----

Indico search will be reestablished in the next version upgrade of the software: https://getindico.io/roadmap/


   

This search is only for public events. Restricted events are not available.

 

July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

GPUs in LHCb for Analysis

Aug 3, 2017, 11:07 AM
22m
Hornets Nest (Fermi National Accelerator Laboratory)

Hornets Nest

Fermi National Accelerator Laboratory

Presentation Computing, Analysis Tools and Data Handling Computing, Analysis Tools, and Data Handling

Speaker

Dr Henry Schreiner (LHCb)

Description

Datasets with millions of events in charm decays at LHCb have prompted the development of powerful fitting and analysis tools capable of handling unbinned datasets using GPUs and multithreaded architectures. GooFit, the original GPU fitting program with a familiar syntax resembling classic RooFit, has undergone significant redesign and has expanded physics and computing capabilities. The performance has been improved and tested on a variety of systems. GooFit 2.0 is easier than ever to install, develop, and use on any system. A new templated header-only library, Hydra, provides highly optimized general framework for fits, Monte Carlo generation, integration, and more. The design and benefits of this system along with initial tests will be shown. Finally, a model-independent search for direct CP violation using an unbinned approach called an energy test was performed directly using the Thrust library (which both of the previous packages are based on). Public results from this analysis and performance comparisons will be presented.

Primary authors

Dr Henry Schreiner (LHCb) Dr Marco Gersabeck (The University of Manchester) Prof. Michael Sokoloff (University of Cincinnati)

Presentation Materials