21-25 March 2022
Academia Sinica
Europe/Zurich timezone

Running Fermi-LAT analysis on Cloud: the experience with DODAS with EGI-ACE Project

Mar 23, 2022, 11:20 AM
Room 2

Room 2

Oral Presentation Track 8: Infrastructure Clouds and Virtualizations Infrastructure Clouds and Virtualisation


Dr Isabella Mereu (INFN Perugia)


The Fermi-LAT long-term Transient (FLT) monitoring aim is the routine search of gamma-ray sources on monthly time intervals of Fermi-LAT data.

The FLT analysis consists of two steps: first the monthly data sets were analyzed using a wavelet-based source detection algorithm that provided the candidate new transient sources; finally these transient candidates were analyzed using the standard Fermi-LAT maximum likelihood analysis method. Only sources with a statistical significance above 4σ in at least one monthly bin were listed in a catalog.
The strategy adopted to implement the maximum likelihood analysis pipeline has been based on cloud solutions adopting the Dynamic On Demand Analysis Service (DODAS) service as technology enabler. DODAS represents a solution to transparently exploit cloud computing with almost zero effort for a user community.
This contribute will detail the technical implementation providing the point of view of the user community.

Primary authors

Cristina Duma (INFN-CNAF) Daniele Spiga (INFN Perugia) Diego Ciangottini (INFN Perugia) Dr Isabella Mereu (INFN Perugia) Luciano Gaido (INFN Torino) Marica Antonacci (INFN Bari) Dr Sara Cutini (INFN Perugia) Stefano Nicotri (INFN Bari)

Presentation materials