Aug 28 – 30, 2024
BC Building, Swiss Federal Institute of Technology Lausanne (EPFL)
Europe/Zurich timezone

High-Time Resolution GPU Imager for FRB searches at low radio frequencies

Aug 29, 2024, 4:10 PM
20m
BC01 (level 0) (BC Building, Swiss Federal Institute of Technology Lausanne (EPFL))

BC01 (level 0)

BC Building, Swiss Federal Institute of Technology Lausanne (EPFL)

Rte Cantonale, 1015 Lausanne, Switzerland
Presentation Pulsars and Fast Transients (PFT) Pulsars and Fast Transients

Speaker

Marcin Sokolowski (Curtin University)

Description

Fast Radio Bursts (FRBs) are millisecond dispersed radio pulses of predominately extra-galactic origin. Despite hundreds of FRBs discovered at frequencies above 400 MHz, only a few were discovered below 400 MHz. One of the reasons is computational complexity of low-frequency FRB searches over wide fields of view (hundreds or thousands of square degrees) and long dispersion delays (of the order of tens of seconds). I will present a recently developed imaging software BLINK utilising modern Graphical Processing Units (GPUs), which is intended to address some of these issue. The primary target instruments are the MWA and SKA-Low prototype station EDA2. BLINK imager can be compiled in either NVIDIA or AMD GPU programming frameworks on HPC or server/desktop architectures. It is intended to become a part of a GPU-based processing pipeline, which will correlate voltages recorded by a telescope (in real-time or off-line), apply calibration, form images and perform FRB and transient searches. The software will be executed entirely on GPU in order to minimise I/O operations and copying memory to and from the GPU. Hopefully, this work will enable first ever detections of low-frequency FRBs with the SKA-Low precursors in the Southern Hemisphere!

Timeslot preferences 15min

Primary authors

Dr Christopher Harris (Pawsey Supercomputing Research Centre) Mr Cristian Di Pietrantonio (Curtin University, Pawsey Supercomputing Research Centre,) Danny Price (ICRAR/Curtin) Marcin Sokolowski (Curtin University) Ramesh Bhat (Dr) Randall Wayth (ICRAR-Curtin) Sam McSweeney (CIRA, Curtin University)

Presentation materials