BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:In-situ visualization of AMR datasets with ParaView Catalyst and I
 ntel OSPRay -  (University of Cambridge)
DTSTART:20221020T120000Z
DTEND:20221020T130000Z
UID:TALK180317@talks.cam.ac.uk
CONTACT:Chris Richardson
DESCRIPTION:With the recent arrival of exascale HPC systems and the expect
 ation of more to come\, there is a pressing need to develop new methodolog
 ies in order to exploit their potential. Until recently the dominant appro
 ach to visualisation and analysis of outputs from scientific simulations h
 as been post-hoc processing where data saved to disks during the simulatio
 n is loaded back into memory and processed accordingly. Unfortunately\, th
 e I/O bandwidth and capacity of HPC file systems have not kept up with the
  increase in processing power meaning that it is becoming more impractical
  to continue the current post-processing paradigm for the largest simulati
 on datasets. The alternative approach of in-situ processing\, where data i
 s processed during the simulation\, is becoming more widespread but there 
 is still significant development required in order to bring these in-situ 
 frameworks up to scratch with that of post-processing ones. In collaborati
 on with Intel\, we have been developing an in-situ visualization capabilit
 y for the Adaptive Mesh Refinement (AMR) numerical relativity code GRChomb
 o using ParaView Catalyst. ParaView uses Intel’s OSPRay library in order
  to perform ray-tracing for volume rendering. Currently\, OSPRay’s suppo
 rt for AMR datasets that are MPI-distributed is limited which means that w
 orkarounds need to be applied in order to use it in-situ.\n\nIn this talk\
 , I will explain the process of _instrumenting_ a code with ParaView Catal
 yst that will allow it to perform in-situ processing and share my experien
 ces of doing so with GRChombo. I will also discuss the recent work with In
 tel to improve the support for distributed AMR data in OSPRay. \n\nHybrid 
 Zoom link: https://zoom.us/j/94539775650?pwd=TjRGem5XMXV2YnBYVmpBRzhpNzNGZ
 z09\n\nZoom Meeting ID: 945 3977 5650 Zoom Passcode: 496240
LOCATION:JJ Thomson Seminar Room\, Maxwell Centre
END:VEVENT
END:VCALENDAR