In this exercise we’ll solve the same assignment as in exercise 1, but using a prepackaged GridPilot application.
Download and install GridPilot
Start GridPilot and answer the initial questions - enable only the computing system “GridFactory” and set the submission host to gridfactory.nbi.dk
Import the app “ttbar_exercise”
Select the application/dataset “ttbar_exercise-100k-events” and click “Run”
Select the application/dataset “ttbar_exercise-merge” and click […]
Exercise 1: LHC Monte Carlo event generation and analysis
One of the final plots.
This exercise was created for the 2011 CERN CERN School of Computing, hosted by the Niels Bohr Institute, University of Copenhagen.
Credits: physics content of this exercise by Jørgen Beck Hansen from the Niels Bohr Institute.
Assignment: Generate 500′000 LHC t-tbar events with PYTHIA and […]
In this post I’ll report on running the application “mc09_7TeV.107691….” from the GridPilot app store. In the case of NorduGrid and WLCG, the ATLAS software is preinstalled on the resources. In the case of GridFactory, the jobs run inside a CernVM appliance with ATLAS software loaded through the AFS network file system. The input dataset […]
In previous posts we saw that I/O bound jobs ran ~3 faster on standard SATA disks than on network file systems and block devices (GPFS, NFS, EBS). This post reports on CPU bound jobs. I ran standard ATLAS Monte Carlo simulation on both grid and cloud resources: imported the ATLAS simulation app and ran […]
In this post, I’ll take a look at some more runs of the “atlas_d3pd_boildown” application available in the GridPilot app store. The difference w.r.t. the runs described in a previous post is that this time I ran on cloud as opposed to grid resources. On dedicated hardware and on two public clouds, Amazon’s EC2 […]
Plot of ATLAS data created with GridPilot from official datasets.
This example demonstrates the use of GridPilot in data processing in high energy physics (HEP). It makes extensive use of some HEP-specific technologies, that are incapsulated in GridPilot in the form of plugins: the ATLAS DB plugin and the NG and GLite computing system plugins. The […]