Ideal Charateristics for Distributed High Throughput Computing (HTC)

  • Your science workflow can be split into independent jobs.
  • These jobs can be run on a single processor or compute node.
  • Your application software is “portable”. (We can help make applications portable and also provide pre-installed software modules)

Challenges to Distributed HTC

Your application may present additional challenges, but many of these have solutions on the OSG:

  • Computations that access or produce large datasets.
  • Your computations need small scale parallelism:
    • OSG has sites that offer queues with job slots having up to 32 cores.
  • Your application requires large amounts of memory:
    • Most computing sites provide 2 GB/core, however some offer up to 4.5 GB/core, and requests for multi-core queues therefore come with additional memory/job.

Applications Poorly Suited to Distributed HTC

Unfortunately high throughput computing is probably not a good fit for your job if:

  • You need results immediately after submission (i.e. an interactive environment).
    • Distributed HTC resources are accessed through a batch system and therefore suited for longer processing times, with job durations typically measured in hours.
  • Your application needs large numbers of cores simultaneously.
    • OSG does not schedule MPI jobs.
  • Your application requires a shared filesystem.
    • There is no shared filesystem across the many computing sites of the OSG. We can help assess if your app has this constraint, and if it can be practically removed.


As usual, you can direct any questions using the help desk or by sending email to


This page was updated on Apr 23, 2019 at 11:45 from intro/overview/