# PFC3D model size

**URL:** <https://forum.itascainternational.com/t/pfc3d-model-size/128>\
**Category:** PFC\
**Created:** [November 12, 2021, 2:45pm UTC](https://forum.itascainternational.com/t/pfc3d-model-size/128 "2021-11-12T14:45:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jhazzard](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@jhazzard](https://forum.itascainternational.com/u/jhazzard)\
**Post date:** [November 12, 2021, 2:45pm UTC](https://forum.itascainternational.com/t/pfc3d-model-size/128/1 "2021-11-12T14:45:43Z")

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How big a PFC3D model can you run on a modern PC - assuming spherical particles? More than a million?

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**Author:** ![ddegagne](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/ddegagne/32/55_2.png) [@ddegagne](https://forum.itascainternational.com/u/ddegagne)\
**Post date:** [January 28, 2022, 9:10pm UTC](https://forum.itascainternational.com/t/pfc3d-model-size/128/2 "2022-01-28T21:10:04Z")

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Though computers have gotten more\faster memory, the CPU speeds haven’t increased much nor have the CPU caches. _PFC3D_ can simulate somewhere in the low millions of spherical particles reasonably on a single, modern PC.

Itasca is currently working on an MPI algorithm that we expect will push this into the 10’s of millions of spherical particles by solving a single model across several computers. The development of [web licenses](https://www.itascacg.com/software/web-licenses) for cloud computing plus a [Linux OS version](https://www.itascacg.com/about/news/itasca-software-now-available-for-linux), which are currently available, is part of our MPI development process.