The El Cap EA systems mount the usual LC File Systems and users can familiarize themselves with the Using LC File Systems guide. Additional information is discussed in the Livermore Computing Resources and Environment tutorial, including details on 

  • quotas
  • backups
  • purging
  • file transfer tools

Rabbit Storage

The El Capitan systems consist of a novel near node local storage technology called Rabbit. At its core, a Rabbit node consists of 18 SSDs and one AMD Epyc storage processor. One Rabbit node sits in each El Capitan system rack and is connected directly to other compute nodes within the same rack, as well as to the network. Combined with flux orchestration, there are a wide range of use cases. Future uses of the Rabbit storage system will allow for dynamic storage allocations, with cross-node storage available on a per-job basis.

Addition information about the Rabbits is linked below.

Current Status—Tuolumne

We have made some local storage available to jobs, mounted at /l/ssd on batch (not login) nodes. There is approximate 750GB available on a node-local basis (meaning files written from compute node are not directly visible to other compute nodes in the allocation). At the end of an allocation all data in /l/ssd is removed.

Please note that the /l/ssd mount point is has been made available only on Tuolumne. Neither El Capitan nor RZAdams have /l/ssd at this time. 

Early Users

We will keep users updated as additional Rabbit functionality is ready for user testing. If you are keen on working with Rabbits, please reach out to Elsa Gonsiorowski <gonsiorowski1@llnl.gov>.