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.. _introduction:

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Introduction
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Atomospheric Radiation Measurement (ARM) HPC Facility
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ARM data users who need more storage capacity and computational power can apply for direct access to ARM computing resources and data. 
This public software development space enables users to work with large volumes of ARM data without having to download them.

The ARM computing clusters are available to ARM Facility science users who work with very high volumes of ARM data. 
They have the capability to support model simulations, petascale data storage, and big-data analytics for successful ARM science research.

Cumulus
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The Cumulus cluster is a mid-range Cray system with 4,032 processing cores and a 2 petabyte general parallel file server. 
It is primarily used for “high-end modeling” and supports routine operations of Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO).