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Update Intro To Rivanna
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Pareceh committed May 31, 2024
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2 changes: 1 addition & 1 deletion content/notes/rivanna-intro/_index.md
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name: Introduction to High Performance Computing
---

Rivanna is the university's primary resource for high\-performance computing. It provides a platform for computationally-intensive research across disciplines.
UVA's primary resource for high\-performance computing provides a platform for computationally-intensive research across a variety of disciplines.

{{< figure src="/notes/rivanna-intro/img/rivanna_racks.png" caption="The Rivanna cluster" >}}

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menu:
rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
---

FastX is a Web-based desktop environment for HPC. It is accessible either through the [Open OnDemand Interactive Apps](/notes/rivanna-intro/ood_interactive_apps) menu, or directly at [rivanna-desktop.hpc.virginia.edu](https://rivanna-desktop.hpc.virginia.edu).
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menu:
rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
---

A MATE desktop looks a little like an older Windows desktop. In the ribbon at the top are `Caja`, a file manager; a `Terminal` application, and the Firefox Web browser.
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parent: Connecting to Rivanna
parent: Connecting to The System
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You can also terminate -- or restart -- a session from the My Sessions tab. To terminate, click the `x` in the upper right of the session, or use the menu.
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rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
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If you simply close your session browser tab, FastX _suspends_ your session rather than terminates it. It is generally preferable to terminate rather than suspend so you will not accidentally have multiple sessions running.
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rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
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Most users should chose the MATE session.
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rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
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FastX starts a _session_ on a frontend. A new session is started by selecting either the _MATE_ or _Terminal_ icon under Applications on the right side of the page.
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name: Connecting to Rivanna
name: Connecting to The System
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* There are three ways to connect to the HPC System:
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rivanna-intro:
parent: Connecting to Rivanna
parent: Connecting to The System
---

To connect to Open OnDemand, open your web browser and type

[https://rivanna-portal.hpc.virginia.edu](https://rivanna-portal.hpc.virginia.edu/)
[https://ood.hpc.virginia.edu](https://ood.hpc.virginia.edu/)

You will need to authenticate with Netbadge (“Netbadge in")

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parent: Connecting to Rivanna
parent: Connecting to The System
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The Open OnDemand home page is the Dashboard.
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parent: Working with Files
---

Rivanna runs the Linux operating system. File paths start from _root_, denoted with a forward slash (`/`). The layout of the folders/directories is like an upside-down tree.
UVA HPC runs the Linux operating system. File paths start from _root_, denoted with a forward slash (`/`). The layout of the folders/directories is like an upside-down tree.

{{< figure src="/notes/rivanna-intro/img/unix_tree.png" caption="Schematic of folders on Rivanna. Only some files and folders shown." >}}
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rivanna-intro:
parent: Overview of Rivanna
parent: Overview of UVA HPC
---

* Allocations and Groups
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Time on the HPC cluster is _allocated_.
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parent: Overview of Rivanna
parent: Overview of UVA HPC
weight: 20
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Active users can access free storage for active work. Research groups that need more permanent storage, or wish to share storage space, can also lease storage.
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parent: Overview of Rivanna
parent: Overview of UVA HPC
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Currently the Rivanna supercomputer has 603 nodes with over 20476 cores and 8PB of various storage.
Currently the supercomputer is made up of two systems, Rivanna and Afton, and between the two has 626 nodes with over 20448 cores and 8PB of various storage.

Several queues (or “partitions”) are available to users for different types of jobs. One queue is restricted to single-node (serial or threaded) jobs; another for multi-node parallel programs, and others are for access to specialty hardware such as large-memory nodes or nodes offering GPUs.

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name: Overview of UVA HPC
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* Node
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4 changes: 2 additions & 2 deletions content/tutorials/rivanna-intro/index.md
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---
title: Introduction to Rivanna
summary: "This tutorial is an introduction to using the Rivanna high-performance computing (HPC) system."
title: Introduction to UVA HPC
summary: "This tutorial is an introduction to using UVA's high-performance computing (HPC) system."

# Schedule page publish date (NOT talk date).
publishDate: "2021-04-13T00:00:00Z"
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