CRESCO5F
================

Cluster Features
----------------

The **CRESCO5F cluster** located in **Frascati** is a computing system composed of **8 nodes**, some equipped with **GPU accelerators** and one with **FPGA**.

Node configuration:

- **cresco5fx001** : front-end node with **2 NVIDIA A100 GPUs**
- **cresco5fx002** : node with **2 NVIDIA A100 GPUs**
- **cresco5fx003–004** : nodes with **1 NVIDIA A100 GPU**
- **cresco5fx007–009** : nodes **without GPU and without FPGA**
- **cresco5fx010** : node with **Intel FPGA**

General hardware configuration of the nodes:

- **2 sockets with 16 cores** AMD **EPYC 7313** processors at **3.0 GHz**
- **256 GB RAM** (8 GB per core)
- **1 × 500 GB SATA II disk**
- **InfiniBand MLX5 100 Gb/s interface** (≈80 Gb/s effective bandwidth)
- **Two 10 GbE interfaces**
- **BMC/IPMI support** and software for **remote console management**

The cluster provides **256 CPU cores** interconnected through a **low-latency
network based on Mellanox InfiniBand EDR (100 Gb/s)** managed by a **Mellanox switch**.

Nodes run the operating system:

`Rocky Linux 8.5 <https://www.eneagrid.enea.it/Resources_en/CRESCO_documents/index.html>`_

This is a newer major release compared to **CentOS 7.3 (CRESCO6)** and
**CentOS 7.8 (CRESCO4)**. Users are therefore advised to verify the
portability of their codes and recompile them if necessary.

Each node also provides a **local scratch disk**:
/tempwork

The local scratch area is **1 TB NVMe**.

.. note::

   Access to the ``/tempwork`` area must be requested through a support ticket.

The architecture of a **CRESCO5F compute node** is represented in the following scheme:

.. image:: clusters/cresco5f_image1.png
   :align: center
   :width: 1600px

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