The current Marvin cluster is composed of different computing machines or nodes. Each of them has different characteristics because they have been incorporated over time. We have tried to keep all possible nodes in production to utilize the maximum computing power in the service. All of them have Infiniband interconnection. Below are the different nodes and their characteristics.

IBM Blade Center H22

The mr-03-XX nodes are the oldest machines currently in the cluster, dating back to 2012. They have 12 cores spread across two sockets with Intel(R) Xeon(R) CPU E5645 @ 2.40GHz (Westmere)  and 96GB of gross RAM.

IBM System x3850 X5

The mr-04-XX node was the first 'Big Node' to be incorporated into the cluster in 2013. It has two sockets with 20 cores each, with Intel(R) Xeon(R) CPU E7-4850 @ 2.00GHz from the Westmere family. It has 256 GB of RAM.

Dell PowerEdge R430-730

The mr-00-XX nodes were incorporated between 2015-2018 through different purchases. They are two-socket machines with 16 and 32 cores with Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz and Intel(R) Xeon(R) CPU E5-2683 v4 @ 2.10GHz from the Haswell and Broadwell families, respectively. They have 128 GB and 256 GB of gross memory.

Dell PowerEdge R830

The mr-01-XX nodes were the next 'Big Nodes' to be added to the cluster in 2017 and 2018. They have 4 sockets with 48 and 64 cores with Intel(R) Xeon(R) CPU E5-4660 v4 @ 2.20GHz chips from the Haswell family. They have 512 GB of RAM.
 

SIE LADON-GIGABYTE

The latest 'Big Nodes' to be added to the cluster are the mr-05-XX nodes from 2020. They have two sockets and 48 cores of Intel® Xeon® Gold 6248R from the Skylake family. They have the most memory in the cluster, with 1.5TB of RAM each. In addition, they have an Nvidia Quadro RTX 4000 GPU with 8GB of GDDR6 memory.