Many faculty employees have computational tasks too heavy for their regular workplace machine(s). The faculty provides access to some servers specifically designed for running such tasks. They may have more CPU power and memory and keep running overnight.

See our general overview of these facilities.

One of these systems is mastodont.

mastodont is a Linux system designed to support long-running computations that require a large amount of RAM.

It was not designed to support CPU-bound or parallel computations. You may run them on mastodont provided they do not interfere with its intended use.

Hardware specifications

4 x Intel(R) Xeon(R) Gold 6136 CPU @ 3.00GHz (96 processors)
3 TB (3169407968 KB)
swap space
4 x 2.9 TB (SSD)
50 GB in /home
HDD (in a RAID 6 array)
33 TB in /scratch

Operating system

mastodont runs Ubuntu Server 18.04 LTS.

Software is installed and upgraded by BCF on request.

Security updates are applied automatically every night. Reboots only happen after communicating with users, so as not to disturb long-running processes.

User accounts

If you wish to be granted access, please apply at the BCF help desk in MF 3.083 (tel. 2802) or using our account request form.

SSH access is only allowed from hosts in the 131.155.*.* IP range; that is to say, on campus or after using TU/e's VPN service.

Login using SSH with your TUE user name and password. It is highly recommended that you setup and use public key authentication .

Disk space

All disk space is local, not shared with other systems:

Your home directory; mostly intended for configuration files. We do not provide backup service, so keep your files safe elsewhere. Disk space is limited (50 GB shared by all users), and quota are not enforced; please be considerate of other users and keep your use as limited as possible.
Scratch space for temporary files; use it for files you can afford to lose. We reserve the right to clean it up when required! There is plenty of disk space, but please be considerate of other users and regularly remove files you no longer need.

At the moment, no automatic backup facilities are in place for any of these files. Be sure to make your own backups of important files, e.g. on SURFdrive .

Disk error protection is provided by the RAID levels as mentioned in the Hardware specifications section.
Note that this does not protect against disk controller failures.


Packages from the Ubuntu repositories can be installed on request.
We will check the requested packages for security and side-effects for other users
and install them if we do not see issues.

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