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compute resources

  • In general, the offers are limited to members of I-MATH & DM3L and their students.
  • Other UZH members are welcome to contact support@math.uz.ch .
  • First time user: contact support@math.uzh.ch first.

Reservations

Make reservations on https://made-fb1.math.uzh.ch/

  • Short (< 1 day) computations don't need a reservation,
  • Longer (> 1 day) are recommended to be done with a reservation.
  • With reservation: In case of maintenance need, we typically schedule the maintenance according to the needs of the user.
  • Without reservation: We try to contact the user and wait several hours for an answer.
  • General: if we see running computations, we always contact the user first (independent of whether or not a reservation exists). If the user doesn't answer (weekend, holiday, ...) we decide on our own what to do.

Offers

  • For small / ad hoc computations, just start the compute software via the ThinLinc environment.
  • For medium computations, please contact support@math.uzh.ch to ask for the best fitting possibility and to reserve nodes.
  • For large computations and professional support please check http://www.s3it.uzh.ch/.

Resources at I-MATH & DM3L

Host Purpose CPU GPU RAM Local disks Purchase OS
Model Speed Cores Model VRAM
aroca research AMD EPYC 9334^1^ x2 2.70 GHz 64 (HT) NVIDIA RTX 6000 Ada 48 GB 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
bellow research AMD EPYC 9334^1^ x2 2.70 GHz 64 (HT) NVIDIA L40S x4 48 GB 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
sulem research AMD EPYC 9334^1^ x2 2.70 GHz 64 (HT) NVIDIA A40 x2 (stacked) 96 GB 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
zahedi research AMD EPYC 9334^1^ x2 2.70 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
ribeiro research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
sushko research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
swart research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
vernon research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
vinzant research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
wheeler research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) NVIDIA L40S 48 GB 512 GB 2x240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
willbanks research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) --- 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
terracini research AMD EPYC 7763^2^ 2,45 GHz 64 (HT) --- 512 GB 2x 240 GB, 8TB NVMe 12/2024 Ubuntu 24.04
rambo research AMD-EPYC-7742 2,25 GHz 64 (HT) --- 512 GB 240GB, 2TB 08/2021 Ubuntu 24.04
olive research AMD-EPYC-7502P 2,50 GHz 32 (HT) --- 512 GB 240GB 04/2022 Ubuntu 24.04
oja research AMD-EPYC-7502P 2,50 GHz 32 (HT) --- 512 GB 240GB 04/2022 Ubuntu 20.04
stokes research AMD-EPYC-7502P 2,50 GHz 32 (HT) --- 512 GB 240GB 04/2022 Ubuntu 24.04
walker student AMD-EPYC-7502P 2,50 GHz 32 (HT) --- 512 GB 240GB 04/2022 Ubuntu 24.04
Old servers
brady research Intel Core 6C i7-8700K 3,70 GHz 12 (HT) GigaByte GeForce GTX 1070 G1 8 GB 64 GB 80GB, 2TB 02/2018 Ubuntu 24.04
david research Intel Xeon 10C E7-2850 x 8 2,00 GHz 80 (no HT) GigaByte GeForce GTX 1070 G1 8 GB 512 GB 240GB 05/2013 Ubuntu 24.04
estonia0 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
estonia1 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
estonia2 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
estonia3 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
georgia0 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
georgia1 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
georgia2 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
georgia3 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
iran0 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
iran1 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
iran2 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
iran3 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
jordan0 professors & assistants: matlab, mathematica, maple, R Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
jordan1 research Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
jordan2 courses Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04
jordan3 courses Intel Xeon 6C E5-2640 2.50 GHz 12 (no HT) --- 256 GB 2 TB 05/2012 Ubuntu 24.04

Mainboard:

General

Access

  • The compute nodes can be accessed by SSH only and only from inside I-MATH/DM3L.
  • Option A: Use ThinLinc as starting point 
    • MatLab, Mathematica, Maple, R, RStudio: start the application via menu 'Applications > Science > ...' - you will be redirected automatically to the appropriate compute server.
    • For non standard compute software (e.g. python programs) please log on the compute node via ssh (no jumphost required), then start the program. 
  • Option B: SSH - sign into ssh.math.uzh.ch (=jumphost) and jump to the compute node again via ssh.

Best practice: Combinated SSH setup for compute user

Yes, the following described setup is a multi step and complicated setup - use it, if you frequently have to log on and/or to make the log in as easy as possible. Invest 20mins to do the setup, if you fail: contact our support ... the benefits are worth.

  • Benefit: no password required, only one command to get a running ssh session.
  • Cost: setup has to be done on every computer you want to use for the ssh session.
1) Private / Public SSH key setup
  • MS Windows: install/activate WSL (choose Distro: Ubuntu), or choose any other SSH client package
  • Linux / MacOS X: 

Details

 

2) Automated login on final compute host 
3) SSH session resumeable

 


Operating System

  • Ubuntu LTS (Linux) - all compute servers.
  • Very very limited software might be installed on some Windows virtual machines.

Storage

  • If you need more disk space, please contact support@math.uzh.ch .
  • Remote (NFS)
    • Personal Home directory
    • /compute/
  • Local
    • /export/user/

Programs / Software

  • All compute servers use the same applications and versions as installed on the ThinLinc terminals.
  • Please report missing or outdated software or wishes to support@math.uzh.ch .
  • There is no Intel C or Intel Fortran Compiler.
  • If you need other program versions than the default one: open a terminal, type the program name followed by two 'TAB' presses: this will show all available installed versions of the specified program.

Parallel computing

  • Cluster software
    • Not installed / offered at I-MATH/DM3L.
    • Various MPI packages and libs are installed. Compiling and preparation to run programs later on a distributed compute cluster are possible.
  • Some programs, like matlab, offer limited built-in auto parallelization.
  • All of the compute nodes are shared memory machines. It's reasonable to start as many programs in parallel as long the load is less or equal the number of cores.
    • Determine the load by using the command uptime via a terminal. The last three numbers are the average number of jobs (=load) in the run queue over the last 1, 5 and 15 minutes.
$ uptime
 15:55:20 up 22 days, 24 min,  1 user,  load average: 11.97, 11.73, 11.62

Monitoring

  • List GPUs
nvidia-smi
  • Show GPU-Usage (Load, Temperature, Watts-Usage etc.)
nvtop -d 2
  • Fan status (Rounds per Minute etc.)
fanstatus

Limitations

  • Memory
    • Soft: 64GB
    • Hard: unlimited
  • Number of processes per user
    • Soft: 2048
    • Hard: 4096
  • Change limitations
$ ulimit -m unlimited
$ ulimit -u 4096
  • Make sure to increase a hard limit only one time. If you try to increase it a second time, you'll get an error. You have to log out and log in again to get a new chance.
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