Difference between revisions of "Welcome to the HPC User Wiki of the University of Oldenburg"
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==== From within the University (intranet) ==== | ==== From within the University (intranet) ==== | ||
Within the internal net of the University, access to the systems is granted via ssh. Use your favorite ssh client, like OpenSSH, PuTTY, etc. For example, on a UNIX/Linux system, users of FLOW may type on the command line (replace "abcd1234" by your own account): | |||
ssh abced1234@flow.hpc.uni-oldenburg.de | |||
Similarly, users of HERO can login by typing: | |||
ssh abced1234@hero.hpc.uni-oldenburg.de | |||
Use <tt>ssh -X</tt> for X11 forwarding (i.e., if you need to export the graphical display to your local system). | |||
For security reasons, access to the HPC systems is denied from certain subnets. In particular, you cannot login from the WLAN of the University or from "public" PCs (located, e.g., in Libraries, PC rooms, or at other places). | |||
==== From outside the University (internet) ==== | ==== From outside the University (internet) ==== | ||
Gateway : vpn2.uni-oldenburg.de | |||
Group name : hpc-vpn | |||
Group password: hqc-vqn | |||
thus you have to supply the above data when configuring your VPN client. | |||
After the VPN tunnel is established, you can login to HERO or FLOW via ssh, as described above. | |||
=== User Environment === | === User Environment === | ||
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=== Compiling and linking programs === | === Compiling and linking programs === | ||
==== Documentation ==== | ==== Intel compiler | ||
===== Documentation ===== | |||
* [http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/cpp/lin/index.htm C/C++ Compiler] | |||
* [http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/start/lin/cpp/index.htm Getting started tutorial] | |||
[http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/ | * [http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/fortran/lin/index.htm Fortran compiler User and Reference Guides] | ||
=== Job Submission and Monitoring === | === Job Submission and Monitoring === | ||
Revision as of 01:23, 20 April 2011
Note: This is a first, preliminary version (v0.01) of the HPC User Wiki. Its primary purpose is to get you started with our new clusters (FLOW and HERO), enabling you to familiarize with these systems and gather some experience. More elaborate, updated versions will follow, so you may want to check these pages regularly.
Introduction
The central HPC facilities of the University of Oldenburg comprise three systems:
- FLOW (Facility for Large-Scale COmputations in Wind Energy Research): IBM iDataPlex cluster solution with 2232 CPU cores, 6 TB of (distributed) main memory, and Quad-Data Rate (QDR) InfiniBand interconnect (theoretical peak performance: 24 TFlop/s).
- HERO (High-End Computing Resource Oldenburg): hybrid system composed of two components:
- IBM iDataPlex cluster solution with 1800 CPU cores, 4 TB of (distributed) main memory, and Gigabit interconnect (theoretical peak performance: 19.2 TFlop/s),
- SGI Altix UltraViolet shared-memory system ("SMP" component) with 120 CPU cores and 640 GB of globally addressable memory, and NumaLink5 interconnect (theoretical peak performance: 1.3 TFlop/s).
- GOLEM: older, AMD Opteron-based cluster with 390 cores and 800 GB of (distributed) main memory (theoretical peak performance: 1.6 TFlop/s).
FLOW and HERO use a dedicated, shared storage system (high-performance NAS Cluster) with a net capacity of 130 TB.
FLOW is employed for computationally demanding CFD calculations in wind energy research, conducted by the Research Group TWiST (Turbulence, Wind Energy, and Stochastis) and the ForWind Center for Wind Energy Research. It is, to the best of our knowledge, the largest system in Europe dedicated solely to that purpose.
The main application areas of the HERO cluster are Quantum Chemistry, Theoretical Physics, and the Neurosciences and Audiology. Besides that, the system is used by many other research groups of the Faculty of Mathematics and Science and the Department of Informatics of the School of Computing Science, Business Administration, Economics, and Law.
Hardware Overview
(Westmere-EP, 2.66 GHz)
(Nehalem-EX, "Beckton")
Basic Usage
Log in to the system
From within the University (intranet)
Within the internal net of the University, access to the systems is granted via ssh. Use your favorite ssh client, like OpenSSH, PuTTY, etc. For example, on a UNIX/Linux system, users of FLOW may type on the command line (replace "abcd1234" by your own account):
ssh abced1234@flow.hpc.uni-oldenburg.de
Similarly, users of HERO can login by typing:
ssh abced1234@hero.hpc.uni-oldenburg.de
Use ssh -X for X11 forwarding (i.e., if you need to export the graphical display to your local system).
For security reasons, access to the HPC systems is denied from certain subnets. In particular, you cannot login from the WLAN of the University or from "public" PCs (located, e.g., in Libraries, PC rooms, or at other places).
From outside the University (internet)
Gateway : vpn2.uni-oldenburg.de Group name : hpc-vpn Group password: hqc-vqn
thus you have to supply the above data when configuring your VPN client. After the VPN tunnel is established, you can login to HERO or FLOW via ssh, as described above.
User Environment
Compiling and linking programs
==== Intel compiler
Documentation
Job Submission and Monitoring
Application Software and Libraries
Advanced Usage
Here will you will find, among others, hints how to analyse and optimize your programs using HPC tools (profiler, debugger, performance libraries), and other useful information.
... tbc ...
