Linux Cluster - Compute Power Out of the Box

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1 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II Linux Cluster - Compute Power Out of the Box Harry Schlagenhauf H.Schlagenhauf@science-computing.de www: Most of our customers do not want to operate Linux Clusters they want solutions for their computational problems... Compute Power out of the Box! K II - 39

2 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow K II - 40

3 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II How to get Compute Power Out of the Box 1. Step: Take measure 1. Define a list of requirements together with the customer 2. Realize benchmark tests to identify the ideal hardware components 3. Configuration of the cluster hardware to be actually ordered How to get Compute Power Out of the Box 2. Step: Tailor 1. Definition of the sytem configuration of the cluster 2. Preparation of the application software 3. Selection of the Linux components (kernel, modules, rpm-packets,...) 4. These activities result in a s.cluster CD K II - 41

4 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference How to get Compute Power Out of the Box 3. Step: Fit 1. Installation of the cluster 2. Test runs to optimize and fine-tune the Cluster configuration 3. Acceptance of the cluster by the customer 4. Regular operation Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow 1.1. The s.cluster Installation Concept K II - 42

5 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II The s.cluster Installation Concept - I Linux CDs s.cluster CD External Network Master node Client nodes 1.1. The s.cluster Installation Concept The s.cluster Installation Concept - II Linux CDs External Network s.cluster CD Basic installation of the master node using the linux CDs Master node Client nodes 1.1. The s.cluster Installation Concept K II - 43

6 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference The s.cluster Installation Concept - III Linux CDs External Network s.cluster CD Installation of the master node using the s.cluster CD Master node Client nodes 1.1. The s.cluster Installation Concept The s.cluster Installation Concept - IV External Network Installation of the first client node via network Client requests an IP-Address from the master via DHCP 1.1. The s.cluster Installation Concept K II - 44

7 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II The s.cluster Installation Concept - IV External Network Installation of the first client node via network Client requests an IP-Address from the master via DHCP Client is recognized as to be installed : an installation boot image is transferred to the client 1.1. The s.cluster Installation Concept The s.cluster Installation Concept - IV External Network Installation of the first client node via network Client requests an IP-Address from the master via DHCP Client is recognized as to be installed : an installation boot image is transferred to the client Installation of the node using RedHat kickstart Configuration of the node using scvenus 1.1. The s.cluster Installation Concept K II - 45

8 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference The s.cluster Installation Concept - IV Installation of the first client node via network External Network Client requests an IP-Address from the master via DHCP Client is recognized as to be installed : an installation boot image is transferred to the client Installation of the node using RedHat kickstart Configuration of the node using scvenus DONE! 1.1. The s.cluster Installation Concept Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow 1.2. The s.cluster Administration Concept (scvenus) K II - 46

9 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II The s.cluster Administration Concept (scvenus) The functunality of computers are Group discribed concept through their group membership Performance, minimize influence Parallelization of unreachable clients Single Central point of administration no local configuration, administration Automated system administration: Method concept fast, reproducible, solid/stable Multi administrator environment Different administrator accounts, different access rights, log files 1.2. The s.cluster Administration Concept (scvenus) Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow 1.3. Integration and Job Flow K II - 47

10 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference Integration and Job Flow - Software Layers LSF LS-DYNA, NASTRAN,... node node node Easy access to compute resources over a WEB interface Comfortable job flow management with a graphical editor Optimal utilization of compute resources, LSF Integration of different applications Automate and reproduce system administration Operating systems 1.3. Integration and Job Flow Agenda 1. The s.cluster Installation Concept 2. The s.cluster Administration Concept (scvenus) 3. Integration and Job Flow K II - 48

11 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II Integration and Job Flow - I System Environment Linux Cluster In a pre processing process the CAE engineers are building the input decks on their workstations WS... Integration and Job Flow - II System Environment Linux Cluster The CAE engineers submits batch jobs over a WEB interface, generated from EnginFrame WS... K II - 49

12 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference Integration and Job Flow - III System Environment Linux Cluster In a submit panel the project, case name, input deck and other job parameters are specified WS... Integration and Job Flow - IV System Environment submit Linux Cluster job script With flowguide the batch jobs are prepared to be submited as job scripts in a load sharing tool, like LSF WS... job script submit K II - 50

13 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II Integration and Job Flow - V System Environment submit Optimal distribution of batch jobs depending on system requirements Linux Cluster job script scheduler. batch queues WS... job script submit Integration and Job Flow - VI System Environment submit Calculation of the batch job in local working directories on the Linux Cluster Linux Cluster job script scheduler. batch queues WS... job script submit K II - 51

14 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference Integration and Job Flow - VII System Environment submit For the post processing process the results are automated copied back to the WS or other servers Linux Cluster job script scheduler. batch queues WS... CAE engineers are informed per job script copy results submit Summary 1. Simple and comfortable to use solution for CAE engineers (Compute Power out of the Box) 2. Support of heterogenious Environment (Linux Cluster, Compute Servers, Unix-/Linux-WSs, Windows-PCs) 3. Flexible adapt because of modular software layers 4. Easy to administrate, scvenus K II - 52

15 4 th European LS-DYNA Users Conference MPP / Linux Cluster / Hardware II Thank you for your attention K II - 53

16 MPP / Linux Cluster / Hardware II 4 th European LS-DYNA Users Conference K II - 54

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