Building Linux cluster for mechanical engineering software Post: 302920299

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Special Forums UNIX and Linux Applications High Performance Computing Building Linux cluster for mechanical engineering software Post 302920299 by DGPickett on Wednesday 8th of October 2014 03:18:17 PM

10-08-2014

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VNC on XWindows platforms creates a local virtual XWindow desktop that supports your choice of window managers, has low latency and can be viewed by a phelora of platform supporting viewers off your client machine of choice. I am using a JAVA viewer, as I lack local admin. The X tcp or unix sockets run inside the host for min laatency (unless you point off-host X clients to it), and a VNC socket connects the viewer. You can run the VNC tcp though an ssh tunnel for security.

Heterogenous clustering requires smarter load balancing and code compatability or porting. Java is portable, compared to C++/g++, which produces code specific to the CPU and O/S, but still is very widely available to compile locally compatible code.

VM makes sense. In practice, very few modern systems page much, and it makes the environment that much more robust. It can support huge sparse matrixes in an mmap()'d space, key to many problems.

Going highly parallel on cpu and ram suggest that net and file access will become bottlenecks, so yes, you need to put lots of work into making them as parallel as possible, too. Network fabric needs to be many path switches and high bandwidth. If you go fiber with either, remember that with its higher speeds comes higher latency, so problems may need to be structured to avoid that. Net and file have been becoming the same problem, as more and more file is remote from the host.

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LEARN ABOUT DEBIAN

ditrack

DITRACK(1)						      General Commands Manual							DITRACK(1)

NAME

       dt - DITrack command line client tool

SYNOPSIS

       dt command [options] [args]
       dt-createdb repository-url issue-db-dir local-wc
       dt-upgrade-0.7-db issue-db-dir

OVERVIEW

       DITrack	is a free, open source, lightweight, distributed issue (bug, defect, ticket) tracking system using a Subversion repository instead
       of a backend database. It is written in Python and runs in UNIX environment (*BSD, Linux, MacOS X).

       The project is inspired by the idea of Subissue issue tracking system.

       However, while Subissue aims in merely replacing the traditional database storage with Subversion repository, DITrack is a major  rethought
       of  the	issue  tracking  system  paradigm. The main difference is that instead of sticking to the centralized model (one database, one web
       interface, one mail integration machinery), DITrack treats underlying Subversion storage as  a  versioned  distributed  file  system  which
       enables benefits of truly distributed operation mode.

       For more information about the DITrack project, visit http://www.ditrack.org.

       Documentation  for  DITrack  and  its  tools,  including  detailed  usage  explanations of the dt and dt-createdb programs, can be found at
       /usr/share/doc/ditrack/html/index.html.

       Run `dt help' to access the built-in tool documentation.

       Automatic upgrade is possible for databases created by DITrack 0.7. If you are upgrading from previous version of DITrack, use the  upgrage
       utility from DITrack 0.7 first.

       To upgrade a database run the dt-upgrade-0.7-db script, passing the database path as the argument, like:

       dt-upgrade-0.7-db /home/user/ditrack-database

       The  upgrade  procedure	merely	modifies the working copy (nothing gets committed to the repository). So, when done, you should commit the
       changes manually.

								    April 2007								DITRACK(1)