Welcome to the HPC web

This is a wiki home for high-performance computing at the NRAO. The area is still undergoing organizational changes but content in the Categories section is either actively maintained or will exist in coming months.


Older Areas

The following areas are not under active development but may still have useful information.

Recently changed topics across the HPC web

Listing the twelve most recent changes...

Web Topic Summary Date - UserSorted descending
HPC UsnoDifxPatch2Draft Neo Correlator Patching The patch process for the Neo correlator (installed at USNO on November 2019) is outlined below. A set of "checkboxes" is provided to assi... 2020-10-28 - 18:11 - JimJacobs
HPC UsnoDifxOsPatch2 Neo Correlator Patching The patch process for the Neo correlator (installed at USNO on November 2019) is outlined below. A set of "checkboxes" is provided to assi... 2020-10-28 - 17:20 - JimJacobs
HPC UsnoDifxOsPatch2ChecklistItemState WARNING! THIS TOPIC IS GENERATED BY System.ChecklistPlugin PLUGIN. DO NOT EDIT THIS TOPIC (except table data)! Back to the checklist topic UsnoDifxOsPatch2. *con... 2020-10-27 - 18:29 - JimJacobs
HPC UsnoDifxAide2 AIDE AIDE is a program that scans important files in the system and reports any changes in the files relative to the accepted baseline. The security STIG require... 2020-09-30 - 12:31 - JimJacobs
HPC UsnoDifxServerNagiosAck2 Shutting off Nagios Alarms When a nagios problem can't be fixed right away it can get tiresome to have the alarm message coming out every hour or so. Almost the s... 2020-09-30 - 11:26 - JimJacobs
HPC UsnoDifx2-200924 17:38 root@bg mds 1 T ~ # yum install mlnx ofed all Loaded plugins: langpacks, product... 2020-09-24 - 17:47 - JimJacobs
HPC UsnoDifxPtyFix2 Pty Allocation Problem So far, this problem has mostly occurred on server 1 on both clusters, probably because it gets the most login traffic suring maintenance. ... 2020-09-21 - 10:22 - JimJacobs
HPC UsnoDifxServerDebuggingSeLinux2 Debugging SE Linux Both server 1..2 and the BGFS hosts are running SE Linux in targeted mode; the SWCs are not running SE Linux although since the images are host... 2020-09-14 - 13:13 - JimJacobs
HPC UsnoDifxLogging2 Logging Rsyslog Server 1 runs rsyslogd via the systemd rsyslog.service; the main configuration for the rsyslod is /etc/rsyslog.conf. In addtion, server 1 provide... 2020-09-09 - 16:44 - JimJacobs
HPC UsnoDifxDNS2 Correlator DNS Service Server Configuration Both server 1 and server 2 provide DNS service to the correlator. Server 2 should be considered a backup to server 1.... 2020-09-09 - 13:08 - JimJacobs
HPC UsnoDifxNTP2 Time Service Overview Time services is provided primarily by server 1 using the chronyd daemon. The configuraiton file for chronyd is /etc/chrony.conf. Service... 2020-09-09 - 13:06 - JimJacobs
HPC UsnoDifxSMTP2 Mail Service Overview Since the correlator is effectively a compute device, very little email service is required. The only exception is that the system administ... 2020-09-09 - 13:02 - JimJacobs

More extensive change lists are available via the WebChanges topic.

HPC Web Utilities

Topic revision: r23 - 2018-10-16, MikeHatz
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