2016-05-16

Verisimilitude and Decision-Making

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Last week IVX presented “Speed Mazer IVX” at the Waikato University Open Day 2016. The creation of Speed Mazer IVX was a good time to refle...
2016-01-22

Evicting and Flushing from Ceph Cache Tier/Cache Pools

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Disaster! The OSDs backing my cache pools were reporting full. This occurred because the node carrying most of the backing pools crashed lea...

Ceph Cluster Diary January 2016

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Another node is added to my Ceph cluster. This is a second-hand dual Pentium-D with 8GB of RAM and a 250GG SATA HDD. Removed from the box a ...
2015-12-20

Encouraging Good Discussion on YikYak

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YikYak, the anonymous location-based social media app, can be used for serious discussion because arguments identities change from thread to...
2015-10-02

Battle for Zendikar Pre-release Experience

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I played at the Battle for Zendikar pre-release weekend. It’s been some time since I’ve had time and energy to attend a pre-release so I was...
2015-08-30

Ceph Cluster Thrash and Rebooting Nodes

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I have a home cluster with low traffic volumes but terabytes of data - mostly photos. Ceph provides peace of mind that my data is resilien...
2015-08-22

Bulletproof Processing: try…catch

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Processing is stable and crashes are infrequent. However, my experience doing performances and exhibitions for IVX has shown me it is handy...
2015-08-16

Generative Advertising with Feedback: Bahio Coffee

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M&C Saatchi have combined generative design with feedback analysis to try evolve the most engaging ad. The campaign is called Bahio coff...
2015-07-26

Play The Maryland Extra Credit Problem

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A screenshot of a class problem from the University of Maryland has been doing the rounds. The teacher invites the students to vote to recei...
2015-07-04

Ceph and BitRot

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BitRot is the tendency for data to degrade over time on storage devices. CERN reports error rates are at the 10 -7 level, so BitRot is a ...
2015-06-03

Discussing Human-Centric and Sentience-First Ethics

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This blog post comes about in a discussion on the morality of eating meat. The no-meat camp use a sentience-first moral justification for re...
2015-03-21

Ceph Cluster Diary March 2015

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I am decommissioning all the USB backed OSDs. On the old hardware that I have the USB OSDs are much slower than USB spinning drives. With ne...
2015-02-14

Forcing AIO on Ceph OSD journals

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My Ceph cluster doesn't run all that quick. On reads it was about 20% slower than my RAID5 NAS and writes were 4x slower! Ouch. A good ...
2015-02-05

Howto Deep-Scrub on All Ceph Placement Groups

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Ceph automatically takes care of deep-scrubbing all placement groups periodically. The exact timing of that is tunable but you're probab...
2015-02-02

Bringing back an LVM backed volume

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What can you do when an LVM backed logical volume goes offline? This happens on my slower netbook on an LVM logical volume spanning about 2...
2015-01-06

A Quick Review of USB flash drives from Apacer, Sandisk and Strontium

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In the course of building my USB thumbdrive based ceph cluster I tried USB keys from three different manufacturers with a total of five dif...

IFCOMP2014: With Those We Love Alive

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With Those We Love Alive written by Porpentine and scored by Brenda Neotenomie placed 5th in the 20th Interactive Fiction Competition IFCOM...

IFCOMP2014: Laterna Magica review

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Laterna Magica by Jens Byriel placed 42nd (last) in the 20th Interactive Fiction Competition IFCOMP2014 . You can play online at ifdb . This...

IFCOMP2014: ICEPUNK review

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ICEPUNK by pageboy placed 31st in the 20th Interactive Fiction Competition IFCOMP2014 . You can play online at ifdb . This series of blog po...

IFCOMP2014: Begscape review

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Begscape by Porpentine placed 28th in the 20th Interactive Fiction Competition IFCOMP2014 . You can play online at ifdb . This series of blo...