hardware

Submitted by Ralph McArdell on Sun, 20 Jul 2014 16:58:29 +0100
Updated: Sun, 09 Nov 2014 10:33:13 +0000

In my previous post Parallella Problems – Initial Investigations [1] I detailed the problems I was having with the 4 Parallella boards [2] in my mini-cluster and what I had done to investigate them.  Since then I have been continuing my investigations and it looks like I might have found a reason and solution to the more serious problem suffered by the board that suffers complete system lock ups when running Epiphany chip [3] tests and examples.

Submitted by Ralph McArdell on Sat, 12 Jul 2014 16:35:50 +0100
Updated: Tue, 04 Nov 2014 08:44:18 +0000

My previous post Building a Parallella Mini-Cluster [1] dealt with physically building the cluster and ended at the point it could be switched on and off. The next stage is bringing the cluster up to a stable and usable state, and I am sorry to report that it has not been a trouble free ride and tracking down the problems is ongoing as of mid-July 2014.

One thing I should mention is that before turning on the power for the first time I installed the provided heat sinks on the Zynq FPGA chips.

Submitted by Ralph McArdell on Thu, 10 Jul 2014 16:58:45 +0100
Updated: Thu, 27 Nov 2014 11:30:30 +0000

In early May 2014 I finally received from Adapteva [1] my Parallella Kickstarter project [2] mini-cluster reward of 4 Parallella boards plus network switch, power adapters, cables etc. The reward was originally supposed to be delivered in May 2013 but suffered many delays and setbacks, as documented on the Parallella website [3] and forums [4].

Submitted by Ralph McArdell on Wed, 25 Sep 2013 18:01:46 +0100
Updated: Thu, 27 Nov 2014 11:30:05 +0000

I have been adding support for peripheral types to my Raspberry Pi C++ peripherals library[1] and as a result have been reading the BCM2835 ARM Peripherals data sheet document[2] rather closely as well as the document’s errata page on eLinux[3]. I, like others, have been bumping into documentation errors – and even added one to the eLinux list errata.