Error:Success

Automated Verification and Web Flow

theNirvana — Thu, 15 May 2008 16:19:52 +0000

DWR & Spring Form Controllers

Halcyon — Mon, 17 Mar 2008 09:06:22 +0000

During some recent development, it became apparent that I’d need some integration point between DWR and Spring Form Controllers. After researching a resolution to this, I came across a few articles. While these worked, I was confident there had to be a simpler way… and there was.
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Functional Example of Declarative Caching with Spring

Halcyon — Sat, 12 Jan 2008 00:58:28 +0000

Source Code for Funcational Example

I recently had the dubious pleasure of working with Spring-Modules’ Declarative Caching with EHCache. The package I’m developing involves database integration through iBATIS, Spring Web Services, and caching to increase performance. I chose to use Spring Modules’ Declarative Caching because it obviously integrates well with the rest of the Spring architecture, and allows for the use of more than one caching engine, of which, I chose EHCache.
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My Favorite Error Message Ever

theNirvana — Fri, 02 Nov 2007 07:27:39 +0000

While running a Poisson Equation Finite Difference approximation algorithm (whew, a mouthful there!) today on Cell, I got the greatest error message ever:

[cgb@cell pfd]$ ./withRapidMind
terminate called after throwing an instance of ‘rapidmind::Exception’
what(): The type ‘double’ is not supported by the Cell backend.
Aborted

What the hell indeed. Much thanks to the RapidMind guys for an awesome function called “what” and not supporting the double type (although I’m sure there’s a long explanation about that I haven’t found yet).

Setting up Linux on the Cell (Part 2)

theNirvana — Thu, 01 Nov 2007 05:22:01 +0000

So…Yellow Dog Linux doesn’t like SDK 2.1 very much. Turns out I must have done something wrong while trying to install it because it only wants to work on Fedora and I fucked up my ability to compile code for the SPEs and PPE while doing so. So I reinstalled Yellow Dog and this time, followed the very simple explanation at the RapidMind website which said just to install the libspe2 rpm and not mess around with anything else. It worked great, but let’s step back a second here.
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Setting up Linux on the Cell (Part 1)

theNirvana — Tue, 30 Oct 2007 07:26:54 +0000

So we got a PS3 for research in the lab the other day and we got to set up Linux on it. It’s actually pretty painless, although if you can, get a monitor that supports DVI and supports HDCP so you can get the digital connection. We only have analog in the lab so it looks like crap. Seriously though, it looks like feces and I have to use SSH to get anything done. That being said, here’s how to do it:
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“Portable” Package Management is Bullshit {Mostly}

theNirvana — Thu, 25 Oct 2007 10:40:06 +0000

I don’t always want to code in Java. In fact, I’ve recently wanted to not program in Java and get a feel for everything else that’s neat and nifty and blah blah blah. But Java spoiled me. I got used to having my libraries distributed with my package, and having it work on other systems pretty easily. So imagine the fun times I had trying to get MySQL and SMTP support working in other languages…
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Invalid WSDD element ‘deployment’ (wanted ‘deployment’)

bmiller — Fri, 12 Oct 2007 22:16:51 +0000

Ok, so I am setting up some web services using Apache Axis and Spring. Everything compiles just fine, I drop my War into tomcat and boom, I get this awesome error message:
org.apache.axis.deployment.wsdd.WSDDException: Invalid WSDD element ‘deployment’ (wanted ‘deployment’)
Now I wonder, is Tomcat confused? Does it not know what it wants? So after a little bit of poking around I isolated the problem to the wsdd file. Apparently there is a big difference between xmlns=”http://xml.apache.org/axis/wsdd” and xmlns=”http://xml.apache.org/axis/wsdd/” in the deployment tag. Once that was corrected everything worked just fine.

Bloom Filters

theNirvana — Fri, 21 Sep 2007 04:25:50 +0000

I’ve been getting more into my programming roots lately, and after I read this CodeKata, I decided to give it a try. The idea is to write a Bloom Filter, fiddle with the parameters that make it what it is, and test its performance. That being said, let’s look at it.
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It’s Everyone’s Fault

theNirvana — Tue, 18 Sep 2007 05:26:37 +0000

…and no one’s. We have an infrastructure that is ridiculously difficult to maintain and even more difficult to make “simple” changes to. It’s often come up as to whose fault it is that it ended up this way. But it’s my opinion that it’s all of our faults, and at the same time, none of our faults.
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