This website has a good demo of the UML design capabilities of Netbeans 5.5 beta. The demo walks you through creating a class diagram, and also shows code generation from the model.
PS3 production problems lead to downgraded specs?
Rumours this week are that production yields for the 3.5GHz Cell processor for the PS3 are not high enough, and that the processor speed is likely to be reduced to 2.8GHz for the final shipping PS3s later this year in November. The same article mentions that they may be having cooling issues with the hardware crammed into a case that’s too small, so expect to see an external PSU brick instead of an internal unit.
Sony may also have faced issues ensuring backwards compatibility with PS2 and PS One support running in software emulation, so rumours last week suggested that the initial versions of the PS3 will come including the PS2 chipset in the box. Wow, thats quite amazing and a surprise. The PS2 emulates the original Playstation in software running on the one of it’s chips that’s not even the main CPU (I can’t remember which, but I think it’s the I/O controller chip).
Then and now – Vintage 80’s gadgets compared to today
Fosfor Gadgets has a great article comparing gadgets from the late 70’s/early 80’s with what we have today. When you see these side by side you really get an appreciation of how far technology has developed in the last couple of decades.
Configuring Grails on Ubuntu Linux
I’ve recently installed Ubuntu Linux on my laptop, and in order to get Grails running, had to do the following:
- Edit /etc/environment and set up environment vars for Groovy, Grails and Java:
<code> GRAILS_HOME=/INSTALL_DIR/grails-0.2 GROOVY_HOME=/INSTALL_DIR/groovy-1.0-jsr-05 JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun-1.5.0.06 export GRAILS_HOME GROOVY_HOME JAVA_HOME PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11: /usr/games:$GRAILS_HOME/bin:$GROOVY_HOME/bin" </code>
This file was new to me on Ubuntu, I’m used to defining env vars in a .profile file. In order to get the new vars setup, source the file – ‘source environment’.
- After the previous step, the included script files with Grails needed to be changed to executable in order to run. cd into the grails directory, and then ‘chmod +x’ for both INSTALL_DIR/bin/grails and INSTALL_DIR/ant/bin/ant