Monday, November 22, 2010
Presentations from Lindholmen Software Development Day 2010
All presentations form the Lindholmen Software Development Day 2010 are now up on the web site. I know we were filmed as well, but I don't know when they are finished editing.
"Start with a Walking Skeleton"
I try to explain to my students that they should start with structure before programming any features. Get the OS to run with some reasonable tasks, exchange some information/messages/... between sub-systems or processes, etc.
There seems to be a proper term for this: Start with a Walking Skeleton. Apparently the term originates with Alistair Cockburn. It is often used in conjunction with the Incremental Architecture pattern.
I feel rather stupid of not knowing what others had done before, but at least I know of the concepts...
It says that this is a useful strategy for large systems. I think it is quite useful for small systems as well, especially if you are not very familiar with the features to be developed. A walking skeleton allows you to try different things in a running platform and with decent version control you can always reverse to something that is running, even if it has little customer value. And the effort of making the skeleton work is never wasted.
There seems to be a proper term for this: Start with a Walking Skeleton. Apparently the term originates with Alistair Cockburn. It is often used in conjunction with the Incremental Architecture pattern.
I feel rather stupid of not knowing what others had done before, but at least I know of the concepts...
It says that this is a useful strategy for large systems. I think it is quite useful for small systems as well, especially if you are not very familiar with the features to be developed. A walking skeleton allows you to try different things in a running platform and with decent version control you can always reverse to something that is running, even if it has little customer value. And the effort of making the skeleton work is never wasted.
Friday, November 19, 2010
Ranking of Software Engineering Journals
I got a link to a ranking of the top Software Engineering Journals from my colleague Robert Feldt.
This is based on how prestigious these journals are in the scientific community based on some bibliometric index. But I would also like to see a similar ranking of how prestigious a journal is in the community of practitioners. Would it be possible to identify an index for that?
This is based on how prestigious these journals are in the scientific community based on some bibliometric index. But I would also like to see a similar ranking of how prestigious a journal is in the community of practitioners. Would it be possible to identify an index for that?
Wednesday, November 17, 2010
ICES-INCOSE Architecting Seminar - presentations now on-line
The material from the ICES-INCOSE-seminar: Architecting Embedded Systems is now available.
There is also a summary of of the day, including the ending panel debate, which I personally found very interesting.
There is also a summary of of the day, including the ending panel debate, which I personally found very interesting.
Wednesday, November 10, 2010
More on quality attributes
Not so long ago I wrote about quality attributes. A friend on facebook gave a tip about a blog post on Software Quality Characteristics 1.0. The bloggers claim it is "the perhaps most powerful public two-page document in the history of software testing." I don't know about that but it sure is a useful document.
Monday, November 8, 2010
Trends and challenges in architecting embedded systems
Architecting is not even a proper word (I even heard someone at SPLC suggest all papers with architecting in the title should be rejected) , but is quite popular nevertheless. I think it has to do with Swedish allows you to construct a verb from just any noun, and still making sense....
I was in Stockholm to talk about architecting automotive software at an ICES-INCOSE seminar. You can find the slides from the other presenters (and mine in PDF) at the ICES homepage.
Staffan Persson is an architect from Scania and he presented a very interesting view on architecting in lean organisations (an introduction by Staffan can be found in Lean Magazine #5).
The finishing panel debate was interesting. I don't know if the notes from that will be published on the site, but I have a few reflections when thinking about it afterwards:
I was in Stockholm to talk about architecting automotive software at an ICES-INCOSE seminar. You can find the slides from the other presenters (and mine in PDF) at the ICES homepage.
Staffan Persson is an architect from Scania and he presented a very interesting view on architecting in lean organisations (an introduction by Staffan can be found in Lean Magazine #5).
The finishing panel debate was interesting. I don't know if the notes from that will be published on the site, but I have a few reflections when thinking about it afterwards:
- One trait of a good architect is to freely move between different levels of abstraction. An architect needs to see the whole picture all the time, but he also needs to be able to dive down into details, "the devil is in the details".
- You can teach, and learn, fundamental knowledge for an architect, such expressing quality attributes, be familiar with architectural styles and patterns, know architecture platforms such as AUTOSAR or .NET, and being able to express designs in various views etc. But there are also another set of key skills that are very hard to teach, such as understanding the company culture (the common value ground), earn respect, know not only what technical parts that are affected by various decisions, but also who. So it would be difficult to move form one organisation to another an be productive as an architect.
- An architect needs to be comfortable with uncertainty. I know I am not, and this is one of my weaker points as an architect. And how do you assure other stakeholders that one should not make a decision now since we don't know enough?
Monday, November 1, 2010
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