Monthly Archives: June 2006

I’m very close to a full DRMAA implementation for Xgrid (still just in Objective-C), or as full an implementation as is currently possible with Xgrid. The only major missing feature right now is bulk jobs. The biggest hurdle has been … Continue reading →

The 1.0 DRMAA spec wasn’t completely clear on multithreaded behavior, so I went to the drmaa-wg mailing list to ask a couple questions: What happens if two threads try to wait simultaneously for the same job to complete? Do they … Continue reading →

I just put together that preference pane for controlling XgridDRMAA grid selection. It’s pretty straightforward: it lets you browse for a grid advertised via Zeroconf/Bonjour, or specify a hostname/IP address, or just choose to use the standard Xgrid environment variables, … Continue reading →

Now in place: waiting for jobs to complete. How it works: after a job starts, it’s added to a list of jobs being monitored, and is observed via Cocoa Key-Value Observing for its state key path. An NSConditionLock object is … Continue reading →

Today: I implemented the job status and control functions in DRMAA. Pretty straightforward: for status, I map the Xgrid status to a corresponding DRMAA value (this mapping having been run by the xgrid-users list). For control, I just grab the … Continue reading →

Two pieces of good news today. First, the honorable Charlotte W. Woolard deemed my predicament of having multiple large software projects, a Monday Summer of Code check-in deadline, and a San Francisco move-out date of August 1 worthy of getting … Continue reading →

I finally got around to making the DRMAA code actually, um, talk to Xgrid. Right now all it does is open and close connections, but everything else will follow pretty much the same pattern. From the client code, it’s very … Continue reading →

The DRMAA specification includes the possibility of having the API return a list of “contacts”—identifiers for different grids. This seemed like a pretty natural place to return a list of controllers/grids discovered via Bonjour, so I went ahead and implemented … Continue reading →

It’s been a little slow going the last few days with my sister and another friend in town, but I’ve added a few little touches: OCUnit Testing There’s really no complex code to test yet, but I added a OCUnit … Continue reading →