February, 2007

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The Search for Jim Gray Continues

All Things Distributed

As Mike Olsen just wrote on the Tenacious Search weblog, today was the first day that action could be taken on the boats found in the satellite and ER-2 streams. Bad weather has kept any aerial search parties on the ground until now. This morning two planes were dispatched to locations derived from images coordinates combined with drift models.

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Half a Million Assignments Completed.

All Things Distributed

Over 530,000 Mechanical Turk assignments have been completed by more than 12,000 volunteers in the search for Jim Gray. We need a little more of a push and then all the images will have been processed. A team of experts lead by Alex Szalay of John Hopkins University has been working through the thousands of images marked for further investigation.

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Turkers Working Hard on the Search for Jim Gray

All Things Distributed

It is now 3 PM on Sunday afternoon and the group of volunteers in thethe search for Jim Gray has worked their way through almost 100,000 assignments since Friday 5 PM. Since then we have seen over 6000 individual workers completing anywhere from 1 to almost a 1000 assignments. And there are still more to go.

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High Altitude Search for Jim Gray

All Things Distributed

We have now added the data captured by the NASA ER-2 plane yesterday over the ocean area outside of San Francisco. We were very fortunate that this flight was scheduled for yesterday and that the NASA folks were interested in having it capture these images. We have been able to split them just like yesterday’s satellite images and create HITs (Human Interface Tasks) from them.

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On the Reliability of Hard Disks

All Things Distributed

Today in the opening session of FAST there are two papers on the studies of hard disk reliability. Both these papers present very interesting results that blow away some of the common assumptions in failure modelling of systems. Bianca Schroeder and Garth Gibson from CMU in their paper Disk Failures in the Real World: What Does an MTTF of 1,000,000 Hours Mean to You?

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The Conference Season is Opening Up Again

All Things Distributed

I have had the luxury of almost 4 months with any real conferences. Don’t get me wrong it is not that I do not enjoy the public speaking side of my job; it is just that I experience it always as rather disruptive. It is great to focus for a while and get things done.

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Help Find Jim Gray

All Things Distributed

Computer science icon Jim Gray mysteriously disappeared after a solo trip with his sail boat outside San Francisco Bay. The coast guard has been searching for 4 days but has not been able to locate anything, not even debris. On Thursday 3 private planes searched through the coastal areas and they also returned unsuccessful.

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