[RC5] Scheduling d.net

C. Smith csmith at nikondev.com
Wed Mar 4 10:03:47 EST 1998


I perfer the more democratic approach of these are the projects we have, 
pick whichever one(s) you wish to work on. Then, based on the projects
will all get finsihed proportionally to their complexity and their 
interest.

Charlie

In reply to Thomas Womack (thomas.womack at merton.oxford.ac.uk)  who on 
3/3/98 8:02 PM said:

>>b) Is anyone else concerned about the multi-project model for v3?  d.net
>has
>>been unstoppable, in the past, because everyone interested in the idea has
>>been unified in the direction of a solution of one problem.  If everyone is
>>able to pick a different project, then won't the power of d.net be
>>splintered into a whole bunch of weaker factions?
>
>Yes - you've just discovered why supercomputers tend to run in a batched
>processing mode rather than a multi-tasking one. On the other hand,
>supercomputer applications tend to have fairly good estimates for how long
>they'll take (computer time is expensive), and you might well partition a
>large system so that a big job runs for a long time on 3/4 of it whilst
>small test jobs run in quick succession on the rest.
>
>On a third hand, consider three jobs, A, B and C, which would take one, two
>and three months respectively.
>
>Do C; do B; do A : C done after 3 months, B done after 5 months, A done
>after 6 months.
>
>Split the net into six groups 1..6.
>
>First 3 months : 12 do A, 34 do B, 56 do C. A gets done after 3 months. B
>has had a month done; C has had a month done.
>Next two months : 123 do B, 456 do C. There's a month left for B; there's
>half the net working on it, so it takes two months. C has now had two months
>done.
>Last month : 123456 do C and finish it off in a month.
>
>So A has been done after 3 months, B after 5 months, C after 6 months. The
>factional approach works quite well if there's no consensus on the
>importance of the tasks; if A turns out to be important, it'll get scheduled
>first and get done in a month.
>
>Tom
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