Changes between Version 3 and Version 4 of CreditNotes


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Timestamp:
Oct 12, 2009, 8:52:33 PM (15 years ago)
Author:
davea
Comment:

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  • CreditNotes

    v3 v4  
    2222So the two goals are inconsistent; we can't satisfy them both.
    2323
     24We've had two "credit philosophies":
     25
     26 Credit for FLOPs performed:: this provides device neutrality (more or less).
     27 
     28 Credit for peak FLOPS * time:: this provides project neutrality.
     29
     30Neither approach is adequate by itself.
     31We need to find something in the middle.
     32
    2433== Scenarios ==
    2534
     
    3241   (say, because of its memory access pattern)
    3342
     43How much credit should the various jobs get?
     44It depends.
    3445
     46If almost all hosts are like host B,
     47then project 2's jobs should get almost 10 times as much;
     48after all, they cost most volunteers 10 times as much electricity.
     49
     50If almost all hosts are like host A,
     51then project 2's jobs should get about as much as project 1's.
     52
     53Let's try to quantify this.