Changes between Version 3 and Version 4 of CreditNotes

Author:

davea (IP: 71.139.183.60)

Timestamp:

10/12/09 20:52:33 (1 month ago)

Comment:

--

CreditNotes

@@ -22 +22 @@
-So the two goals are inconsistent; we can't satisfy them both.
-
+We've had two "credit philosophies":
+
+ Credit for FLOPs performed:: this provides device neutrality (more or less).
+ 
+ Credit for peak FLOPS * time:: this provides project neutrality.
+
+Neither approach is adequate by itself.
+We need to find something in the middle.
+
-== Scenarios ==
-
-   (say, because of its memory access pattern)
-
+How much credit should the various jobs get?
+It depends.
-
+If almost all hosts are like host B,
+then project 2's jobs should get almost 10 times as much;
+after all, they cost most volunteers 10 times as much electricity.
+
+If almost all hosts are like host A,
+then project 2's jobs should get about as much as project 1's.
+
+Let's try to quantify this.