Changes between Version 5 and Version 6 of CreditNew

Author:

davea (IP: 128.32.18.181)

Timestamp:

11/03/09 11:38:32 (3 weeks ago)

Comment:

--

CreditNew

@@ -189 +189 @@
-== Host normalization ==
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-To ensure this, for each application A we maintain the average VNPFC*(A),
-and for each host H we maintain VNPFC*(H, A).
-"claimed credit"
+'''claimed credit'''
-{{{
-VNPFC(J) * (VNPFC*(A)/VNPFC*(H, A))
-}}}
+
+There are some cases where hosts are not sent jobs uniformly:
+ * job-size matching
+ * GPUGrid.net's scheme for sending some (presumably larger)
+   jobs to GPUs with more processors.
+In these cases we must scale
-
-Notes:
-   than average.
- * VNPFC* is averaged over jobs, not hosts.
- * This assumes that all hosts are sent the same distribution of jobs.
-   There are two situations where this is not the case:
-   a) job-size matching, and b) GPUGrid.net's scheme for sending
-   some (presumably larger) jobs to GPUs with more processors.
-   This can be dealt with using app units (see below).
-
-== Computing averages ==
-   and we can't let this mess up the average.
-
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+
-although the current system doesn't use it.
-
-So for each quantity we maintain the following object:
-{{{
+#define MIN_SAMPLES     20
+        // after this many samples, use exponentially averaged version
+#define SAMPLE_WEIGHT   0.001
+        // new samples get this weight in exp avg
+#define SAMPLE_LIMIT    10
+        // cap samples at recent_mean*10
+
-struct STATS {
-    int nsamples;
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-    void update(double sample) {
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-    }
-};