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Old 2003-12-30, 11:22   #1
edorajh
 
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Oct 2003
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Default What to do after my DCs are confirmed?

I run one DC test and will run more on machine that has "Error: Round Off" error doing first time LL. My first DC is confirmed. If I get several more DCs confirmed what would be the best way to go:

1. to start stoped first time LL test from begining
2. to start from where I stop first time LL test (21%) when it report "Error: Round Off" errors (will chance for bad result (with "Error: Round Off" errors) be the same even if I get confirmed DCs?)
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Old 2003-12-30, 14:36   #2
GP2
 
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If you get several confirmed DCs, that's a general indication that your machine is good and not error-prone.

The answer to your question is yes. If your machine is good (non error-prone), then there is much less chance of a bad result even if you get an error reported.

For instance, here are some error rates for non-reproducible round off errors:

Code:
err code	   bad	  good	bad/total
--------	   ----	  -----	------	----
00000100            274     445         0.381
00000200             83      47         0.638
00000300             40      15         0.727
However, there is a big difference in error rates for these error codes depending on whether the machine overall is error prone or not

Code:
Machines with overall error rate >= 0.333

00000100            120      26         0.822
00000200             33       5         0.868
00000300             15       0         1.000
Code:
Machines with overall error rate < 0.333

00000100            154     419         0.269
00000200             50      42         0.543
00000300             25      15         0.625

Code:
Machines with overall error rate >= 0.100

00000100            193      68         0.739
00000200             65       9         0.878
00000300             29       1         0.967
Code:
Machines with overall error rate < 0.100

00000100             81     377         0.177
00000200             18      38         0.321
00000300             11      14         0.440
Note 00000100 means 1 "non-disregardable" round off error, 00000200 means 2, and so forth.

However, from your other thread, you said you got "several" errors like this. So even if your machine successfully completes 90% of its double checks, I'd say you have at least a 40% chance of a bad result for your stopped LL test.

Last fiddled with by GP2 on 2003-12-30 at 14:37
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Old 2003-12-30, 15:28   #3
edorajh
 
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Thanks for explanation! I will restart my LL test from begining.
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