99% is not an error! It is a flag that an error could not be calculated.
It needs at least 4 (better 5) independent runs to calculate a standard
deviation. If the number of runs is less than 4, the FLUKA analysis
tools print 99%. That number has no meaning, it is only a code for
"error not calculable"
Alberto
On Tue, 21 Jun 2011, mir inamul haq jeri wrote:
> Hello,
> I got the reason of the 99% error.This is because i was running only one
> batch this time while as i used to run 5 batches previously.So i would say
> that each run serves as a batch of particles and for better statistics we
> need to run as many batches as possible.I suppose that the statistical
> deviation as calculated by code results from the distribution of average
> values of each batch.I would appreciate any comments and suggestions on
> this.
> Thank you
>
> On Tue, Jun 21, 2011 at 3:16 PM, mir inamul haq jeri <mirinamulhaq_at_gmail.com
>> wrote:
>
>> Thank you for your suggestion.
>> Now the problem is that i am getting the usrbin errors only as 99% and 0%
>> ir-respective of the number of particles that i run.i have run the same file
>> previously when i was getting only few percent of errors.Although i tried it
>> for the same number of particles as well as i had done previously when i was
>> getting only 6-10% error, but now i am getting only 99% and 0%.since the
>> values of yield/stars are different and the particle fluences are also
>> different in different regions(as seen from usrbin) i think there is some
>> error done by the code in calculating the errors.
>> I will be looking forward for your suggestions
>> Thank you
Received on Thu Jun 23 2011 - 01:15:50 CEST
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