sherpa is hosted by Hepforge, IPPP Durham
close Warning: Can't synchronize with repository "(default)" (/hepforge/svn/sherpa does not appear to be a Subversion repository.). Look in the Trac log for more information.
Modify

Opened 13 years ago

Closed 13 years ago

Last modified 10 years ago

#144 closed defect (fixed)

Max_Epsilon seems broken

Reported by: Steffen Schumann Owned by: Frank Siegert
Priority: blocker Milestone:
Component: Unknown Version: 0.trunk
Keywords: Cc: Stefan Hoeche

Description

Whenever I want to use Max_Epsilon parameter, with the lastest trunk version the generation of unweighted events chrashes with

Process_Group::OneEvent(): Cannot select any process.

Looks like the modified maxima are not properly accounted for, in fact the local sum of weights for all individual processes is indeed smaller than the global value Process_Integrator::SelectionWeight returns. If we want to make Max_Epsilon different to 1 by default this is a critical problem.

Attachments (0)

Change History (6)

comment:1 Changed 13 years ago by Frank Siegert

Version: 1.2.30.trunk

comment:2 Changed 13 years ago by Steffen Schumann

Owner: changed from support@sherpa-mc.de to Frank Siegert

r16858 still works fine, commit 16880 seems to be the critical one. FrankS is going to check this.

comment:3 Changed 13 years ago by Frank Siegert

Cc: Stefan Hoeche added
Priority: criticalblocker
Status: newassigned

Yep, this originally comes from c16843 (on branches/enhance) where the event generation was unified for weighted/unweighted and above all the process selection was switched to use the maximum instead of the total xs. Problem was that the maxima of the group were not correctly updated after the single ones were reduced according to maxeps. This should be fixed on trunk in r17093. Steffen, could you test this, and Stefan, could you take a look whether that looks correct to you? Thanks.

comment:4 Changed 13 years ago by Steffen Schumann

works for me! thanks.

comment:5 Changed 13 years ago by Stefan Hoeche

Resolution: fixed
Status: assignedclosed

Solution looks perfect to me.

comment:6 Changed 10 years ago by Stefan Hoeche

Milestone: rel-1.3.0

Milestone rel-1.3.0 deleted

Modify Ticket

Change Properties
Action
as closed The owner will remain Frank Siegert.

Add Comment


E-mail address and name can be saved in the Preferences.

 
Note: See TracTickets for help on using tickets.