Open slava77 opened 7 years ago
A new Issue was created by @slava77 Slava Krutelyov.
@davidlange6, @Dr15Jones, @smuzaffar can you please review it and eventually sign/assign? Thanks.
cms-bot commands are listed here
@VinInn @ssekmen @mdhildreth Are we in position now to advance with this issue?
Recall that the RECO data tier was increased by 10% due to issues in FastSim with PU (#17367)
@slava77 , any update on this?
adding TRK conveners @mtosi @JanFSchulte
assign reconstruction,simulation
New categories assigned: reconstruction,simulation
@mdhildreth,@slava77,@perrotta,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks
(to refresh the status) this is still active in a way; there was a recent discussion in connection with #30544 (which remained as an RFC and closed; a more generic variant of #31217, which was merged).
@cms-sw/fastsim-l2
the point here is to make the following data members transient (again)
TrajParams=vector<LocalTrajectoryParameters> m_trajParams;
Chi2sFive=vector<uchar> m_chi2sX5; // chi2 * 5 chopped at 255
To quote a few pieces from the email thread in August 2020 (after we narrowed down that the only use case is apparently in FastTrackDeDxProducer): @slava77 :
My somewhat simplistic understanding of the fastsim use case is that FastTrackDeDxProducer can use propagated ~expected trajectory parameters instead of the actual local trajectory parameters from the fit.
@VinInn :
In very good approximation yes (One can even refit the track starting from the hit (this is done for some DQM module)...): I agree. Not "Fast" though....
assign fastsim
New categories assigned: fastsim
@mdhildreth,@sbein,@ssekmen,@lveldere,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks
@cms-sw/fastsim-l2 was there a follow up to this?
Please clarify. Thank you.
@cms-sw/fastsim-l2 any update here?
@cms-sw/fastsim-l2 any update?
this was done to get 900pre3 going and gives about 10% increase in RECO size. Follow up will need to have some changes in fastsim first.
@VinInn @ssekmen