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Speeding up TPCParametersImpl::getNearestPad in GEAR v00-13 [message #2004] Sat, 22 May 2010 00:22 Go to previous message
Messages: 78
Registered: March 2006
Location: University of Victoria
Hello all,

A detailed simulation of ion drift could spend most of it's running time in this function.

I have optimized it a bit to dramatically reduce the running time when there is only one readout module.

[ MESSAGE "Marlin"] MyElectronCloudChargeDepositPr       3.092300e+02 s in            5 events  ==> 6.184600e+01 [ s/evt.]

[ MESSAGE "Marlin"] MyElectronCloudChargeDepositPr       1.614900e+02 s in            5 events  ==> 3.229800e+01 [ s/evt.]

It should also be a bit faster when more than one module is in use.


- Jason

p.s. the new version of the file is attached. I did not do _extensive_ testing but the output of my simulation was the same before and after the change

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