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Re: simpleEvtGen default EvtRandomEngine [message #9172 is a reply to message #9171]

Mon, 10 August 2009 21:40

Bertram Kopf
Messages: 110
Registered: March 2006

continuous participant

From: *pools.arcor-ip.net

Hi Marius,

mertens wrote on Mon, 10 August 2009 18:32

As the EvtGen EvtRandom interface is extremely simple (basically just the random() function which returns a random double) I was wondering if the more powerful Ranecu based framework including random number management is as easy to be understood and plugged into this single interface class as (just as a random example) one of the PRNGs from Boost?
My motivation here is the learning curve. Getting random numbers from a boost library function is very easy (and would be sufficient for how I invoke EvtGen) but maybe at a later stage the management functions might be helpful?

As you can see in the class EvtRandomEngine the function random() is defined as a virtual method. That means that you simple have to write a new class derived from EvtRandomEngine and to overwrite this virtual function. In principle you can specify a specific random engine there. In addition you have to set your new defined engine via the static function "EvtRandom::setRandomEngine(newEngine)". An example can be found in the PandaRoot EvtGen package: the test program "ggEvtGen.cc" makes use of the CLHEP-generator "JamesRandom".

Cheers,
Bertram.

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[Message index]

		simpleEvtGen default EvtRandomEngine By: Marius Mertens on Thu, 06 August 2009 17:57
		Re: simpleEvtGen default EvtRandomEngine By: StefanoSpataro on Thu, 06 August 2009 18:03
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Sat, 08 August 2009 12:57
		Re: simpleEvtGen default EvtRandomEngine By: StefanoSpataro on Sat, 08 August 2009 13:01
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Sat, 08 August 2009 15:09
		Re: simpleEvtGen default EvtRandomEngine By: StefanoSpataro on Sat, 08 August 2009 16:02
		Re: simpleEvtGen default EvtRandomEngine By: Bertram Kopf on Mon, 10 August 2009 15:16
		Re: simpleEvtGen default EvtRandomEngine By: Jens Sören Lange on Mon, 10 August 2009 15:48
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Mon, 10 August 2009 18:05
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Mon, 10 August 2009 16:20
		Re: simpleEvtGen default EvtRandomEngine By: Bertram Kopf on Mon, 10 August 2009 18:02
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Mon, 10 August 2009 18:32
		Re: simpleEvtGen default EvtRandomEngine By: Bertram Kopf on Mon, 10 August 2009 21:40
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Mon, 10 August 2009 22:41
		Re: simpleEvtGen default EvtRandomEngine By: Bertram Kopf on Tue, 11 August 2009 11:31
		Re: simpleEvtGen default EvtRandomEngine By: Marius Mertens on Tue, 11 August 2009 11:50
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 19 August 2009 16:26
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: StefanoSpataro on Wed, 26 August 2009 13:49
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 26 August 2009 14:00
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: StefanoSpataro on Wed, 26 August 2009 15:32
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 26 August 2009 16:04
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: StefanoSpataro on Wed, 26 August 2009 16:14
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 26 August 2009 16:26
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Elwin Dijck on Wed, 26 August 2009 17:22
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 26 August 2009 17:29
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: StefanoSpataro on Wed, 26 August 2009 17:32
		Re: simpleEvtGen default EvtRandomEngine - PndMTRandomEngine Suggestion By: Marius Mertens on Wed, 26 August 2009 17:22

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