<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yiv5901154604yui_3_16_0_1_1443704826828_3081" class="">Hello All,</div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3082" class=""><br id="yiv5901154604yui_3_16_0_1_1443703604463_11648" class=""></div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class="">I have Gate "develop" version and at the same time geant4.10.1.0 and root_v5.34.32 on the GPU. My operating system is Linux Mint 17.2 . </div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class=""><br id="yiv5901154604yui_3_16_0_1_1443703604463_11652" class=""></div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class="">I am triying to simulate a linac head to get Phase Space of photons. Just for an example I run Gate for a basic geometry which include only electron beam, target filter and Phase space plane inside a linac geometry. When I run Gate two or more times for same "number of primaries" I got the exactly the same Phase Space distributions (histogram of Ekine completely identical). But I am using "/gate/random/setEngineSeed auto" command and according to the documentation that should give me the different seed every time when I run it. I would expect some random differences between PhS's from different runs.</div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class=""><br></div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class="">Does anyone have any idea about this issue? Thank you in advance.</div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class=""><br id="yiv5901154604yui_3_16_0_1_1443703604463_11660" class=""></div><div id="yiv5901154604yui_3_16_0_1_1443704826828_3083" dir="ltr" class="">Hediye Acun</div></div></body></html>