<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><font size="3" class="">Hi Ibrahim</font><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">The maximum number of primaries you can have is 2^(32-1) because Gate deals with 32-bit variable range (~2.1 billion).</font></div><div class=""><font size="3" class="">In case you want to run higher number of primaries, you can split your simulations and then merge them later on.</font></div><div class=""><font size="3" class="">I guess there are some available tools (in GateContrib/GateTools) to do the splitting and merging.</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">Hope this helps.</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">Regards.</font></div><div class=""><font size="3" class="">Gunjan</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><div class=""><br class=""><div class="">
<div style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none; color: rgb(0, 0, 0); caret-color: rgb(0, 0, 0);" class=""><br class=""><font color="#0433ff" class="">---------------------------------------------------------------------------------------------- </font><br class="">Gunjan Kayal<font color="#0433ff" class=""> |</font> PhD Scholar <br class=""></div><br style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none; 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<div><br class=""><blockquote type="cite" class=""><div class="">On 23 Oct 2021, at 17:00, IBRAHIM AIT OUAGGOU <<a href="mailto:ibrahim.aitouaggou@ump.ac.ma" class="">ibrahim.aitouaggou@ump.ac.ma</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="auto" class="">Hello everyone <div dir="auto" class=""><br class=""></div><div dir="auto" class="">I m asking for help, I m a beginner in using Gate and use it right now to simulate pdd and profils of photon beams in radiotherapy, the problem I had is in the definition of the number of primaries, every time I want make it bigger the simulation crashes, right now I couldn't exceed 2 billion particle and once I try to use a bigger number it crashes without knowing the causes.</div><div dir="auto" class="">I ll be grateful if I receive advice from you to remedy this problem </div><div dir="auto" class=""><br class=""></div><div dir="auto" class="">Best regards</div></div>
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