<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi All,<div class=""><br class=""></div><div class=""> For those interested in running HDGeant4 on OS X, I have managed to do this on OS X 10.11 (El Capitan).</div><div class="">I had to use the latest version of Geant 4 (10.03.p1). I made a branch containing the source called</div><div class="">“davidl_OSX”. Once you check it out, there will be a README.OSX file and a GNUmakefile.OSX that</div><div class="">should help you get it running.</div><div class=""><br class=""></div><div class=""><a href="https://github.com/JeffersonLab/HDGeant4/blob/davidl_OSX/README.OSX" class="">https://github.com/JeffersonLab/HDGeant4/blob/davidl_OSX/README.OSX</a></div><div class=""><br class=""></div><div class="">It is worth noting that a few changes to the HDGeant4 source were required to get this to compile and run.</div><div class="">I have notified Richard with details of all of these so he can merge them into the master at some point.</div><div class="">In the meantime, you can play with the branch.</div><div class=""><br class=""></div><div class="">One other thing of interest regarding this: I noticed it takes a couple of minutes to start processing events.</div><div class="">You can avoid this by setting GEOMOPT 0 in your control.in file. The downside is that you will take a 30-40%</div><div class="">hit in the processing rate. For me, this translated to a gain in time for less than about 26k bggen events,</div><div class="">but that is for my specific hardware running 8 threads.</div><div class=""><br class=""></div><div class="">Regards,</div><div class="">-David</div></body></html>