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<DIV>hello, Fernando and Bassim</DIV>
<DIV> </DIV>
<DIV> I also have met your says
problems that writing ROOT files gets slower and slower as the file increases£¬</DIV>
<DIV>and I have checked what have happed, then I found that sometimes
it have memory leak as programs </DIV>
<DIV>run when your write root files. I never encounter this problems when I use
Geant4 to develop my programs.</DIV>
<DIV>So, I have no idea with it. I don't know wheter this will give you any
help.</DIV>
<DIV> </DIV>
<DIV>wishes!</DIV>
<DIV>Shelley</DIV>
<HR style="HEIGHT: 1px; WIDTH: 210px" align=left color=#b5c4df SIZE=1>
<DIV><SPAN>xcao</SPAN></DIV>
<DIV> </DIV>
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<DIV><B>From:</B> <A
href="mailto:gate-users-request@lists.opengatecollaboration.org">gate-users-request</A></DIV>
<DIV><B>Date:</B> 2013-10-18 21:31</DIV>
<DIV><B>To:</B> <A
href="mailto:gate-users@lists.opengatecollaboration.org">gate-users</A></DIV>
<DIV><B>Subject:</B> Gate-users Digest, Vol 89, Issue 21</DIV></DIV></DIV>
<DIV>
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<DIV>Today's Topics:</DIV>
<DIV> </DIV>
<DIV> 1. Re: GATE on cluster (Fernando Rannou)</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>----------------------------------------------------------------------</DIV>
<DIV> </DIV>
<DIV>Message: 1</DIV>
<DIV>Date: Fri, 18 Oct 2013 11:01:33 -0300</DIV>
<DIV>From: Fernando Rannou <fernando.rannou@usach.cl></DIV>
<DIV>To: bassim aklan <bassim.aklan@imp.uni-erlangen.de></DIV>
<DIV>Cc: "<gate-users@lists.opengatecollaboration.org>"</DIV>
<DIV><Gate-users@lists.opengatecollaboration.org></DIV>
<DIV>Subject: Re: [Gate-users] GATE on cluster</DIV>
<DIV>Message-ID:</DIV>
<DIV><CAN3A8B3Zk2WbUj6VXRtWcr9=f2R-K_ZN6MZijnHjhmsGP+E4fw@mail.gmail.com></DIV>
<DIV>Content-Type: text/plain; charset="iso-8859-1"</DIV>
<DIV> </DIV>
<DIV>Hello Bassim</DIV>
<DIV> </DIV>
<DIV>I do not know whether I understand, but we have found in very large</DIV>
<DIV>simulations,</DIV>
<DIV>that writing ROOT files gets slower and slower as the file increases.</DIV>
<DIV>I asked ROOT people but they told me that that should not happen... but it</DIV>
<DIV>happens</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>I attach a plot that shows how simulation grows much faster when ROOT output</DIV>
<DIV>is selected instead of ASCII. This is part of the paper we just published</DIV>
<DIV>on ParGate.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Fernando</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>On Fri, Oct 18, 2013 at 6:45 AM, bassim aklan <</DIV>
<DIV>bassim.aklan@imp.uni-erlangen.de> wrote:</DIV>
<DIV> </DIV>
<DIV>> Hello GATE users,</DIV>
<DIV>></DIV>
<DIV>> I am simulating now a 20-cm cylindrical phantom (length: 17.8 cm ) filled</DIV>
<DIV>> with 18-F with an activity of 444 MBq. I installed GATE v6.1 on the cluster</DIV>
<DIV>> and all my simulations are running on 70 computing nodes with 8 CPUs. The</DIV>
<DIV>> output files of the simulation are root files with single, coincidence and</DIV>
<DIV>> finalCoincidence trees. My jobs on the cluster cause a very high load on</DIV>
<DIV>> the fileserver during GATE simulation. I attached a PNG-Image of the</DIV>
<DIV>> cluster's In/Output evaluation of some of my jobs. Did anyone of GATE</DIV>
<DIV>> users or developer face such problem before or this issue at least is</DIV>
<DIV>> familiar by someone. I would be thankful if someone can share with me his</DIV>
<DIV>> experience in order to solve this issue</DIV>
<DIV>></DIV>
<DIV>> --</DIV>
<DIV>> Bassim Aklan, MSc.</DIV>
<DIV>> Institute of Medical Physics - Section for MR Imaging</DIV>
<DIV>> University of Erlangen-Nuremberg</DIV>
<DIV>> Henkestr. 91</DIV>
<DIV>> 91052 Erlangen, Germany</DIV>
<DIV>> phone: +49-(0)9131/85-25545 bassim.aklan@imp.uni-erlangen.de</DIV>
<DIV>></DIV>
<DIV>></DIV>
<DIV>> _______________________________________________</DIV>
<DIV>> Gate-users mailing list</DIV>
<DIV>> Gate-users@lists.opengatecollaboration.org</DIV>
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