[Gate-users] Any limitations for GATE RAM usage?

Marcin Balcerzyk m.balcerzyk at pluri.ucm.es
Tue Jul 10 12:00:37 CEST 2012

Hi Matt. 


It may sound obvious limitation, but to run anything which handles in RAM 48
GB you need 64-bit system and a program run in 64-bit version.  I expect
that to do it successfully you would need a RAM 3 times of the objects you
run (150 GB). 32 bit systems are limited to use somewhat less than 4 GB of
RAM (in Windows it is 1.5 GB, in some others it is 2 GB). I think
installation of Gate is prepared to be compiled for 32 bit system by
default, and for some people to compile it on 64 bit system to be 64 bit
application was a bit of a problem while selecting proper system libraries.
vGate is compiled in 32 bit version. 


Maybe the option for you is to run the simulation on Gate VIP
egee-admin at creatis.insa-lyon.fr which is a nice grid, preparing it first on
smaller size objects.


I hope that helps.


Marcin Balcerzyk

Universidad de Sevilla.


Message: 2

Date: Mon, 09 Jul 2012 12:16:02 -0400

From: Matthew Belley < <mailto:mdb52 at duke.edu> mdb52 at duke.edu>

To:  <mailto:gate-users at lists.opengatecollaboration.org>
gate-users at lists.opengatecollaboration.org

Subject: [Gate-users] Any limitations for GATE RAM usage?

Message-ID: < <mailto:4FFB03C2.8000400 at duke.edu> 4FFB03C2.8000400 at duke.edu>

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Dear Gate Users,


I am currently using voxel models (ANALYZE format) for dosimetry
applications.  It is my understanding that the voxel geometry is loaded into
memory (RAM) when the simulation runs.


Aside from the hardware that I am running on, is there any limitation to the
amount of RAM that GATE can use for a simulation? I am hoping to use models
that are up to 48GB in size...






Matthew Belley


Doctoral Student

Medical Physics Graduate Program, Duke University Duke Radiation Dosimetry
Laboratory, Duke University Medical Center Durham, North Carolina 27705




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