I've read posts in the past requesting a 64-bit version of MoI, but never had a problem with running out of memory myself until today! Had no problem loading and displaying an 800MB 3DM file created by Rhino (Task Manager said MoI was using 2.9GB of memory). However when I went to create an OBJ file, I got the out of memory message.

Al Greynolds

Hi Al, unfortunately there's a considerable amount of work involved in producing a 64-bit version so it's not likely to happen anytime soon.

In the meantime there are some settings you can adjust to reduce memory consumption on heavy files, see this previous post for some details:
http://moi3d.com/forum/index.php?webtag=MOI&msg=5322.2

If you adjust the display settings as mentioned there ("Mesh angle" with a rougher value like 25 degrees and uncheck "Add detail to inflections"), that will make a coarser display mesh and use less memory for the loaded file. The default display settings are more tuned for a high quality display but that also makes for excess memory consumption when high detailed models are involved.

- Michael

As workaround just export chunks of the model, rather all of it at once.

I'm sure in time 64 bit MoI will come.

Actually I was able to generate an OBJ file with an even finer mesh than the default by saving memory and running MoI in batch mode, i.e. executing it from a Command Prompt window with the following script as an argument:

var FileName = 'biggie.3dm';
var gd = moi.geometryDatabase;
moi.settings.igesJoinOnImport = false;
gd.open( FileName, true );
OBJFileName = FileName.substr( 0, FileName.lastIndexOf('.') +1 ) + 'obj';
gd.saveAs( OBJFileName, 'NoUI=true;Output=quads;Angle=10' );
gd.fileNew( true );
moi.exit( true );


Al