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memory question

• To: mathgroup at smc.vnet.net
• Subject: [mg91198] memory question
• From: Jan Schmedes <jasch at crustal.ucsb.edu>
• Date: Sat, 9 Aug 2008 07:45:23 -0400 (EDT)

Dear group,

I am running Mathematica 6.0.3 on a Mac Pro with 4 Gig memory. I have  
fortran binary files that I can read in correctly (numbers of order  
10^6) using Import[...,"Real32"]. But for larger problems, the size  
of the binary file is about 80 Mb, all memory is used (if i hit top,  
VSIZE is 17G)  and only 2% of the CPU are used, so it basically can  
not handle the file. Is there a way to decrease the precision at  
which the file is read in, for my purpose the precision does not have  
to be very high?

Thank you

Jan