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Trouble writing very large files [message #62676]

Fri, 26 September 2008 13:12

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

I want to write a very large array to a file. I'm trying:

array = intarr(640,640,1073,15) ;; 13,185,024,000 bytes!

openw, lun, 'foo.dat', /get_lun
writeu, lun, array
free_lun, lun

IDL crashes when the writeu fires up.

print, !version
{ x86_64 Win32 Windows Microsoft Windows 7.0 Oct 25 2007 64
64}

The pointer seems to expand okay:

IDL> point_lun, -lun, pos
IDL> help, pos
POS LONG = 0
IDL> point_lun, lun, 640ll * 640ll * 1073ll * 15ll * 2ll
IDL> point_lun, -lun, pos
IDL> help, pos
POS LONG64 = 13185024000
IDL> point_lun, lun, 0
IDL> point_lun, -lun, pos
IDL> help, pos
POS LONG = 0

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[Message index]

		Trouble writing very large files By: Vince Hradil on Fri, 26 September 2008 13:12
		Re: Trouble writing very large files By: wlandsman on Fri, 16 January 2009 13:21
		Re: Trouble writing very large files By: Maarten[1] on Fri, 16 January 2009 06:38
		Re: Trouble writing very large files By: Juggernaut on Fri, 16 January 2009 04:53

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