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Re: 32 vs 64 bit idl memory acces [message #79167]

Tue, 07 February 2012 09:27

Lajos Foldy
Messages: 176
Registered: December 2011

Senior Member

On Feb 7, 5:21 pm, Christopher <c.bonn...@gmail.com> wrote:
> I running snow-leopard 64 bit on mac with i7 intel processor.
> Am then right in assuming idl(32 bit) can acces more then ~4gb of
> memory?

32 bit programs use 32 bit pointers. Memory is byte addressable, so 32
bit pointers can address 4GB at most. You can determine the maximum
size of available memory experimentally by running MEMTEST (http://
www.exelisvis.com/Support/HelpArticleDetail/ArticleId/3441/P rogram-to-assess-memory-fragmentation-memtest-pro.aspx).

Use 64 bit IDL, I think it runs fine on snow leopard and you'll be
able to access all your memory.

regards,
Lajos

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[Message index]

		Re: 32 vs 64 bit idl memory acces By: Lajos Foldy on Tue, 07 February 2012 09:27
		Re: 32 vs 64 bit idl memory acces By: c.bonnett on Tue, 07 February 2012 08:21
		Re: 32 vs 64 bit idl memory acces By: Lajos Foldy on Tue, 07 February 2012 05:25
		Re: 32 vs 64 bit idl memory acces By: Kenneth P. Bowman on Wed, 08 February 2012 09:00

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