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Re: Big arrays, reducing data [message #53090]

Wed, 21 March 2007 18:43

Eric Hudson
Messages: 19
Registered: June 2006

Junior Member

On Mar 21, 5:26 pm, "Jean H." <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:
> Eric Hudson wrote:
>> Hi,
>
>> I have what I hope is an easy question and then probably a hard one.
>
>> 1) I need to make some big arrays (ideally 16000^2 elements or more)
>> but find I often get "unable to allocate memory" errors. Is there
>> some way of determining (at run time) the largest array that I can
>> make? In C, for example, I'd try to allocate the memory and check for
>> whether it was allocated, then cut the array size if it wasn't. Is
>> there an equivalent technique in IDL?
>
> There is the memTest procedure made by ITTVIS that displays the 10
> biggest array that you can store. I have modified this procedure so you
> can retrieve a) the size of the biggest array you can save and b) the
> TOTAL available memory.
>
> Here is a copy of the code... note that I just made small modification
> to the header as I did not intend to distribute this code.
> The calling sequence is:
> biggestArrayInBits = availableMemory()
> or biggestArrayInBits = availableMemory(TotalAvailableMemoryInBits)
>
Just what I needed, thanks!

Eric

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[Message index]

		Re: Big arrays, reducing data By: Eric Hudson on Wed, 21 March 2007 18:43
		Re: Big arrays, reducing data By: Jean H. on Wed, 21 March 2007 14:26
		Re: Big arrays, reducing data By: Paul Van Delst[1] on Wed, 21 March 2007 12:53

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