where to find memory limit

Hi,

I’m using the example code of dsp.DigitalUpConverter System object to make some tests: upconverter

I found that an "Out of memory" error occurs if 'InterpolationFactor' is set to be 10000. I know there must be some limits on this parameter, but where to find such information?

Owen

Answer 1

[Azzi Abdelmalek]

Type

memory

Answer 2

[Julia]

Hi,

I would rather say that the limits are your OS and your ram memory.

You can execute the

memory

command to find out about your ram properties. The more the better :)

So if you want to know how large 'InterpolationFactor' can get without an error, I think you can only try to run the program with different values until you reach the limit.

Answer 3

[Adam]

[userview systemview] = memory;

gives the full output of the memory command. I use this in a custom function to get the maximum memory that I can use for processing at any given time based on

systemview.PhysicalMemory.Available

The systemview output contains 3 structs each with information in that you may find useful. I don't know anything about the function you are using though.

I use this in conjunction with a 'sizeof' function I wrote which works like the C++ function to give me the size in bytes of my data type so that I can work out what size of matrix of a given data type I can load in to process on, including, of course, an estimate of any result matrices and temporary matrices my algorithm will require. That is less easy for a Matlab toolbox function though unless you have a very good understanding of how it works and how much memory it uses for a given input.