Date: Dec 21, 2010 4:34 AM
Subject: MAT file takes forever to save with big object array
I have a 65k-element array of objects of a particular class.
>> whos results
Name Size Bytes Class Attributes
results 1x65000 3025921848 StrategyResultDef
When I try to save it to a MAT file I get the following error:
Warning: Variable 'results' cannot be saved to a MAT-file whose version is older
To save this variable, use the -v7.3 switch.
And the variable 'results' is not saved.
If I do:
>save -v7.3 backtesting/files/technical-obj
I do not get an error but it takes about 4 hours to save the file and its size is 1.5gb.
I want to save the results for later processing but at this rate it's easier for me to re-generate the results every time.
I will have a look at reducing the size of the structure but does anyone have any suggestions as to what is the best way to save the results like this?