How to SAVE data to disk in a background thread?
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Has anyone figured out a way to run the SAVE command in a background 'thread', so that MATLAB can keep on running code while the file is getting written to the disk?
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Jan
am 13 Jan. 2013
You can call a MEX-function, which opens a new thread, and the main thread returns to Matlab. The thread running in the background is not allowed to call any Matlab functions, so anything starting with "mx..." and "mex..." must be avoided. When you want to write a binary file, fwrite is fine.
You have to be sure, that the data are not changed during writing. E.g. a pointer to the data of a Matlab array might lead to inconsistencies, when the data are modified or free'd during the writing. But this concerns all multi-threading applications, such that I assume, that you have solved this already.
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Jan
am 14 Jan. 2013
I cannot imagine that this could be faster than doing this in a single-threaded application. You can create a standalone application, which is able to save MAT files. Perhaps you can forward the values using http://www.mathworks.com/matlabcentral/fileexchange/28572-sharedmatrix.
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Image Analyst
am 14 Jan. 2013
I don't have it, but doesn't the Parallel Computing Toolbox have that capability?
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