Allocate page locked memory for output array in mex?

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Justin
Justin 2012-4-19
评论： James Tursa 2019-2-11
Hello,
I have something like this:
plhs[0] = mxCreateDoubleMatrix(ref_row, ref_col, mxREAL);
I would like to know if it's possible to replace this function with a cudaHostAlloc function instead. Thanks.

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James Lebak
James Lebak 2012-4-19
Justin,
Unfortunately this isn't possible in MATLAB today. The function mxCreateDoubleMatrix returns an mxArray, not a raw pointer, and mxArrays that get returned to MATLAB need to be freed by MATLAB.
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James Tursa
James Tursa 2019-2-11
MATLAB still needs to allocate its own memory for mxArray variables. Within a mex routine, that means using API functions or call backs into other MATLAB functions.

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