MATLAB: Allocate page locked memory for output array in mex

cudacudahostallocMATLABmexmxcreatedoublematrix

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.

Best Answer

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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MATLAB: Building Mex file with Fortan

Your main problem is that you need to create the output array PLHS(1) before you access it. Also your NLHS and NRHS types are wrong. Try this:

#include <fintrf.h>
C
C Gateway routine
C
    SUBROUTINE MEXFUNCTION(NLHS, PLHS, NRHS, PRHS)
    implicit none
C mexFunction arguments:
    MWPOINTER PLHS(*), PRHS(*)
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    YPP = MXGETPR(PLHS(1))
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Best Answer

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