Problem with mxGetScalar in mex function cuda

Hi *,

i've three different files: main.m makeOperator.m makeOperator_A.cu

In main.m:

global DICTIONARY

load('data.mat');

A = makeOperator();

x = rand( size(A,2), 1, 'double' );

R = A*x;

In makeOperator.m:

classdef makeOperator

properties

methods

..

function v = mtimes( obj, x )

global DICTIONARY

..

v = makeOperator_A( DICTIONARY);

end

..

end

In makeOperator_A.cu:

void mexFunction(int nlhs, mxArray *plhs[],int nrhs, const mxArray *prhs[]) {

mxArray* tmp;

..

tmp = mxGetField(prhs[0],0,"nV");

nV = mxGetScalar(tmp);

..

}

Whit mxGetScalar(tmp) i obtain nV=0 instead of nV=72 that is the true value of nV saved in DICTIONARY.nV

Why?

Thanks,

Davide

[James Tursa]

Where is DICTIONARY coming from? The mat file? I don't see anything in your posted code that sets DICTIONAR.nV = 72.

[davide]

DICTIONARY is in data.mat. DICTIONARY is a struct and nV is a field of a struct