I want to compile .cu code on my matlab 2015a using 'mexcuda' but i am getting errors as shown

 mexcuda -v -largeArrayDims mexGPUExample.cu
 Undefined function or variable 'mexcuda'.

and

 mex -v -largeArrayDims mexGPUExample.cu
 Verbose mode is on.
 No MEX options file identified; looking for an implicit selection.
 Error using mex
 No supported compiler or SDK was found. For options, visit 
 http://www.mathworks.com/support/compilers/R2015a/win64.html

i have parallel tool kit and compilers installed on my system .

[Walter Roberson]

What do you get if you use

mex -setup

It appears as if you do not have a supported compiler installed in your system.

Which operating system version are you using?

[nikhil mhala]

MEX configured to use 'Microsoft Windows SDK 7.1 (C)' for C language compilation.
Warning: The MATLAB C and Fortran API has changed to support MATLAB
   variables with more than 2^32-1 elements. In the near future
   you will be required to update your code to utilize the
   new API. You can find more information about this at:
   http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html.

To choose a different language, select one from the following:
 mex -setup C++ 
 mex -setup FORTRAN

Answer 1

[Edric Ellis]

The function mexcuda was introduced in R2015b. You'll need to follow the instructions in the R2015a documentation: http://www.mathworks.com/help/releases/R2015a/distcomp/run-mex-functions-containing-cuda-code.html#btrgjh3-1