Passing #defines in as build options

[ABoxe]

I would like to pass some compile time constants in as build options:

eg:  "-D BUFFER_SIZE=512"

and then I would like to declare the following variable in my kernel:

local buffer[BUFFER_SIZE]; 

When I try this, (visual studio 2012) I get errors. Is there a way of doing this with the intel SDK and 

visual studio integration?

Thanks!

[Yuri_K_Intel]

Hi Aaron, Could you please rephrase your question? What exactly are you trying to do and what errors do you get? My understanding is that you should just pass "-D BUFFER_SIZE=512" as a compiler option to clBuildProgram (or clCompileProgram) and this macro will be defined in your kernel so you can use it. And I don't see any relation to Visual Studio. Thanks, Yuri

[ABoxe]

THanks, Yuri. Visual Studio does static checking on opencl file

when compiling C/C++ code. And it doesn't know about the compiler option passed to clBuildProgram.

So it flags

local buffer[BUFFER_SIZE]; 

as an error.

I would like the visual studio plugin to somehow know about the clBuildProgram complier options.

Is this clearer?

THanks,

Aaron

[Yuri_K_Intel]

Yes, thanks. You should be able to set the necessary build options in 'Project properies'->'Intel SDK for OpenCL Applications'->'General'->'additional build options': -D BUFFER_SIZE=512 Please, let me know if that works for you. Thanks, Yuri

[ABoxe]

Thanks, Yuri. Unfortunately, that will not work.

I would like to build different programs using the same kernel code, but with different configurations of #defines.

For example:

Program 1:  kernel1  with  BUFFER_SIZE=512

Program2: kernel1 with BUFFER_SIZE=1028

Also, when I tried your suggestion, I got CL_INVALID_KERNEL errors.  So, it doesn't actually work :(

Thanks again,

Aaron

[ABoxe]

Any ideas on how to resolve this?  Any workarounds?

Thanks,

Aaron

[Jeffrey_M_Intel1]

You could consider your kernel source as a string and build it from values defined in the host program.

That is,  

char *kernelSource2 ="
...
local buffer[%d]; \n
...";

sprintf(kernelSource,kernelSource2,BUFFER_SIZE);

program = clCreateProgramWithSource(context, 1,
                            (const char **) & kernelSource, NULL, &err); 

Will this work for what you are trying to do?

[ABoxe]

Ok, ok, my bad here. Yuri's suggestion does work.

1) Right click on .cl file and add a command line parameter D BUFFER_SIZE=512

2) pass the same parameter in when calling clBuildProgram

Now, the compiler is happy, and the visual studio plugin is happy.