I finally tried cuda in fasm and it does work.
This simple test program shows how accurate the approximate log2 function is on the gpu vs cpu.

Note: The program posted 8 posts down seems to work better.

If you have a cuda-enabled gpu and this doesn't display a table of values, please let me know what error you are experiencing.

error code dec:999

Does a GTX580 support CUDA? I assume so.

edit: fails at cleanup 'cuMemFree'

Works fine for me: GT540M

sinsi,
It seems strange that everything would work except the cleanup.
Error code 999 is CUDA_UNKNOWN_ERROR as in cuda.inc.
Try taking out jnz Error and see if the table was computed correctly.
Also, I hate to ask, but what driver #?
The GTX580 does support cuda - this is what I tested it on.

Driver is 280.26, first column is 1 to 20, second is all 0, 3rd is 0 to 4.321
OS is win7pro x64, CPU is AMD Phenom II X6 1100T.

Works fine here on my GTX260. Great stuff ! So as far as I understood this is NVIDIA-CUDA-syntax. So I guess AMD uses a different syntax.

Wasn't there something like a common shader language, like GLSL. Couldn't that be used for the same effort to avoid the need of writing code for both companies ?

DirectCompute

@sinsi
The only relavent different in our systems is the driver #. I have 275.33, and have had problems with the newer ones in the past. You can see exactly how it is failing with this

OK, the last one works fine.

What?
OK. This is further proof that cuParmSeti sucks and cuParmSetv is the way to go - that is the only thing I changed.

Sorry for reviving a (slightly) old thread.. but I got a Nvidia GTS 450 not long ago - and was keen to test out CUDA. However - I use linux as my primary (and only) system, so I decided to port your code to 64-bit linux to see if it would work (I hope you dont mind.. if you do, let me know, and I'll take it down )

I've attached the code, the cuda.inc hasnt changed, the api_cuda.inc's been changed to match ELF64 "extrn" syntax rather than the import thing that winapi does, and the main cudatest.asm's been totally updated to work on linux 64-bit.
The api_cuda actually changed more than that, i dumped a list of the function names from the cuda library and generated the inc by extrn'ing all the available functions. Theres less functions in the linux cuda library than in the windows (ie: no Direct3D stuff, obviously)

Uploaded the archive as a .tar.bz2, should extract fine with tar -xvf cuda.tar.bz2, or using a gui archive program (if you insist on using the GUI ). inside's the code, etc, and a makefile. Typing make should build it fine. The second stage may vary depending on the system, although I'm pretty sure the location/name of the dynamic linker is quite standard, if yours is different from mine (/lib/ld-linux-x86-64.so.2), then you can change it in the makefile..

Thanks a lot tthsqe for the original code, you've saved me from using C/C++ and nvidia's big SDK/compiler.. now I can have fun writing some CUDA code in assembly (under linux, of course) - Speaking of which, where did you get the syntax for the assembler used in your PTX function, the one that is actually assembled/run on the GPU? I looked up some of the CUDA documentation on the nvidia site, but it was mainly references on the functions in the cuda library, rather than the CUDA language itself.

OpenCL does that.

Maybe from PTX: Parallel Thread Execution ISA? But if I remember right, this is not the one that is run on the GPU, is some sort of "Java assembly" (but still, this may be faster than using HLL code, at least in the DirectX world, drivers receive assembled code, not the HLL code for them to compile).

Ah, thanks for the link Loco, I know the "assembly" code is probably not the code thats actually executed on the card - but well, its as close as we'll get probably

Fantastic!
I have this working on a geforce 9400 gt
One thing I wondered, as I increase the memory arrays up passed 10Mbytes, this appears in the .exe filesize...putting the data last does not seem to work as it does in 32-bit fasm. Does anyone know how I can make the .exe file much smaller?

Ah- found the answer, you must put assigned data before unassigned data at the end. 5K exe file now.