PGI User Forum

[ink]

hello,
i'm playing with the matrix multiplication example given in CUDA Fortran Programming Guide & Ref, p. 43-44 and i can't get the data back from the device. what methods are currently supported?

btw, i had to add "device" to line 8 (p.43)
real, device :: A(N,M), B(M,L), C(N,L)
to compile the example. Unfortunately when run it it breaks with
copyout Memcpy FAILED:4
i tried using cudaMemcpy2D to do explicit data transfer but still get errors (stat > 0)

thanks

[mkcolg]

Hi ink,

Looks like our docs people missed some updates. Try using the matrix multiply example found the "etc/samples" instead.

Thanks,
Mat

[TheMatt]

[MRA]

Hi TheMatt,

You are probably using a 64bit OS. You need to point the CUDALIB variable (located inside the sitenvrc) to the lib64 path of CUDA. In your case, it's should be /opt/cuda/lib64.

Mathieu

[TheMatt]