Hi Jan, Thank you for your help. Am I having a similar problem with this program? The operation is preformed correctly on the first row, but the second row is incorrect.
Thanks again, Joe On Thu, Nov 15, 2012 at 6:21 AM, Jan Meinke <[email protected]> wrote: > Dear Joe, > > On Wed, Nov 14, 2012 at 6:59 PM, Joseph Kopacz <[email protected]> wrote: > > > > Hi Everyone, > > > > I am new to this style of mailing list so if I miss anything please let > me know. > > > > I am trying to create a opencl program that will calculate the sum of > the prime numbers below a given integer. I have gotten the code to > function on my computer, ie it no longer crashes the driver when it runs; > however, it does not return the correct result. > > > > The code I have attached preforms the process in a serial fashion then > tries to utilize pyopencl to do this in a parallel manner. > > > > > There are a number of issues with your example. > > You define your variables a and c as pointers to long int, but the > buffers you pass are filled with 32 bit integers. In this case, > there's no cast to the larger type but the bis are reinterpreted: the > representation of the first 64 bits following the pointer address is > interpreted as a 64 bit integer. > > In your kernel function you make the assumption that temp2 is > initialized to zero but this is not necessarily true. > > You can get rid of the loop. OpenCL takes care of it. > > The attached code works for me. > > Hope that helps, > > Jan >
matrix_operations.py
Description: Binary data
_______________________________________________ PyOpenCL mailing list [email protected] http://lists.tiker.net/listinfo/pyopencl
