openCL CL_OUT_OF_RESOURCES issue

Hi,

I'm Trying to convert a code written in Cuda to openCL and run into some trouble. My final goal is to implement the code on an Odroid XU3 board with a Mali T628 GPU.

In order to simplify the transition and save time trying to debug openCL kernels I've taken the following steps:

1. Implement the code in Cuda and test it on a Nvidia GeForce 760
2. Implement the code in openCL and test it on a Nvidia GeForce 760
3. test the openCL code on an Odroid XU3 board with a Mali T628 GPU.

I know that different architectures may have different optimizations but that isn't my main concern for now. I manged to run the openCL code on my Nvidia GPU with no apparent issues but keep getting strange errors when trying to run the code on the Odroid board. I know that different architectures have different handling of exceptions etc. but I'm not sure how to solve those issues.

Since the openCL code works great on my Nvidia I assume that I managed to do the correct transition between thread/blocks -> workItems/workGroups etc. I already fixed several issues that relate to the cl_device_max_work_group_size issue so that can't be the cause.When running the code i'm getting a "CL_OUT_OF_RESOURCES" error.

I've narrowed the cause of the error to 2 lines in the code but not sure to fix those issues.

the error is caused by the following lines in the kernel code attached :

1. lowestDist[pixelNum] = partialDiffSumTemp; both variables are private variables of the kernel and therefor I don't see any potential issue.
2. d_disparityLeft[globalMemIdx + TILE_BOUNDARY_WIDTH - WINDOW_RADIUS + 0] = bestDisparity[0]; Here I guess the cause is "OUT_OF_BOUND" but not sure how to debug it since the original code doesn't have any issue.

Is there any tool that can help debugging those issues on the Odroid ? I saw that using "printf" inside the kernel isn't possible. Is there another available command ?

Thanks

Yuval