PC Lab 6

Session 6

Task: run matrix-column normalization using OpenCL (https://www.khronos.org/opencl)

Matrix-column normalization means that, at the end of the process, every sum of squared elements on the same column is 1.

Example: Assuming matrix is

[ 1, 2 ] 
[ 3, 4 ]

the result of normalization is :

[ 0.3162     0.4472 ]
[ 0.9487     0.8944 ]

That is: 0.3162 * 0.3162 + 0.9487 * 0.9487 = 1 and of course, 0.3162 / 0.9487 is kept as 1 / 3 ratio That is: 0.4472 * 0.4472 + 0.8944 * 0.8944 = 1 and of course, 0.4472 / 0.8944 is kept as 2 / 4 ratio

1. Install opencl drivers for your platform
2. Check what opencl-capable devices with command clinfo
3. Run the VectorAddOpenCL app [[1]] to see that all works ok
4. Implement the normalization operation across 1 OpenCL thread of a single device
5. Implement the normalization operation across multiple OpenCL threads of the same device

Points (out of 10) vs. expected performance:

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