ComputeLibrary | Compute Library is a set of computer vision | Machine Learning library

I am working with integrating ARM ComputeLibrary into a project.

It's not an API whose semantics I am familiar with, but I'm working my way through the docs and examples.

At the moment, I am trying to copy the contents of an std::vector to a CLTensor. Then use the ARMCL GEMM operation.

I've been building an MWE, shown below, with the aim of getting matrix multiplication working.

To get the input data from a standard C++ std::vector, or std::ifstream, I am trying an iterator based approach, based on this example shown in the docs.

However, I keep getting a segfault.

There is an example of sgemm using CLTensor in the source, which is also where I'm drawing inspiration from. However it gets its input data from Numpy arrays, so isn't relevant up to this point.

I'm not sure in ARMCL if CLTensor and Tensor have disjoint methods. But I feel like they are of a common interface ITensor. Still, I haven't been able to find an equivalent example that uses CLTensor instead of Tensor for this iterator based method.

You can see my code I'm working with below, which fails on line 64 (*reinterpret_cast..). I'm not entirely sure what the operations are that it performs, but my guess is that we have our ARMCL iterator input_it which is incremented n * m times, each iteration setting the value of the CLTensor at that address to the corresponding input value. reinterpret_cast is just to make the types play nicely together?

I reckon my Iterator and Window objects are okay, but can't be sure.

I am working with the arm compute library link to convert an opencv application to a more efficient code base.

I would like to import data from an opencv mat, which I've done successfully by doing this.