[backend-metal]

Parameterises the Metal backend with

1. gimmik-max-nnz — cutoff for GiMMiK in terms of the number of non-zero entires in a constant matrix, defaults to 2048:

   int

2. gimmik-nkerns — number of kernel algorithms to try when benchmarking, defaults to 18:

   int

3. gimmik-nbench — number of benchmarking runs for each kernel, defaults to 40:

   int

Example:

[backend-metal]
gimmik-max-nnz = 512