03_ndarray_identity/
03_ndarray_identity.rs

1use apple_metal::MetalDevice;
2use apple_mps::{data_type, NDArray, NDArrayDescriptor, NDArrayIdentity};
3
4fn main() {
5    let device = MetalDevice::system_default().expect("no Metal device available");
6    let queue = device.new_command_queue().expect("command queue");
7
8    let descriptor =
9        NDArrayDescriptor::with_dimension_sizes(data_type::FLOAT32, &[4]).expect("descriptor");
10    assert_eq!(descriptor.number_of_dimensions(), 1);
11    assert_eq!(descriptor.length_of_dimension(0), 4);
12
13    descriptor.reshape_with_dimension_sizes(&[2, 2]);
14    assert_eq!(descriptor.number_of_dimensions(), 2);
15    assert_eq!(descriptor.length_of_dimension(0), 2);
16    assert_eq!(descriptor.length_of_dimension(1), 2);
17
18    let array_descriptor = NDArrayDescriptor::with_dimension_sizes(data_type::FLOAT32, &[2, 2])
19        .expect("array descriptor");
20    let array = NDArray::new(&device, &array_descriptor).expect("ndarray");
21    assert_eq!(array.number_of_dimensions(), 2);
22    assert_eq!(array.length_of_dimension(0), 2);
23    assert!(array.resource_size() > 0);
24
25    if let Some(identity) = NDArrayIdentity::new(&device) {
26        let destination_descriptor =
27            NDArrayDescriptor::with_dimension_sizes(data_type::FLOAT32, &[4])
28                .expect("destination descriptor");
29        let destination =
30            NDArray::new(&device, &destination_descriptor).expect("destination ndarray");
31        let command_buffer = queue.new_command_buffer().expect("command buffer");
32        assert!(identity.reshape_into(Some(&command_buffer), &array, &[4], &destination));
33        command_buffer.commit();
34        command_buffer.wait_until_completed();
35        assert_eq!(destination.number_of_dimensions(), 1);
36        assert_eq!(destination.length_of_dimension(0), 4);
37        println!(
38            "ndarray smoke passed: resource_size={} dims={}x{}",
39            array.resource_size(),
40            array.length_of_dimension(0),
41            array.length_of_dimension(1)
42        );
43    } else {
44        println!("ndarray smoke skipped: MPSNDArrayIdentity unavailable on this macOS version");
45    }
46}
03_ndarray_identity/03_ndarray_identity.rs

03_ndarray_identity/
03_ndarray_identity.rs
