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10e51c5177
* prefer rocm v6 on windows Avoid building with v7 - more changes are needed * MLX: add header vendoring and remove go build tag This switches to using a vendoring approach for the mlx-c headers so that Go can build without requiring a cmake first. This enables building the new MLX based code by default. Every time cmake runs, the headers are refreshed, so we can easily keep them in sync when we bump mlx versions. Basic Windows and Linux support are verified. * ci: harden for flaky choco repo servers CI sometimes fails due to choco not actually installing cache. Since it just speeds up the build, we can proceed without. * review comments
85 lines
1.9 KiB
Go
85 lines
1.9 KiB
Go
package mlx
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// #include "generated.h"
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import "C"
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import (
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"cmp"
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"unsafe"
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)
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type slice struct {
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args []int
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}
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func Slice(args ...int) slice {
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return slice{args: args}
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}
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func makeSlices(dims []int, slices ...slice) (starts, stops, strides []C.int) {
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if len(slices) != len(dims) {
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panic("number of slice arguments must match number of tensor dimensions")
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}
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args := [3][]C.int{
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make([]C.int, len(slices)),
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make([]C.int, len(slices)),
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make([]C.int, len(slices)),
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}
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for i, s := range slices {
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switch len(s.args) {
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case 0:
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// slice[:]
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args[0][i] = C.int(0)
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args[1][i] = C.int(dims[i])
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args[2][i] = C.int(1)
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case 1:
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// slice[i]
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args[0][i] = C.int(s.args[0])
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args[1][i] = C.int(s.args[0] + 1)
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args[2][i] = C.int(1)
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case 2:
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// slice[i:j]
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args[0][i] = C.int(s.args[0])
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args[1][i] = cmp.Or(C.int(s.args[1]), C.int(dims[i]))
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args[2][i] = C.int(1)
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case 3:
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// slice[i:j:k]
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args[0][i] = C.int(s.args[0])
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args[1][i] = cmp.Or(C.int(s.args[1]), C.int(dims[i]))
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args[2][i] = C.int(s.args[2])
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default:
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panic("invalid slice arguments")
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}
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}
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return args[0], args[1], args[2]
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}
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func (t *Array) Slice(slices ...slice) *Array {
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starts, stops, strides := makeSlices(t.Dims(), slices...)
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out := New("SLICE")
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C.mlx_slice(
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&out.ctx, t.ctx,
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unsafe.SliceData(starts), C.size_t(len(starts)),
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unsafe.SliceData(stops), C.size_t(len(stops)),
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unsafe.SliceData(strides), C.size_t(len(strides)),
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DefaultStream().ctx,
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)
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return out
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}
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func (t *Array) SliceUpdate(other *Array, slices ...slice) *Array {
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starts, stops, strides := makeSlices(t.Dims(), slices...)
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out := New("SLICE_UPDATE")
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C.mlx_slice_update(
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&out.ctx, t.ctx, other.ctx,
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unsafe.SliceData(starts), C.size_t(len(starts)),
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unsafe.SliceData(stops), C.size_t(len(stops)),
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unsafe.SliceData(strides), C.size_t(len(strides)),
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DefaultStream().ctx,
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)
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return out
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}
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