mirror of
https://github.com/ml-explore/mlx.git
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c4230747a1
* redesign for faster cpu/gpu synch * load + more async CPU * use command encoder API and move more ops to use it * make fence back-end generic + CPU only fence * faster build * fix async eval * fixes + handle temporaries * fix / improve cpu conv * remove unused status, fix siblings * fix extensions * fix * fix no cpu build * format * comments * fix perf regression, remove unecessary abort * fix events, task limit cpu * fix waiting * fix donation / temporaries in normalization
48 lines
1.7 KiB
Metal
48 lines
1.7 KiB
Metal
// Copyright © 2023-2025 Apple Inc.
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#include <metal_stdlib>
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#include "mlx/backend/metal/kernels/utils.h"
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template <typename T>
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[[kernel]] void axpby_general(
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device const T* x [[buffer(0)]],
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device const T* y [[buffer(1)]],
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device T* out [[buffer(2)]],
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constant const float& alpha [[buffer(3)]],
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constant const float& beta [[buffer(4)]],
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constant const int* shape [[buffer(5)]],
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constant const int64_t* x_strides [[buffer(6)]],
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constant const int64_t* y_strides [[buffer(7)]],
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constant const int& ndim [[buffer(8)]],
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uint index [[thread_position_in_grid]]) {
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auto x_offset = elem_to_loc(index, shape, x_strides, ndim);
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auto y_offset = elem_to_loc(index, shape, y_strides, ndim);
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out[index] =
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static_cast<T>(alpha) * x[x_offset] + static_cast<T>(beta) * y[y_offset];
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}
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template <typename T>
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[[kernel]] void axpby_contiguous(
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device const T* x [[buffer(0)]],
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device const T* y [[buffer(1)]],
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device T* out [[buffer(2)]],
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constant const float& alpha [[buffer(3)]],
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constant const float& beta [[buffer(4)]],
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uint index [[thread_position_in_grid]]) {
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out[index] =
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static_cast<T>(alpha) * x[index] + static_cast<T>(beta) * y[index];
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}
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// clang-format off
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#define instantiate_axpby(type_name, type) \
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instantiate_kernel("axpby_general_" #type_name, axpby_general, type) \
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instantiate_kernel( \
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"axpby_contiguous_" #type_name, axpby_contiguous, type)
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instantiate_axpby(float32, float);
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instantiate_axpby(float16, half);
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instantiate_axpby(bfloat16, bfloat16_t);
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instantiate_axpby(complex64, complex64_t);
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// clang-format on
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