8ee0c4bc4e
CGo wrapper for mlx-c providing zero-Python Metal GPU inference. Includes Gemma 3 model architecture, BPE tokenizer, KV cache, composable sampling, and OpenAI-compatible serve command. Build-tagged (darwin && arm64 && mlx) with stubs for cross-platform. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
//go:build darwin && arm64 && mlx
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package mlx
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/*
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#include "mlx/c/mlx.h"
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*/
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import "C"
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// RandomCategorical samples from a categorical distribution defined by logprobs.
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// Returns indices sampled according to the log-probability distribution along the last axis.
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func RandomCategorical(logprobs *Array) *Array {
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out := New("RANDOM_CATEGORICAL", logprobs)
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// shape for output: same as input but last dim removed
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C.mlx_random_categorical_shape(
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&out.ctx,
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logprobs.ctx,
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C.int(-1), // axis
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nil, C.int(0), // empty shape = infer from input
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nil, // key (use default)
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DefaultStream().ctx,
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)
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return out
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}
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// RandomUniform generates uniform random values in [low, high).
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func RandomUniform(low, high float32, shape []int32, dtype DType) *Array {
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out := New("RANDOM_UNIFORM")
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cShape := make([]C.int, len(shape))
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for i, s := range shape {
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cShape[i] = C.int(s)
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}
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lo := FromValue(low)
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hi := FromValue(high)
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C.mlx_random_uniform(
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&out.ctx,
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lo.ctx, hi.ctx,
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&cShape[0], C.int(len(cShape)),
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C.mlx_dtype(dtype),
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nil, // key
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DefaultStream().ctx,
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)
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return out
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}
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