realizar 0.8.5

Pure Rust ML inference engine built from scratch - model serving for GGUF and safetensors
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263


#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_mock_backend_is_always_available() {
        assert!(MockBackend::is_available());
    }

    #[test]
    fn test_mock_backend_creation() {
        let backend = MockBackend::new(0).expect("Mock backend should always succeed");
        assert_eq!(backend.device_name(), "MockGPU (CPU fallback)");
        assert_eq!(backend.cached_weight_count(), 0);
    }

    #[test]
    fn test_load_weights() {
        let mut backend = MockBackend::new_mock();
        let weights = vec![1.0, 2.0, 3.0, 4.0];

        let handle = backend.load_weights("test", &weights).expect("handle");

        assert_eq!(handle, 4);
        assert!(backend.has_weights("test"));
        assert!(!backend.has_weights("nonexistent"));
        assert_eq!(backend.cached_weight_count(), 1);
        assert_eq!(backend.get_weights("test"), Some(&weights));
    }

    #[test]
    fn test_load_quantized_weights() {
        let mut backend = MockBackend::new_mock();
        let data = vec![0u8, 1, 2, 3, 4, 5, 6, 7];

        let handle = backend.load_quantized_weights("q4_test", &data, 2).expect("handle");

        assert_eq!(handle, 8);
        assert!(backend.has_weights("q4_test"));
        assert_eq!(backend.get_quantized_weights("q4_test"), Some(&data));
        assert_eq!(backend.get_quant_type("q4_test"), Some(2));
    }

    #[test]
    fn test_clear_weights() {
        let mut backend = MockBackend::new_mock();
        backend.load_weights("test", &[1.0, 2.0]).expect("load_weights");
        backend
            .load_quantized_weights("q_test", &[0u8; 18], 2)
            .expect("expected value");

        assert_eq!(backend.cached_weight_count(), 2);

        backend.clear_weights();

        assert_eq!(backend.cached_weight_count(), 0);
        assert!(!backend.has_weights("test"));
        assert!(!backend.has_weights("q_test"));
    }

    #[test]
    fn test_matmul_identity() {
        let mut backend = MockBackend::new_mock();

        // 2x2 identity @ 2x2 matrix = same matrix
        let identity = vec![1.0, 0.0, 0.0, 1.0];
        let matrix = vec![1.0, 2.0, 3.0, 4.0];

        let result = backend.matmul(&identity, &matrix, 2, 2, 2).expect("result");

        assert_eq!(result, matrix);
    }

    #[test]
    fn test_matmul_simple() {
        let mut backend = MockBackend::new_mock();

        // [1, 2] @ [[1], [2]] = [5]
        let a = vec![1.0, 2.0];
        let b = vec![1.0, 2.0];

        let result = backend.matmul(&a, &b, 1, 2, 1).expect("result");

        assert_eq!(result.len(), 1);
        assert!((result[0] - 5.0).abs() < 1e-6);
    }

    #[test]
    fn test_matmul_2x3_3x2() {
        let mut backend = MockBackend::new_mock();

        // A = [[1, 2, 3], [4, 5, 6]] (2x3)
        // B = [[7, 8], [9, 10], [11, 12]] (3x2)
        // C = A @ B = [[58, 64], [139, 154]] (2x2)
        let a = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0];
        let b = vec![7.0, 8.0, 9.0, 10.0, 11.0, 12.0];

        let result = backend.matmul(&a, &b, 2, 3, 2).expect("result");

        assert_eq!(result.len(), 4);
        assert!((result[0] - 58.0).abs() < 1e-5);
        assert!((result[1] - 64.0).abs() < 1e-5);
        assert!((result[2] - 139.0).abs() < 1e-5);
        assert!((result[3] - 154.0).abs() < 1e-5);
    }

    #[test]
    fn test_matmul_3x3_identity() {
        let mut backend = MockBackend::new_mock();

        // A = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
        // B = identity
        // A @ B = A
        let a = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0];
        let identity = vec![1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0];

        let result = backend.matmul(&a, &identity, 3, 3, 3).expect("result");

        for (i, (&expected, &actual)) in a.iter().zip(result.iter()).enumerate() {
            assert!(
                (expected - actual).abs() < 1e-6,
                "Mismatch at index {}: expected {}, got {}",
                i,
                expected,
                actual
            );
        }
    }

    #[test]
    fn test_matmul_dimension_validation_a() {
        let mut backend = MockBackend::new_mock();

        let a = vec![1.0, 2.0]; // 2 elements
        let b = vec![1.0, 2.0, 3.0, 4.0]; // 4 elements

        // This should fail: m=2, k=2 means a should have 4 elements
        let result = backend.matmul(&a, &b, 2, 2, 2);
        assert!(result.is_err());
    }

    #[test]
    fn test_matmul_dimension_validation_b() {
        let mut backend = MockBackend::new_mock();

        let a = vec![1.0, 2.0, 3.0, 4.0]; // 4 elements (2x2)
        let b = vec![1.0, 2.0]; // 2 elements

        // This should fail: k=2, n=2 means b should have 4 elements
        let result = backend.matmul(&a, &b, 2, 2, 2);
        assert!(result.is_err());
    }

    #[test]
    fn test_matmul_cached() {
        let mut backend = MockBackend::new_mock();

        // Weight: 3x2 matrix stored as [k=3, n=2]
        // [[1, 2], [3, 4], [5, 6]]
        let weight = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0];
        backend.load_weights("w", &weight).expect("load_weights");

        // Input: 1x3 vector (m=1, k=3)
        let x = vec![1.0, 1.0, 1.0];

        // y = x @ W = [1*1+1*3+1*5, 1*2+1*4+1*6] = [9, 12]
        let result = backend.matmul_cached("w", &x, 1, 3, 2).expect("result");

        assert_eq!(result.len(), 2);
        assert!((result[0] - 9.0).abs() < 1e-6);
        assert!((result[1] - 12.0).abs() < 1e-6);
    }

    #[test]
    fn test_matmul_cached_weight_not_found() {
        let mut backend = MockBackend::new_mock();

        let x = vec![1.0, 2.0, 3.0];
        let result = backend.matmul_cached("nonexistent", &x, 1, 3, 2);

        assert!(result.is_err());
    }

    #[test]
    fn test_q4k_gemv_cached() {
        let mut backend = MockBackend::new_mock();

        // Load quantized weight
        let q_data = vec![0u8; 256]; // Dummy quantized data
        backend
            .load_quantized_weights("q_weight", &q_data, 3)
            .expect("expected value"); // 3 = Q4_K

        let input = vec![1.0f32; 768];
        let result = backend
            .q4k_gemv_cached("q_weight", &input, 3072, 768)
            .expect("expected value");

        assert_eq!(result.len(), 3072);
        // Result should be finite (no NaN/Inf)
        assert!(result.iter().all(|x| x.is_finite()));
    }

    #[test]
    fn test_q4k_gemv_cached_not_found() {
        let mut backend = MockBackend::new_mock();

        let input = vec![1.0f32; 768];
        let result = backend.q4k_gemv_cached("nonexistent", &input, 3072, 768);

        assert!(result.is_err());
    }

    #[test]
    fn test_synchronize() {
        let backend = MockBackend::new_mock();

        // Should always succeed for mock backend
        backend.synchronize().expect("synchronize");
    }

    #[test]
    fn test_debug_impl() {
        let mut backend = MockBackend::new_mock();
        backend.load_weights("test", &[1.0, 2.0]).expect("load_weights");

        let debug_str = format!("{:?}", backend);

        assert!(debug_str.contains("MockBackend"));
        assert!(debug_str.contains("MockGPU"));
        assert!(debug_str.contains("num_weights"));
    }

    #[test]
    fn test_multiple_weights() {
        let mut backend = MockBackend::new_mock();

        backend.load_weights("w1", &[1.0, 2.0]).expect("load_weights");
        backend.load_weights("w2", &[3.0, 4.0]).expect("load_weights");
        backend.load_quantized_weights("q1", &[0u8; 18], 2).expect("load_quantized_weights");

        assert_eq!(backend.cached_weight_count(), 3);
        assert!(backend.has_weights("w1"));
        assert!(backend.has_weights("w2"));
        assert!(backend.has_weights("q1"));
    }

    #[test]
    fn test_overwrite_weight() {
        let mut backend = MockBackend::new_mock();

        backend.load_weights("test", &[1.0, 2.0]).expect("load_weights");
        assert_eq!(backend.get_weights("test"), Some(&vec![1.0, 2.0]));

        // Overwrite with different values
        backend.load_weights("test", &[3.0, 4.0, 5.0]).expect("load_weights");
        assert_eq!(backend.get_weights("test"), Some(&vec![3.0, 4.0, 5.0]));

        // Count should still be 1 (not 2)
        assert_eq!(backend.weights.len(), 1);
    }
}