llama-cpp-sys-4 0.2.46

Low Level Bindings to llama.cpp
Documentation 
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


float rope_yarn_ramp(const float low, const float high, const uint i0) {
    const float y = (i0 / 2 - low) / max(0.001f, high - low);
    return 1.0f - min(1.0f, max(0.0f, y));
}

uint rope_a_coord(const uint i0, const uint i01, const uint i02, const uint i03, rope_params p) {
#if RMS_NORM_ROPE_FUSION
    // Per-row offset in shared memory
    const uint ix = i0;
#else
    const uint ix = i03*p.nb03 + i02*p.nb02 + i01*p.nb01 + i0;
#endif
    return ix;
}

void rope_yarn(const float theta_extrap, const uint i0, out float cos_theta, out float sin_theta, rope_params p) {
    float mscale = p.attn_factor;
    // Get n-d rotational scaling corrected for extrapolation
    float theta_interp = p.freq_scale * theta_extrap;
    float theta = theta_interp;
    if (p.ext_factor != 0.0f) {
        float ramp_mix = rope_yarn_ramp(p.corr_dims[0], p.corr_dims[1], i0) * p.ext_factor;
        theta = theta_interp * (1 - ramp_mix) + theta_extrap * ramp_mix;

        // Get n-d magnitude scaling corrected for interpolation
        mscale *= 1.0f + 0.1f * log(1.0f / p.freq_scale);
    }
    // Backprogagation uses inverted rotation
    if (p.is_back != 0) {
        theta = -theta;
    }
    cos_theta = cos(theta) * mscale;
    sin_theta = sin(theta) * mscale;
}

void rope_norm(const uint i0, const uint i1, const uint i2, const uint i3, rope_params p) {
    if (i0 >= p.ne00) {
        return;
    }

    uint idst = i0 + i1 * p.nb11 + i2 * p.nb12 + i3 * p.nb13;
    const uint ix = rope_a_coord(i0, i1, i2, i3, p);

    // Fusion optimization: ROPE + VIEW + SET_ROWS.
    // The rope output is viewed as a 1D tensor and offset based on a row index in rope_data_i.
    if (p.set_rows_stride != 0) {
        idst = i1*p.nb11 + i0;
        idst += rope_data_i[i2].x * p.set_rows_stride;
    }

    if (i0 >= p.n_dims) {
        rope_data_d[idst + 0] = ROPE_D_TYPE(rope_data_a[ix + 0]);
        rope_data_d[idst + 1] = ROPE_D_TYPE(rope_data_a[ix + 1]);

        return;
    }

    const float theta_base = rope_data_pos[i2] * pow(p.theta_scale, i0/2.0f);

    const float freq_factor = p.has_ff != 0 ? rope_data_ff[i0/2] : 1.0f;

    float cos_theta, sin_theta;
    rope_yarn(theta_base / freq_factor, i0, cos_theta, sin_theta, p);

    const float x0 = float(rope_data_a[ix + 0]);
    const float x1 = float(rope_data_a[ix + 1]);

    rope_data_d[idst + 0] = ROPE_D_TYPE(x0*cos_theta - x1*sin_theta);
    rope_data_d[idst + 1] = ROPE_D_TYPE(x0*sin_theta + x1*cos_theta);
}

void rope_neox(const uint i0, const uint i1, const uint i2, const uint i3, rope_params p) {
    if (i0 >= p.ne00) {
        return;
    }

    uint idst = i0/2 + i1 * p.nb11 + i2 * p.nb12 + i3 * p.nb13;
    const uint ix = rope_a_coord(i0/2, i1, i2, i3, p);

    // Fusion optimization: ROPE + VIEW + SET_ROWS.
    // The rope output is viewed as a 1D tensor and offset based on a row index in rope_data_i.
    if (p.set_rows_stride != 0) {
        idst = i1*p.nb11 + i0/2;
        idst += rope_data_i[i2].x * p.set_rows_stride;
    }

    if (i0 >= p.n_dims) {
        rope_data_d[idst + i0/2 + 0] = ROPE_D_TYPE(rope_data_a[ix + i0/2 + 0]);
        rope_data_d[idst + i0/2 + 1] = ROPE_D_TYPE(rope_data_a[ix + i0/2 + 1]);

        return;
    }

    const float theta_base = rope_data_pos[i2] * pow(p.theta_scale, i0/2.0f);

    const float freq_factor = p.has_ff != 0 ? rope_data_ff[i0/2] : 1.0f;

    float cos_theta, sin_theta;
    rope_yarn(theta_base / freq_factor, i0, cos_theta, sin_theta, p);

    const float x0 = float(rope_data_a[ix + 0]);
    const float x1 = float(rope_data_a[ix + p.n_dims/2]);

    rope_data_d[idst + 0]          = ROPE_D_TYPE(x0*cos_theta - x1*sin_theta);
    rope_data_d[idst + p.n_dims/2] = ROPE_D_TYPE(x0*sin_theta + x1*cos_theta);
}


void rope_multi(const uint i0, const uint i1, const uint i2, const uint i3, rope_params p) {
    if (i0 >= p.ne00) {
        return;
    }

    uint idst = i0/2 + i1 * p.nb11 + i2 * p.nb12 + i3 * p.nb13;
    const uint ix = rope_a_coord(i0/2, i1, i2, i3, p);

    // Fusion optimization: ROPE + VIEW + SET_ROWS.
    // The rope output is viewed as a 1D tensor and offset based on a row index in rope_data_i.
    if (p.set_rows_stride != 0) {
        idst = i1*p.nb11 + i0/2;
        idst += rope_data_i[i2].x * p.set_rows_stride;
    }

    if (i0 >= p.n_dims) {
        rope_data_d[idst + i0/2 + 0] = ROPE_D_TYPE(rope_data_a[ix + i0/2 + 0]);
        rope_data_d[idst + i0/2 + 1] = ROPE_D_TYPE(rope_data_a[ix + i0/2 + 1]);

        return;
    }

    const int sect_dims = p.sections[0] + p.sections[1] + p.sections[2] + p.sections[3];
    const int sec_w = p.sections[1] + p.sections[0];
    const uint sector = (i0 / 2) % sect_dims;

    float theta_base = 0.0;
    if (p.is_imrope != 0) {
        if (sector % 3 == 1 && sector < 3 * p.sections[1]) {
            theta_base = rope_data_pos[i2 + p.ne02 * 1]*pow(p.theta_scale, i0/2.0f);
        } else if (sector % 3 == 2 && sector < 3 * p.sections[2]) {
            theta_base = rope_data_pos[i2 + p.ne02 * 2]*pow(p.theta_scale, i0/2.0f);
        } else if (sector % 3 == 0 && sector < 3 * p.sections[0]) {
            theta_base = rope_data_pos[i2]*pow(p.theta_scale, i0/2.0f);
        } else {
            theta_base = rope_data_pos[i2 + p.ne02 * 3]*pow(p.theta_scale, i0/2.0f);
        }
    } else {
        if (sector < p.sections[0]) {
            theta_base = rope_data_pos[i2]*pow(p.theta_scale, i0/2.0f);
        }
        else if (sector >= p.sections[0] && sector < sec_w) {
            theta_base = rope_data_pos[i2 + p.ne02 * 1]*pow(p.theta_scale, i0/2.0f);
        }
        else if (sector >= sec_w && sector < sec_w + p.sections[2]) {
            theta_base = rope_data_pos[i2 + p.ne02 * 2]*pow(p.theta_scale, i0/2.0f);
        }
        else if (sector >= sec_w + p.sections[2]) {
            theta_base = rope_data_pos[i2 + p.ne02 * 3]*pow(p.theta_scale, i0/2.0f);
        }
    }

    const float freq_factor = p.has_ff != 0 ? rope_data_ff[i0/2] : 1.0f;

    float cos_theta, sin_theta;
    rope_yarn(theta_base / freq_factor, i0, cos_theta, sin_theta, p);

    const float x0 = float(rope_data_a[ix + 0]);
    const float x1 = float(rope_data_a[ix + p.n_dims/2]);

    rope_data_d[idst + 0]          = ROPE_D_TYPE(x0*cos_theta - x1*sin_theta);
    rope_data_d[idst + p.n_dims/2] = ROPE_D_TYPE(x0*sin_theta + x1*cos_theta);
}

void rope_vision(const uint i0, const uint i1, const uint i2, const uint i3, rope_params p) {
    if (i0 >= p.ne00) {
        return;
    }

    const uint idst = i0/2 + i1 * p.nb11 + i2 * p.nb12 + i3 * p.nb13;
    const uint ix = rope_a_coord(i0/2, i1, i2, i3, p);

    const int sect_dims = p.sections[0] + p.sections[1];
    const int sec_w = p.sections[1] + p.sections[0];
    const uint sector = (i0 / 2) % sect_dims;

    float theta_base = 0.0;
    if (sector < p.sections[0]) {
        const uint p0 = sector;
        theta_base = rope_data_pos[i2]*pow(p.theta_scale, p0);
    }
    else if (sector >= p.sections[0] && sector < sec_w) {
        const uint p0 = sector - p.sections[0];
        theta_base = rope_data_pos[i2 + p.ne02]*pow(p.theta_scale, p0);
    }

    const float freq_factor = p.has_ff != 0 ? rope_data_ff[i0/2] : 1.0f;

    float cos_theta, sin_theta;
    rope_yarn(theta_base / freq_factor, i0, cos_theta, sin_theta, p);

    const float x0 = float(rope_data_a[ix + 0]);
    const float x1 = float(rope_data_a[ix + p.n_dims]);

    rope_data_d[idst + 0]        = ROPE_D_TYPE(x0*cos_theta - x1*sin_theta);
    rope_data_d[idst + p.n_dims] = ROPE_D_TYPE(x0*sin_theta + x1*cos_theta);
}