mirror of
https://github.com/ggerganov/llama.cpp.git
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59 lines
2.4 KiB
Plaintext
59 lines
2.4 KiB
Plaintext
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#version 450
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#include "dequant_head.comp"
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layout(local_size_x = 64, local_size_y = 1, local_size_z = 1) in;
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layout (binding = 0) readonly buffer A {A_TYPE data_a[];};
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layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
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void main() {
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[[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
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const uint i = gl_WorkGroupID.x * 256 + wgy;
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if (i >= p.M * p.K / QUANT_K) {
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return;
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}
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const uint tid = gl_LocalInvocationID.x;
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const uint il = tid / 16;
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const uint ir = tid % 16;
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const uint is = 2 * il;
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const FLOAT_TYPE dall = FLOAT_TYPE(data_a[i].d.x);
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const FLOAT_TYPE dmin = FLOAT_TYPE(data_a[i].d.y);
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const uint y_idx = i * QUANT_K + 64 * il + 2 * ir;
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const uint qs_idx = 32*il + 2 * ir;
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const uint qh_idx = 2 * ir;
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uint8_t sc;
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uint8_t m;
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if (is < 4) {
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sc = uint8_t(data_a[i].scales[is] & 63);
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m = uint8_t(data_a[i].scales[is + 4] & 63);
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} else {
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sc = uint8_t((data_a[i].scales[is + 4] & 0xF) | ((data_a[i].scales[is - 4] >> 6) << 4));
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m = uint8_t((data_a[i].scales[is + 4] >> 4) | ((data_a[i].scales[is ] >> 6) << 4));
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}
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const FLOAT_TYPE d1 = dall * sc;
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const FLOAT_TYPE m1 = dmin * m;
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if (is < 4) {
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sc = uint8_t(data_a[i].scales[is + 1] & 63);
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m = uint8_t(data_a[i].scales[is + 5] & 63);
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} else {
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sc = uint8_t((data_a[i].scales[is + 5] & 0xF) | ((data_a[i].scales[is - 3] >> 6) << 4));
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m = uint8_t((data_a[i].scales[is + 5] >> 4) | ((data_a[i].scales[is + 1] >> 6) << 4));
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}
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const FLOAT_TYPE d2 = dall * sc;
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const FLOAT_TYPE m2 = dmin * m;
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const uint8_t hm1 = uint8_t(1 << (2 * il ));
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const uint8_t hm2 = uint8_t(1 << (2 * il + 1));
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data_b[y_idx ] = D_TYPE(d1 * FLOAT_TYPE((data_a[i].qs[qs_idx ] & 0xF) + (((data_a[i].qh[qh_idx ] & hm1) != 0) ? 16 : 0)) - m1);
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data_b[y_idx + 1] = D_TYPE(d1 * FLOAT_TYPE((data_a[i].qs[qs_idx + 1] & 0xF) + (((data_a[i].qh[qh_idx + 1] & hm1) != 0) ? 16 : 0)) - m1);
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data_b[y_idx + 32] = D_TYPE(d2 * FLOAT_TYPE((data_a[i].qs[qs_idx ] >> 4) + (((data_a[i].qh[qh_idx ] & hm2) != 0) ? 16 : 0)) - m2);
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data_b[y_idx + 33] = D_TYPE(d2 * FLOAT_TYPE((data_a[i].qs[qs_idx + 1] >> 4) + (((data_a[i].qh[qh_idx + 1] & hm2) != 0) ? 16 : 0)) - m2);
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}
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}
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