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Support Q4_1

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This commit is contained in:
Howard Su 2023-05-17 23:42:17 +08:00
parent b8d69650dc
commit d521d09380
1 changed files with 22 additions and 3 deletions
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25
ggml.c
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@ -816,15 +816,34 @@ static_assert(sizeof(block_q8_1) == 2*sizeof(float) + QK8_1, "wrong q8_1 block s
void quantize_upgrade(enum ggml_type type, void* data, size_t size) {
if (type == GGML_TYPE_Q4_0) {
int qk = ggml_blck_size(type);
const size_t nb = size / sizeof(block_q4_0);
block_q4_0 *blk = (block_q4_0 *)data;
block_q4_0 new_blk;
for (size_t i = 0; i < nb ; i++) {
for (size_t j = 0; j < qk/4; j++)
{
for (size_t j = 0; j < qk/4; j++) {
// old: d0, d1, d2, d3, d4, ....... d_half, d_half1
// new: d0, d_half, d1, d_half1
uint8_t d1;
uint8_t d2;
d1 = blk[i].qs[0 + j];
d2 = blk[i].qs[qk/4 + j];
new_blk.qs[0 + j * 2] = (d1 & 0x0f) | ((d2 & 0x0f) << 4);
new_blk.qs[1 + j * 2] = (d1 >> 4) | (d2 & 0xf0);
}
memcpy(blk[i].qs, new_blk.qs, sizeof(new_blk.qs));
}
} else if (type == GGML_TYPE_Q4_1) {
int qk = ggml_blck_size(type);
const size_t nb = size / sizeof(block_q4_1);
block_q4_1 *blk = (block_q4_1 *)data;
block_q4_1 new_blk;
for (size_t i = 0; i < nb ; i++) {
for (size_t j = 0; j < qk/4; j++) {
// old: d0, d1, d2, d3, d4, ....... d_half, d_half1
// new: d0, d_half, d1, d_half1
uint8_t d1;