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k-quants : fix comments about block sizing (#3499)

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Johannes Rudolph 2023-10-08 12:21:19 +02:00 committed by GitHub
parent 94e502dfb7
commit a1202a31ed
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1 changed files with 5 additions and 5 deletions
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k_quants.h
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@ -29,7 +29,7 @@
// 2-bit quantization
// weight is represented as x = a * q + b
// 16 blocks of 16 elemenets each
// 16 blocks of 16 elements each
// Effectively 2.5625 bits per weight
typedef struct {
uint8_t scales[QK_K/16]; // scales and mins, quantized with 4 bits
@ -41,7 +41,7 @@ static_assert(sizeof(block_q2_K) == 2*sizeof(ggml_fp16_t) + QK_K/16 + QK_K/4, "w
// 3-bit quantization
// weight is represented as x = a * q
// 16 blocks of 16 elemenets each
// 16 blocks of 16 elements each
// Effectively 3.4375 bits per weight
#ifdef GGML_QKK_64
typedef struct {
@ -62,7 +62,7 @@ static_assert(sizeof(block_q3_K) == sizeof(ggml_fp16_t) + QK_K / 4 + QK_K / 8 +
#endif
// 4-bit quantization
// 16 blocks of 32 elements each
// 8 blocks of 32 elements each
// weight is represented as x = a * q + b
// Effectively 4.5 bits per weight
#ifdef GGML_QKK_64
@ -83,7 +83,7 @@ static_assert(sizeof(block_q4_K) == 2*sizeof(ggml_fp16_t) + K_SCALE_SIZE + QK_K/
#endif
// 5-bit quantization
// 16 blocks of 32 elements each
// 8 blocks of 32 elements each
// weight is represented as x = a * q + b
// Effectively 5.5 bits per weight
#ifdef GGML_QKK_64
@ -107,7 +107,7 @@ static_assert(sizeof(block_q5_K) == 2*sizeof(ggml_fp16_t) + K_SCALE_SIZE + QK_K/
// 6-bit quantization
// weight is represented as x = a * q
// 16 blocks of 16 elemenets each
// 16 blocks of 16 elements each
// Effectively 6.5625 bits per weight
typedef struct {
uint8_t ql[QK_K/2]; // quants, lower 4 bits