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ggml : fix quantized cpy op #12310

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ggml : fix quantized cpy op #12310

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b971d06
ggml : fix quantized cpy op
ggerganov Mar 10, 2025
a3e78dc
tests : add cpy tests for all types
ggerganov Mar 10, 2025
bc25236
tests : add BF16 copy tests
ggerganov Mar 11, 2025
938c779
tests : fix loop for same-type copy
ggerganov Mar 11, 2025
3384f36
tests : add option to permute the dst tensor
ggerganov Mar 11, 2025
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22 changes: 13 additions & 9 deletions ggml/src/ggml-cpu/ggml-cpu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3111,7 +3111,7 @@ static void ggml_compute_forward_dup_same_cont(
const int nth = params->nth; // number of threads

// parallelize by elements
const int ne = ggml_nelements(dst);
const int ne = ggml_nelements(src0)/ggml_blck_size(src0->type);
const int dr = (ne + nth - 1) / nth;
const int ie0 = dr * ith;
const int ie1 = MIN(ie0 + dr, ne);
Expand Down Expand Up @@ -4055,7 +4055,6 @@ static void ggml_compute_forward_dup_f32(
static void ggml_compute_forward_dup_bytes(
const struct ggml_compute_params * params,
struct ggml_tensor * dst) {

const struct ggml_tensor * src0 = dst->src[0];

GGML_ASSERT(ggml_nelements(dst) == ggml_nelements(src0));
Expand All @@ -4069,10 +4068,10 @@ static void ggml_compute_forward_dup_bytes(
}

const size_t type_size = ggml_type_size(src0->type);

const int ith = params->ith; // thread index
const int nth = params->nth; // number of threads


// parallelize by rows
const int nr = ne01;
// number of rows per thread
Expand All @@ -4082,10 +4081,10 @@ static void ggml_compute_forward_dup_bytes(
const int ir1 = MIN(ir0 + dr, nr);

if (src0->type == dst->type &&
ne00 == ne0 &&
ggml_are_same_shape(src0, dst) &&
nb00 == type_size && nb0 == type_size) {
// copy by rows
const size_t rs = ne00 * type_size;
const size_t rs = ggml_row_size(src0->type, ne00);
for (int64_t i03 = 0; i03 < ne03; i03++) {
for (int64_t i02 = 0; i02 < ne02; i02++) {
for (int64_t i01 = ir0; i01 < ir1; i01++) {
Expand Down Expand Up @@ -4146,9 +4145,12 @@ static void ggml_compute_forward_dup_bytes(
int64_t i12 = 0;
int64_t i13 = 0;

// number of blocks in a row
const int64_t nb = ne00/ggml_blck_size(src0->type);

for (int64_t i03 = 0; i03 < ne03; i03++) {
for (int64_t i02 = 0; i02 < ne02; i02++) {
i10 += ne00 * ir0;
i10 += nb * ir0;
while (i10 >= ne0) {
i10 -= ne0;
if (++i11 == ne1) {
Expand All @@ -4162,7 +4164,7 @@ static void ggml_compute_forward_dup_bytes(
}
}
for (int64_t i01 = ir0; i01 < ir1; i01++) {
for (int64_t i00 = 0; i00 < ne00; i00++) {
for (int64_t i00 = 0; i00 < nb; i00++) {
const char * src0_ptr = ((char *) src0->data + i00*nb00 + i01*nb01 + i02*nb02 + i03*nb03);
char * dst_ptr = ((char *) dst->data + i10*nb0 + i11*nb1 + i12*nb2 + i13*nb3);

Expand All @@ -4182,7 +4184,7 @@ static void ggml_compute_forward_dup_bytes(
}
}
}
i10 += ne00 * (ne01 - ir1);
i10 += nb * (ne01 - ir1);
while (i10 >= ne0) {
i10 -= ne0;
if (++i11 == ne1) {
Expand Down Expand Up @@ -14067,7 +14069,9 @@ static void ggml_compute_forward(struct ggml_compute_params * params, struct ggm
}

// extra_buffer op?
if (ggml_cpu_extra_compute_forward(params, tensor)) return;
if (ggml_cpu_extra_compute_forward(params, tensor)) {
return;
}

switch (tensor->op) {
case GGML_OP_DUP:
Expand Down
9 changes: 9 additions & 0 deletions tests/test-backend-ops.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3929,6 +3929,15 @@ static std::vector<std::unique_ptr<test_case>> make_test_cases_eval() {
test_cases.emplace_back(new test_set(GGML_TYPE_I32, GGML_TYPE_I32, {6, 5, 4, 3}, dim));
}

test_cases.emplace_back(new test_cpy(GGML_TYPE_Q8_0, GGML_TYPE_Q8_0, {256, 2, 3, 4}, {0, 1, 2, 3}));
test_cases.emplace_back(new test_cpy(GGML_TYPE_Q8_0, GGML_TYPE_Q8_0, {256, 2, 3, 4}, {0, 2, 1, 3}));

test_cases.emplace_back(new test_cpy(GGML_TYPE_Q4_0, GGML_TYPE_Q4_0, {256, 2, 3, 4}, {0, 1, 2, 3}));
test_cases.emplace_back(new test_cpy(GGML_TYPE_Q4_0, GGML_TYPE_Q4_0, {256, 2, 3, 4}, {0, 2, 3, 1}));

test_cases.emplace_back(new test_cpy(GGML_TYPE_Q4_K, GGML_TYPE_Q4_K, {256, 2, 3, 4}, {0, 1, 2, 3}));
test_cases.emplace_back(new test_cpy(GGML_TYPE_Q4_K, GGML_TYPE_Q4_K, {256, 2, 3, 4}, {0, 3, 1, 2}));

for (ggml_type type_src : {GGML_TYPE_F16, GGML_TYPE_F32}) {
for (ggml_type type_dst : all_types) {
test_cases.emplace_back(new test_cpy(type_src, type_dst, {256, 4, 4, 4}));
Expand Down
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