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fixed a missing case for transposed copy #17081

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Merged
merged 1 commit into from
Nov 7, 2025
+2 −3
Merged

fixed a missing case for transposed copy #17081

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4 changes: 1 addition & 3 deletions ggml/src/ggml-cuda/cpy.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -198,16 +198,14 @@ static void ggml_cpy_flt_cuda(
if (transposed) {
GGML_ASSERT(ne == ne00*ne01*ne02); // ne[3] is 1 assumed
int ne00n, ne01n, ne02n;
if (nb00 < nb02) {
if (nb00 <= nb02) { // most likely safe to handle nb00 = nb02 case here
ne00n = ne00;
ne01n = ne01;
ne02n = ne02;
} else if (nb00 > nb02) {
ne00n = ne00;
ne01n = ne01*ne02;
ne02n = 1;
} else {
GGML_ASSERT(false);
}

dim3 dimGrid( (ne01n + CUDA_CPY_TILE_DIM_2D - 1) / CUDA_CPY_TILE_DIM_2D,
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1 change: 1 addition & 0 deletions tests/test-backend-ops.cpp
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Expand Up @@ -6648,6 +6648,7 @@ static std::vector<std::unique_ptr<test_case>> make_test_cases_eval() {
test_cases.emplace_back(new test_cpy(GGML_TYPE_F16, GGML_TYPE_F16, {256, 4, 1, 1}, {0, 0, 0, 0}, {0, 0, 0, 0}, true));
test_cases.emplace_back(new test_cpy(GGML_TYPE_F32, GGML_TYPE_F32, {256, 4, 1, 1}, {0, 0, 0, 0}, {0, 0, 0, 0}, true));
test_cases.emplace_back(new test_cpy(GGML_TYPE_BF16, GGML_TYPE_BF16, {256, 4, 1, 1}, {0, 0, 0, 0}, {0, 0, 0, 0}, true));
test_cases.emplace_back(new test_cpy(GGML_TYPE_F32, GGML_TYPE_F32, {256, 1, 4, 1}, {1, 2, 0, 3}, {0, 0, 0, 0}));

test_cases.emplace_back(new test_cont());
test_cases.emplace_back(new test_cont(GGML_TYPE_F32, {2, 1, 1 ,1}));
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