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Fix Coo out of bounds access for strided vectors #807

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Jul 1, 2021
Merged

Fix Coo out of bounds access for strided vectors #807

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56c01e0
fix Coo overwriting padding
upsj Jun 30, 2021
ca2c8cf
review updates
upsj Jun 30, 2021
aba4f73
review updates
upsj Jul 1, 2021
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17 changes: 10 additions & 7 deletions omp/matrix/coo_kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,11 +67,12 @@ void spmv(std::shared_ptr<const OmpExecutor> exec,
const matrix::Coo<ValueType, IndexType> *a,
const matrix::Dense<ValueType> *b, matrix::Dense<ValueType> *c)
{
#pragma omp parallel for
for (size_type i = 0; i < c->get_num_stored_elements(); i++) {
c->at(i) = zero<ValueType>();
#pragma omp parallel for collapse(2)
for (size_type i = 0; i < c->get_size()[0]; i++) {
for (size_type j = 0; j < c->get_size()[1]; j++) {
c->at(i, j) = zero<ValueType>();
}
}

spmv2(exec, a, b, c);
}

Expand All @@ -87,9 +88,11 @@ void advanced_spmv(std::shared_ptr<const OmpExecutor> exec,
matrix::Dense<ValueType> *c)
{
auto beta_val = beta->at(0, 0);
#pragma omp parallel for
for (size_type i = 0; i < c->get_num_stored_elements(); i++) {
c->at(i) *= beta_val;
#pragma omp parallel for collapse(2)
for (size_type i = 0; i < c->get_size()[0]; i++) {
for (size_type j = 0; j < c->get_size()[1]; j++) {
c->at(i, j) *= beta_val;
}
}

advanced_spmv2(exec, alpha, a, b, c);
Expand Down
32 changes: 32 additions & 0 deletions omp/test/matrix/coo_kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,22 @@ TEST_F(Coo, SimpleApplyIsEquivalentToRef)
}


TEST_F(Coo, SimpleApplyDoesntOverwritePadding)
{
set_up_apply_data();
auto dresult_padded =
Vec::create(omp, dresult->get_size(), dresult->get_stride() + 1);
dresult_padded->copy_from(dresult.get());
dresult_padded->get_values()[1] = 1234.0;

mtx->apply(y.get(), expected.get());
dmtx->apply(dy.get(), dresult.get());

GKO_ASSERT_MTX_NEAR(dresult, expected, 1e-14);
ASSERT_EQ(dresult_padded->get_values()[1], 1234.0);
}


TEST_F(Coo, AdvancedApplyIsEquivalentToRef)
{
set_up_apply_data();
Expand All @@ -168,6 +184,22 @@ TEST_F(Coo, AdvancedApplyIsEquivalentToRef)
}


TEST_F(Coo, AdvancedApplyDoesntOverwritePadding)
{
set_up_apply_data();
auto dresult_padded =
Vec::create(omp, dresult->get_size(), dresult->get_stride() + 1);
dresult_padded->copy_from(dresult.get());
dresult_padded->get_values()[1] = 1234.0;

mtx->apply(alpha.get(), y.get(), beta.get(), expected.get());
dmtx->apply(dalpha.get(), dy.get(), dbeta.get(), dresult.get());

GKO_ASSERT_MTX_NEAR(dresult, expected, 1e-14);
ASSERT_EQ(dresult_padded->get_values()[1], 1234.0);
}


TEST_F(Coo, SimpleApplyAddIsEquivalentToRef)
{
set_up_apply_data();
Expand Down
12 changes: 8 additions & 4 deletions reference/matrix/coo_kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -63,8 +63,10 @@ void spmv(std::shared_ptr<const ReferenceExecutor> exec,
const matrix::Coo<ValueType, IndexType> *a,
const matrix::Dense<ValueType> *b, matrix::Dense<ValueType> *c)
{
for (size_type i = 0; i < c->get_num_stored_elements(); i++) {
c->at(i) = zero<ValueType>();
for (size_type i = 0; i < c->get_size()[0]; i++) {
for (size_type j = 0; j < c->get_size()[1]; j++) {
c->at(i, j) = zero<ValueType>();
}
}
spmv2(exec, a, b, c);
}
Expand All @@ -81,8 +83,10 @@ void advanced_spmv(std::shared_ptr<const ReferenceExecutor> exec,
matrix::Dense<ValueType> *c)
{
auto beta_val = beta->at(0, 0);
for (size_type i = 0; i < c->get_num_stored_elements(); i++) {
c->at(i) *= beta_val;
for (size_type i = 0; i < c->get_size()[0]; i++) {
for (size_type j = 0; j < c->get_size()[1]; j++) {
c->at(i, j) *= beta_val;
}
}
advanced_spmv2(exec, alpha, a, b, c);
}
Expand Down
34 changes: 34 additions & 0 deletions reference/test/matrix/coo_kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -350,6 +350,21 @@ TYPED_TEST(Coo, AppliesToDenseVector)
}


TYPED_TEST(Coo, ApplyToStridedVectorKeepsPadding)
{
using Vec = typename TestFixture::Vec;
using T = typename TestFixture::value_type;
auto x = gko::initialize<Vec>({2.0, 1.0, 4.0}, this->exec);
auto y = Vec::create(this->exec, gko::dim<2>{2, 1}, 2);
y->get_values()[1] = 1234;

this->mtx->apply(x.get(), y.get());

GKO_ASSERT_MTX_NEAR(y, l({13.0, 5.0}), 0.0);
ASSERT_EQ(y->get_values()[1], T{1234});
}


TYPED_TEST(Coo, AppliesToMixedDenseVector)
{
using MixedVec = typename TestFixture::MixedVec;
Expand Down Expand Up @@ -432,6 +447,25 @@ TYPED_TEST(Coo, AppliesLinearCombinationToDenseVector)
}


TYPED_TEST(Coo, ApplyLinearCombinationToStridedVectorKeepsPadding)
{
using Vec = typename TestFixture::Vec;
using T = typename TestFixture::value_type;
auto alpha = gko::initialize<Vec>({-1.0}, this->exec);
auto beta = gko::initialize<Vec>({2.0}, this->exec);
auto x = gko::initialize<Vec>({2.0, 1.0, 4.0}, this->exec);
auto y = Vec::create(this->exec, gko::dim<2>{2, 1}, 2);
y->get_values()[1] = 1234;
y->at(0, 0) = 1.0;
y->at(1, 0) = 2.0;

this->mtx->apply(alpha.get(), x.get(), beta.get(), y.get());

GKO_ASSERT_MTX_NEAR(y, l({-11.0, -1.0}), 0.0);
ASSERT_EQ(y->get_values()[1], T{1234});
}


TYPED_TEST(Coo, AppliesLinearCombinationToMixedDenseVector)
{
using MixedVec = typename TestFixture::MixedVec;
Expand Down