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Improve UnitCL pow testing. #278

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Jan 4, 2024
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Improve UnitCL pow testing. #278

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3 changes: 3 additions & 0 deletions source/cl/test/UnitCL/include/kts/execution.h
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Original file line number Diff line number Diff line change
Expand Up @@ -347,6 +347,9 @@ class HalfParamExecution : public ExecutionWithParam<unsigned> {
/// @brief Returns true if parameter at index has a scalar type
/// @param[in] Index of parameter to check
bool IsArgScalar(unsigned index) const;

/// @brief Returns a vector of edge cases that need extra testing.
virtual const std::vector<cl_ushort> &GetEdgeCases() const;
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};

template <typename T>
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14 changes: 11 additions & 3 deletions source/cl/test/UnitCL/source/kts/fp16_execution.cpp
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Expand Up @@ -79,14 +79,23 @@ bool HalfParamExecution::IsArgScalar(unsigned index) const {
std::find(scalar_arg_indices.begin(), scalar_arg_indices.end(), index);
}

const std::vector<cl_ushort> &HalfParamExecution::GetEdgeCases() const {
static const std::vector<cl_ushort> EdgeCases =
std::vector<cl_ushort>(InputGenerator::half_edge_cases.begin(),
InputGenerator::half_edge_cases.end());
return EdgeCases;
}

template <size_t N>
unsigned HalfParamExecution::FillInputBuffers(
std::array<input_details_t, N> &inputs) {
const auto &edge_cases = GetEdgeCases();

// The more parameters a functions takes, the more data we need for verifying
// it's behaviour across the increased range of input combinations. Even in
// wimpy mode we want to test at least all the combinations of edge case
// values which have been known to cause failures.
const unsigned edge_case_len = InputGenerator::half_edge_cases.size();
const unsigned edge_case_len = edge_cases.size();
size_t cartesian_len = edge_case_len;
for (size_t i = 1; i < N; i++) {
cartesian_len *= edge_case_len;
Expand Down Expand Up @@ -136,8 +145,7 @@ unsigned HalfParamExecution::FillInputBuffers(
edge_idx = i / div;
}

input[i] =
cargo::bit_cast<cl_half>(InputGenerator::half_edge_cases[edge_idx]);
input[i] = cargo::bit_cast<cl_half>(edge_cases[edge_idx]);
}
}

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19 changes: 16 additions & 3 deletions source/cl/test/UnitCL/source/ktst_precision.cpp
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Expand Up @@ -413,6 +413,17 @@ UCL_EXECUTION_TEST_SUITE_P(HalfOperatorTest, testing::Values(OPENCL_C),

using HalfMathBuiltins = HalfParamExecution;

struct HalfMathBuiltinsPow : HalfMathBuiltins {
const std::vector<cl_ushort> &GetEdgeCases() const override {
static const std::vector<cl_ushort> EdgeCases = [&] {
std::vector<cl_ushort> EdgeCases = HalfMathBuiltins::GetEdgeCases();
EdgeCases.push_back(0x39f6);
return EdgeCases;
}();
return EdgeCases;
}
};

TEST_P(HalfMathBuiltins, Precision_08_Half_Ldexp) {
if (!UCL::hasHalfSupport(device)) {
GTEST_SKIP();
Expand Down Expand Up @@ -1774,7 +1785,7 @@ TEST_P(HalfMathBuiltins, Precision_79_Half_tanh) {
TestAgainstRef<2_ULP>(tanh_ref);
}

TEST_P(HalfMathBuiltins, Precision_80_Half_pow) {
TEST_P(HalfMathBuiltinsPow, Precision_80_Half_pow) {
if (!UCL::hasHalfSupport(device)) {
GTEST_SKIP();
}
Expand All @@ -1797,7 +1808,7 @@ TEST_P(HalfMathBuiltins, Precision_80_Half_pow) {
}

// TODO: OCK-523
TEST_P(HalfMathBuiltins, DISABLED_Precision_81_Half_powr) {
TEST_P(HalfMathBuiltinsPow, DISABLED_Precision_81_Half_powr) {
if (!UCL::hasHalfSupport(device)) {
GTEST_SKIP();
}
Expand Down Expand Up @@ -1833,7 +1844,7 @@ TEST_P(HalfMathBuiltins, DISABLED_Precision_81_Half_powr) {
TestAgainstRef<4_ULP>(powr_ref);
}

TEST_P(HalfMathBuiltins, Precision_82_Half_pown) {
TEST_P(HalfMathBuiltinsPow, Precision_82_Half_pown) {
if (!UCL::hasHalfSupport(device)) {
GTEST_SKIP();
}
Expand Down Expand Up @@ -1894,6 +1905,8 @@ TEST_P(HalfMathBuiltins, Precision_83_Half_rootn) {
// Miss out half3 to avoid complications with having sizeof(half4)
UCL_EXECUTION_TEST_SUITE_P(HalfMathBuiltins, testing::Values(OPENCL_C),
testing::Values(1, 2, 4, 8, 16));
UCL_EXECUTION_TEST_SUITE_P(HalfMathBuiltinsPow, testing::Values(OPENCL_C),
testing::Values(1, 2, 4, 8, 16));

TEST_P(Execution, Precision_84_Double_Remquo) {
// Whether or not the kernel will be vectorized at a global size of 1 is
Expand Down