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Add 7D broadcast test with non-adjacent dimensions

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Tests element space size calculation when two non-adjacent middle
dimensions (dims 2 and 4) have stride 0 (broadcast).
This commit is contained in:
Max Podkorytov
2026-01-20 10:52:54 -06:00
parent e1f2d45ef4
commit af1f05efad
1 changed files with 50 additions and 6 deletions
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56
test/util/unit_tensor_descriptor_helper.cpp
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@@ -40,6 +40,32 @@ TEST(MakeNaiveTensorDescriptor, BroadcastDimension)
EXPECT_EQ(desc.GetElementSpaceSize(), 5);
}
TEST(MakeNaiveTensorDescriptor, BroadcastNonAdjacentDims7D)
{
// 7D tensor: 2x3x5x7x11x13x17 with broadcast on dims 2 and 4 (non-adjacent)
// Underlying data is 2x3x7x13x17 = 9282 elements, broadcast over dims 2 and 4
// strides: [4641, 1547, 0, 221, 0, 17, 1]
// element_space_size = 1 + (2-1)*4641 + (3-1)*1547 + (5-1)*0 + (7-1)*221
// + (11-1)*0 + (13-1)*17 + (17-1)*1
// = 1 + 4641 + 3094 + 0 + 1326 + 0 + 204 + 16 = 9282
constexpr auto lengths = make_tuple(Number<2>{},
Number<3>{},
Number<5>{},
Number<7>{},
Number<11>{},
Number<13>{},
Number<17>{});
constexpr auto strides = make_tuple(Number<4641>{},
Number<1547>{},
Number<0>{},
Number<221>{},
Number<0>{},
Number<17>{},
Number<1>{});
constexpr auto desc = make_naive_tensor_descriptor(lengths, strides);
EXPECT_EQ(desc.GetElementSpaceSize(), 9282);
}
TEST(MakeNaiveTensorDescriptor, WithPaddingArbitrary)
{
// 11x7x3 tensor with arbitrary strides [2, 97, 23] (prime numbers, no common factors)
@@ -166,8 +192,14 @@ TEST(MakeNaiveTensorDescriptorPacked, Simple8D)
{
// 8D packed tensor with small prime dimensions: 2x3x5x7x11x13x2x3
// element_space_size = 2*3*5*7*11*13*2*3 = 180180
constexpr auto lengths = make_tuple(Number<2>{}, Number<3>{}, Number<5>{}, Number<7>{},
Number<11>{}, Number<13>{}, Number<2>{}, Number<3>{});
constexpr auto lengths = make_tuple(Number<2>{},
Number<3>{},
Number<5>{},
Number<7>{},
Number<11>{},
Number<13>{},
Number<2>{},
Number<3>{});
constexpr auto desc = make_naive_tensor_descriptor_packed(lengths);
EXPECT_EQ(desc.GetElementSpaceSize(), 180180);
}
@@ -179,10 +211,22 @@ TEST(MakeNaiveTensorDescriptor, ElementSpaceSize8D)
// This gives strides: [25935, 133, 5187, 19, 881790, 399, 51870, 1]
// Note: strides go up/down/up/down - not monotonously increasing or decreasing
// element_space_size = 2*3*5*7*11*13*17*19 = 9699690
constexpr auto lengths = make_tuple(Number<2>{}, Number<3>{}, Number<5>{}, Number<7>{},
Number<11>{}, Number<13>{}, Number<17>{}, Number<19>{});
constexpr auto strides = make_tuple(Number<25935>{}, Number<133>{}, Number<5187>{}, Number<19>{},
Number<881790>{}, Number<399>{}, Number<51870>{}, Number<1>{});
constexpr auto lengths = make_tuple(Number<2>{},
Number<3>{},
Number<5>{},
Number<7>{},
Number<11>{},
Number<13>{},
Number<17>{},
Number<19>{});
constexpr auto strides = make_tuple(Number<25935>{},
Number<133>{},
Number<5187>{},
Number<19>{},
Number<881790>{},
Number<399>{},
Number<51870>{},
Number<1>{});
constexpr auto desc = make_naive_tensor_descriptor(lengths, strides);
EXPECT_EQ(desc.GetElementSpaceSize(), 9699690);
}