Add SpMV test for DIA-I and DIA-J

[aartbik]

No description provided.

[Copilot]

Pull Request Overview

Adds a new sparse matrix-vector multiply (SpMV) test for the DIA storage format using both row-based (DIA_INDEX_I) and column-based (DIA_INDEX_J) indexing.

• Updates CMakeLists to include the new test file.
• Implements helper routines to build a 4×4 tridiagonal test matrix (makeDIA), input vector (makeB), and expected output vector (makeC), then runs and verifies matvec for both index schemes.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
test/CMakeLists.txt	Registered 00_sparse/Dia.cu in test_sources
test/00_sparse/Dia.cu	New test file for DIA-format SpMV (I and J)

Comments suppressed due to low confidence (3)

test/00_sparse/Dia.cu:52

• [nitpick] The variable name 'd' is ambiguous; consider renaming it to 'num_diagonals' to clarify its purpose.

const index_t d = 3;

test/00_sparse/Dia.cu:53

• [nitpick] The single-letter tensor variable 'D' could be more descriptive—e.g., 'diag_data'—to improve readability.

auto D = make_tensor<T>({d * n});

test/00_sparse/Dia.cu:78

• [nitpick] The tensor variable 'O' is non-descriptive; consider renaming it to 'offsets' for clarity.

auto O = make_tensor<index_t>({d});

[cliffburdick]

/build

[cliffburdick]

/build

[cliffburdick]

/build