Add sparse matrix usage to example #13
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lslusarczyk
reviewed
Jan 20, 2025
| b.push_back(i); | ||
| } | ||
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| dr::mp::broadcasted_vector<double> broadcasted_b; |
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In lines 26-31 all ranks already computed their vector B
What is the step with "broadcasted_vector" for?
src/example7.cpp
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| std::vector<double> b; | ||
| b.reserve(matrix.shape().second); | ||
| std::vector<double> res(matrix.shape().first); |
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please move "res" declaration just before its first usage (calling gemv)
src/example7.cpp
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| std::vector<double> b; | ||
| b.reserve(matrix.shape().second); | ||
| std::vector<double> res(matrix.shape().first); | ||
| for (auto i = 0; i < matrix.shape().second; i++) { |
| } | ||
| for (auto i = 0; i < nnz; i++) { | ||
| colInd[i] = | ||
| (i % 2) * (std::max(i / 2, 1)); // column on 0 and diagonal (with |
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can we draw that matrix in a comment?
something like this (not sure if this is your matrix shape, just an example)
// X X X ... X
// 0 X 0 ... 0
// 0 0 X 0 ... 0
// 0 0 ... X
| dr::mp::csr_eq_distribution<V, I, dr::mp::MpiBackend>> | ||
| matrix(local_data, root); | ||
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| std::vector<double> b; |
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same comments an in the first example in this code
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