Use RawIndex = std::vector<std::array<.., 2>>.

The memory layout of an `std::vector<std::array<...>>` is better than `std::vector<std::vector<...>>`. This allows HighFive to avoid numerous allocations and copies.
BlueBrain · Oct 18, 2023 · de59161 · de59161
1 parent e49d49c
commit de59161
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/edge_index.cpp b/src/edge_index.cpp
@@ -15,6 +15,7 @@
 #include <set>
 #include <unordered_map>
 #include <vector>
+#include <array>
 
 
 namespace bbp {
@@ -23,7 +24,7 @@ namespace edge_index {
 
 namespace {
 
-using RawIndex = std::vector<std::vector<uint64_t>>;
+using RawIndex = std::vector<std::array<uint64_t, 2>>;
 
 const char* const SOURCE_NODE_ID_DSET = "source_node_id";
 const char* const TARGET_NODE_ID_DSET = "target_node_id";