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removing secondary reordering #314

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removing secondary reordering #314

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13 changes: 7 additions & 6 deletions src/client/Presets/PodAllToAll.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -154,15 +154,16 @@ int PodAllToAllPreset(EnvVars& ev,
return ERR_FATAL;
}
int groupSize = n / numGroups;
std::vector<MemDevice> devices(n);
std::vector<int> indices(n);
for (int k = 0; k < n; k++) indices[k] = k;
Utils::StrideGenerate(indices, groupStride);
int idx = 0;
for (int rank : ranks) {
for (int devIdx = 0; devIdx < numGpus; devIdx++) {
devices[indices[idx++]] = {memType, devIdx, rank};
}

std::vector<MemDevice> devices(n);
for (int i = 0; i < n; i++) {
int const globalIdx = indices[i];
int const rankIdx = globalIdx / numGpus;
int const devIdx = globalIdx % numGpus;
devices[i] = {memType, devIdx, ranks[rankIdx]};
}

// Build transfers for every group, then run once per pod so all groups share the same
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