fix gather

2025-05-31 16:34:17 +02:00
parent 4581a62126
commit b1bf9af98b
1 changed files with 5 additions and 1 deletions
--- a/lab10/jacobi/jacobi_mpi.cpp
+++ b/lab10/jacobi/jacobi_mpi.cpp
@@ -162,7 +162,11 @@ Jacobi::Result JacobiMPI::run(const Matrix &init, double epsilon,

  Matrix result = Matrix::zeros(numProc * numRows, numCols);

-  MPI_Gather(&phi[t0], numRows * numCols, MPI_DOUBLE, result.data(),
+  if (rank == 0) {
+    std::cout << "try to gather" << std::endl;
+  }
+
+  MPI_Gather(phi[t0].data(), numRows * numCols, MPI_DOUBLE, result.data(),
             numRows * numCols, MPI_DOUBLE, 0, MPI_COMM_WORLD);

  return Jacobi::Result{phi[t0], dist, nIter};