From b229c92d30655f30f445bd99a4f89636af10098d Mon Sep 17 00:00:00 2001
From: Antonio De Lucreziis <antonio.delucreziis@gmail.com>
Date: Thu, 13 Mar 2025 13:50:46 +0100
Subject: [PATCH] griejipger

---
 .vscode/settings.json                  | 2 ++
 arnoldi.c                              | 5 +++--
 matrices/laplacian/julia-laplaciano.jl | 4 ++--
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/.vscode/settings.json b/.vscode/settings.json
index 3e5f9e5..00f9e85 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -10,9 +10,11 @@
         "LAPACKE",
         "MATDENSE",
         "MATMPIAIJ",
+        "matwrite",
         "PETSC",
         "PETSCVIEWERHDF",
         "Reorthogonalization",
+        "spdiagm",
         "VECMPI"
     ]
 }
diff --git a/arnoldi.c b/arnoldi.c
index b956510..1b13f9d 100644
--- a/arnoldi.c
+++ b/arnoldi.c
@@ -194,9 +194,10 @@ int main(int argc, char **argv) {
 PetscErrorCode ArnoldiIteration(Mat A, Vec b, PetscInt n, PetscInt m, Vec *Q, double *h) {
     PetscFunctionBeginUser;
 
-    int rank;
+    int rank, total;
     MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
-    printf("Rank %d\n", rank);
+    MPI_Comm_size(PETSC_COMM_WORLD, &total);
+    printf("Process %d of %d\n", rank, total);
 
     PetscScalar eps = 1e-12;
 
diff --git a/matrices/laplacian/julia-laplaciano.jl b/matrices/laplacian/julia-laplaciano.jl
index dcc29bd..f38becc 100644
--- a/matrices/laplacian/julia-laplaciano.jl
+++ b/matrices/laplacian/julia-laplaciano.jl
@@ -2,8 +2,8 @@ using SparseArrays
 using MAT
 
 # 11 x 16
-nx = 10
-ny = 15
+nx = 11 - 1
+ny = 16 - 1
 ex = fill(1, nx)
 ey = fill(1, ny)
 Dxx = spdiagm(-1 => ex, 0 => -2 * ex, +1 => ex)