Note the difference between mpi_cholesky and mpi_cholesky_distributed

mpi/examples/matrix_decomposition/mpi_cholesky_distributed.c

@@ -1,6 +1,6 @@
 /* StarPU --- Runtime system for heterogeneous multicore architectures.
  *
- * Copyright (C) 2009-2011  Université de Bordeaux
+ * Copyright (C) 2009-2011, 2017  Université de Bordeaux
  * Copyright (C) 2010  Mehdi Juhoor <mjuhoor@gmail.com>
  * Copyright (C) 2010, 2011, 2012, 2013, 2015  CNRS
  *
@@ -18,6 +18,10 @@
 
 #include "mpi_cholesky.h"
 
+/* This is the same as matrix_decomposition, but the matrix is not allocated in
+ * totality on all nodes, thus allowing much bigger matrices, but doesn't allow
+ * trivial checks */
+
 int main(int argc, char **argv)
 {
 	/* create a simple definite positive symetric matrix example