URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=410bc1bd07387... Author: Marco Poletti poletti.marco@gmail.com Date: Thu Sep 16 17:49:42 2010 +0200

Distributed_Sparse_Matrix: fix bug in exiting_index_reducer_functor, affecting performance.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=845523ef94033... Author: Marco Poletti poletti.marco@gmail.com Date: Thu Sep 16 11:37:56 2010 +0200

Distributed_Sparse_Matrix: print the number of pivot operations in the destructor.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=389d8c2fc3b5d... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 21:28:11 2010 +0200

Revert "Distributed_Sparse_Matrix: use a dynamicly-allocated array instead of a vector for the reduce operation in float_entering_index."

This reverts commit 4d5f95afb8b9a662e3b6f2160a15a49c971a2972.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=73999983bdc29... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 19:31:58 2010 +0200

Distributed_Sparse_Matrix: optimize exact_entering_index(), exploiting the local copies of working_cost.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=4d5f95afb8b9a... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 19:14:28 2010 +0200

Distributed_Sparse_Matrix: use a dynamicly-allocated array instead of a vector for the reduce operation in float_entering_index.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=d03f80ce8f87b... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 18:32:42 2010 +0200

Distributed_Sparse_Matrix: optimize float_entering_index(), exploiting the local copies of working_cost.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=0fc1afaecf71d... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 17:57:01 2010 +0200

Distributed_Sparse_Matrix: store the working_cost in worker nodes, add a set_working_cost() operation and update the nodes' working_cost in get_exiting_and_pivot().

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=46e1b90166429... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 17:04:49 2010 +0200

Distributed_Sparse_Matrix: optimize exact_entering_index() for sparse working_cost rows.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=d264fd25c3eb8... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:43:27 2010 +0200

Distributed_Sparse_Matrix: optimize float_entering_index() for sparse working_cost rows.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=9a06a4a19080f... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:37:56 2010 +0200

Distributed_Sparse_Matrix: optimize compute_working_cost() for sparse working_cost rows.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=fe9a6af26af0b... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:36:52 2010 +0200

Sparse_Row: optimize linear_combine() for the case (coeff1 == 1).

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=7eecade095671... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:36:23 2010 +0200

Sparse_Row: avoid creating stored zeroes in combine_needs_second().

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=87f29dca86f2b... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:13:30 2010 +0200

Distributed_Sparse_Matrix: optimize compute_working_cost__common() for sparse working_cost rows.

URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=307394ac54c4f... Author: Marco Poletti poletti.marco@gmail.com Date: Tue Sep 14 16:03:53 2010 +0200

MIP_Problem: some little optimizations to exploit sparse workin_cost rows.