XBT_VERB("(%d->%d): (%.2f, %.2f)-> (%.2f, %.2f)", i, j, src_start, src_end, dst_start, dst_end);
task->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
if ((src_end > dst_start) && (dst_end > src_start)) { /* There is something to send */
XBT_VERB("(%d->%d): (%.2f, %.2f)-> (%.2f, %.2f)", i, j, src_start, src_end, dst_start, dst_end);
task->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
if ((src_end > dst_start) && (dst_end > src_start)) { /* There is something to send */