X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/5809f0f4cd75ca84bb4b4f47185801ddd054c462..a21681e5aca1a37efb2e9001e5055dec94c5de41:/src/surf/fair_bottleneck.c diff --git a/src/surf/fair_bottleneck.c b/src/surf/fair_bottleneck.c deleted file mode 100644 index 8830107a0a..0000000000 --- a/src/surf/fair_bottleneck.c +++ /dev/null @@ -1,181 +0,0 @@ -/* Copyright (c) 2007-2011. The SimGrid Team. - * All rights reserved. */ - -/* This program is free software; you can redistribute it and/or modify it - * under the terms of the license (GNU LGPL) which comes with this package. */ - - -#include "xbt/sysdep.h" -#include "xbt/log.h" -#include "maxmin_private.h" -#include -#include - -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_maxmin); -#define SHOW_EXPR_G(expr) XBT_DEBUG(#expr " = %g",expr); -#define SHOW_EXPR_D(expr) XBT_DEBUG(#expr " = %d",expr); -#define SHOW_EXPR_P(expr) XBT_DEBUG(#expr " = %p",expr); - -void bottleneck_solve(lmm_system_t sys) -{ - lmm_variable_t var = NULL; - lmm_variable_t var_next = NULL; - lmm_constraint_t cnst = NULL; - s_lmm_constraint_t s_cnst; - lmm_constraint_t cnst_next = NULL; - lmm_element_t elem = NULL; - xbt_swag_t cnst_list = NULL; - xbt_swag_t var_list = NULL; - xbt_swag_t elem_list = NULL; - int i; - - static s_xbt_swag_t cnst_to_update; - - if (!(sys->modified)) - return; - - /* Init */ - xbt_swag_init(&(cnst_to_update), - xbt_swag_offset(s_cnst, saturated_constraint_set_hookup)); - - var_list = &(sys->variable_set); - XBT_DEBUG("Variable set : %d", xbt_swag_size(var_list)); - xbt_swag_foreach(var, var_list) { - int nb = 0; - var->value = 0.0; - XBT_DEBUG("Handling variable %p", var); - xbt_swag_insert(var, &(sys->saturated_variable_set)); - for (i = 0; i < var->cnsts_number; i++) { - if (var->cnsts[i].value == 0.0) - nb++; - } - if ((nb == var->cnsts_number) && (var->weight > 0.0)) { - XBT_DEBUG("Err, finally, there is no need to take care of variable %p", - var); - xbt_swag_remove(var, &(sys->saturated_variable_set)); - var->value = 1.0; - } - if (var->weight <= 0.0) { - XBT_DEBUG("Err, finally, there is no need to take care of variable %p", - var); - xbt_swag_remove(var, &(sys->saturated_variable_set)); - } - } - var_list = &(sys->saturated_variable_set); - - cnst_list = &(sys->active_constraint_set); - XBT_DEBUG("Active constraints : %d", xbt_swag_size(cnst_list)); - xbt_swag_foreach(cnst, cnst_list) { - xbt_swag_insert(cnst, &(sys->saturated_constraint_set)); - } - cnst_list = &(sys->saturated_constraint_set); - xbt_swag_foreach(cnst, cnst_list) { - cnst->remaining = cnst->bound; - cnst->usage = 0.0; - } - - XBT_DEBUG("Fair bottleneck Initialized"); - - /* - * Compute Usage and store the variables that reach the maximum. - */ - do { - if (XBT_LOG_ISENABLED(surf_maxmin, xbt_log_priority_debug)) { - XBT_DEBUG("Fair bottleneck done"); - lmm_print(sys); - } - XBT_DEBUG("******* Constraints to process: %d *******", - xbt_swag_size(cnst_list)); - xbt_swag_foreach_safe(cnst, cnst_next, cnst_list) { - int nb = 0; - XBT_DEBUG("Processing cnst %p ", cnst); - elem_list = &(cnst->element_set); - cnst->usage = 0.0; - xbt_swag_foreach(elem, elem_list) { - if (elem->variable->weight <= 0) - break; - if ((elem->value > 0) - && xbt_swag_belongs(elem->variable, var_list)) - nb++; - } - XBT_DEBUG("\tThere are %d variables", nb); - if (nb > 0 && !cnst->shared) - nb = 1; - if (!nb) { - cnst->remaining = 0.0; - cnst->usage = cnst->remaining; - xbt_swag_remove(cnst, cnst_list); - continue; - } - cnst->usage = cnst->remaining / nb; - XBT_DEBUG("\tConstraint Usage %p : %f with %d variables", cnst, - cnst->usage, nb); - } - - xbt_swag_foreach_safe(var, var_next, var_list) { - double min_inc = - var->cnsts[0].constraint->usage / var->cnsts[0].value; - for (i = 1; i < var->cnsts_number; i++) { - lmm_element_t elm = &var->cnsts[i]; - min_inc = MIN(min_inc, elm->constraint->usage / elm->value); - } - if (var->bound > 0) - min_inc = MIN(min_inc, var->bound - var->value); - var->mu = min_inc; - XBT_DEBUG("Updating variable %p maximum increment: %g", var, var->mu); - var->value += var->mu; - if (var->value == var->bound) { - xbt_swag_remove(var, var_list); - } - } - - xbt_swag_foreach_safe(cnst, cnst_next, cnst_list) { - XBT_DEBUG("Updating cnst %p ", cnst); - elem_list = &(cnst->element_set); - xbt_swag_foreach(elem, elem_list) { - if (elem->variable->weight <= 0) - break; - if (cnst->shared) { - XBT_DEBUG("\tUpdate constraint %p (%g) with variable %p by %g", - cnst, cnst->remaining, elem->variable, - elem->variable->mu); - double_update(&(cnst->remaining), - elem->value * elem->variable->mu); - } else { - XBT_DEBUG - ("\tNon-Shared variable. Update constraint usage of %p (%g) with variable %p by %g", - cnst, cnst->usage, elem->variable, elem->variable->mu); - cnst->usage = MIN(cnst->usage, elem->value * elem->variable->mu); - } - } - if (!cnst->shared) { - XBT_DEBUG("\tUpdate constraint %p (%g) by %g", - cnst, cnst->remaining, cnst->usage); - - double_update(&(cnst->remaining), cnst->usage); - } - - XBT_DEBUG("\tRemaining for %p : %g", cnst, cnst->remaining); - if (cnst->remaining == 0.0) { - XBT_DEBUG("\tGet rid of constraint %p", cnst); - - xbt_swag_remove(cnst, cnst_list); - xbt_swag_foreach(elem, elem_list) { - if (elem->variable->weight <= 0) - break; - if (elem->value > 0) { - XBT_DEBUG("\t\tGet rid of variable %p", elem->variable); - xbt_swag_remove(elem->variable, var_list); - } - } - } - } - } while (xbt_swag_size(var_list)); - - xbt_swag_reset(cnst_list); - sys->modified = 0; - if (XBT_LOG_ISENABLED(surf_maxmin, xbt_log_priority_debug)) { - XBT_DEBUG("Fair bottleneck done"); - lmm_print(sys); - } -}