vpr/SRC/base/SetupVPR.c

#include <assert.h>
#include <string.h>
#include "util.h"
#include "vpr_types.h"
#include "OptionTokens.h"
#include "ReadOptions.h"
#include "globals.h"
#include "read_xml_arch_file.h"
#include "SetupVPR.h"
#include "pb_type_graph.h"

static void SetupOperation(INP t_options Options,
			   OUTP enum e_operation *Operation);
static void SetupPackerOpts(INP t_options Options, 
							INP boolean TimingEnabled, 
							INP t_arch Arch, 
							INP char *net_file,
							OUTP struct s_packer_opts *PackerOpts);
static void SetupPlacerOpts(INP t_options Options,
			    INP boolean TimingEnabled,
			    OUTP struct s_placer_opts *PlacerOpts);
static void SetupAnnealSched(INP t_options Options,
			     OUTP struct s_annealing_sched *AnnealSched);
static void SetupRouterOpts(INP t_options Options,
			    INP boolean TimingEnabled,
			    OUTP struct s_router_opts *RouterOpts);
static void SetupRoutingArch(INP t_arch Arch,
			     OUTP struct s_det_routing_arch *RoutingArch);
static void SetupTiming(INP t_options Options,
			INP t_arch Arch,
			INP boolean TimingEnabled,
			INP enum e_operation Operation,
			INP struct s_placer_opts PlacerOpts,
			INP struct s_router_opts RouterOpts,
			OUTP t_timing_inf * Timing);
static void SetupSwitches(INP t_arch Arch,
			  INOUTP struct s_det_routing_arch *RoutingArch,
			  INP struct s_switch_inf *ArchSwitches,
			  INP int NumArchSwitches);

/* Sets VPR parameters and defaults. Does not do any error checking
 * as this should have been done by the various input checkers */
void
SetupVPR(INP t_options Options,
	 INP boolean TimingEnabled,
	 OUTP struct s_file_name_opts *FileNameOpts,
	 OUTP t_arch * Arch,
	 OUTP enum e_operation *Operation,
	 OUTP t_model ** user_models,
	 OUTP t_model ** library_models,
	 OUTP struct s_packer_opts *PackerOpts,
	 OUTP struct s_placer_opts *PlacerOpts,
	 OUTP struct s_annealing_sched *AnnealSched,
	 OUTP struct s_router_opts *RouterOpts,
	 OUTP struct s_det_routing_arch *RoutingArch,
	 OUTP t_segment_inf ** Segments,
	 OUTP t_timing_inf * Timing,
	 OUTP boolean * ShowGraphics,
	 OUTP int *GraphPause)
{
	int i, j, len;

	
	/* init default filenames */
	if(Options.BlifFile == NULL) {
		len = strlen(Options.CircuitName) + 6; /* circuit_name.blif/0*/
		if(Options.OutFilePrefix != NULL) {
			len += strlen(Options.OutFilePrefix);
		}
		Options.BlifFile = my_calloc(len,sizeof(char));
		if(Options.OutFilePrefix == NULL) {
			sprintf(Options.BlifFile, "%s.blif", Options.CircuitName);
		} else {
			sprintf(Options.BlifFile, "%s%s.blif", Options.OutFilePrefix, Options.CircuitName);
		}
	}
	
	if(Options.NetFile == NULL) {
		len = strlen(Options.CircuitName) + 5; /* circuit_name.net/0*/
		if(Options.OutFilePrefix != NULL) {
			len += strlen(Options.OutFilePrefix);
		}
		Options.NetFile = my_calloc(len,sizeof(char));
		if(Options.OutFilePrefix == NULL) {
			sprintf(Options.NetFile, "%s.net", Options.CircuitName);
		} else {
			sprintf(Options.NetFile, "%s%s.net", Options.OutFilePrefix, Options.CircuitName);
		}
	}

	if(Options.PlaceFile == NULL) {
		len = strlen(Options.CircuitName) + 7; /* circuit_name.place/0*/
		if(Options.OutFilePrefix != NULL) {
			len += strlen(Options.OutFilePrefix);
		}
		Options.PlaceFile = my_calloc(len,sizeof(char));
		if(Options.OutFilePrefix == NULL) {
			sprintf(Options.PlaceFile, "%s.place", Options.CircuitName);
		} else {
			sprintf(Options.PlaceFile, "%s%s.place", Options.OutFilePrefix, Options.CircuitName);
		}
	}

	if(Options.RouteFile == NULL) {
		len = strlen(Options.CircuitName) + 7; /* circuit_name.route/0*/
		if(Options.OutFilePrefix != NULL) {
			len += strlen(Options.OutFilePrefix);
		}
		Options.RouteFile = my_calloc(len,sizeof(char));
		if(Options.OutFilePrefix == NULL) {
			sprintf(Options.RouteFile, "%s.route", Options.CircuitName);
		} else {
			sprintf(Options.RouteFile, "%s%s.route", Options.OutFilePrefix, Options.CircuitName);
		}
	}

	FileNameOpts->CircuitName = Options.CircuitName;
	FileNameOpts->ArchFile = Options.ArchFile;
	FileNameOpts->BlifFile = Options.BlifFile;
	FileNameOpts->NetFile = Options.NetFile;
	FileNameOpts->PlaceFile = Options.PlaceFile;
	FileNameOpts->RouteFile = Options.RouteFile;	
	FileNameOpts->OutFilePrefix = Options.OutFilePrefix;	

    SetupOperation(Options, Operation);
    SetupPlacerOpts(Options, TimingEnabled, PlacerOpts);
    SetupAnnealSched(Options, AnnealSched);
    SetupRouterOpts(Options, TimingEnabled, RouterOpts);

    XmlReadArch(Options.ArchFile, TimingEnabled, Arch,
		&type_descriptors, &num_types);

	*user_models = Arch->models;
	*library_models = Arch->model_library;
	
	/* TODO: this is inelegant, I should be populating this information in XmlReadArch */
	EMPTY_TYPE = NULL;
	FILL_TYPE = NULL;
	IO_TYPE = NULL;
	for(i = 0; i < num_types; i++) {
		if(strcmp(type_descriptors[i].name, "<EMPTY>") == 0) {
			EMPTY_TYPE = &type_descriptors[i];
		} else if(strcmp(type_descriptors[i].name, "io") == 0) {
			IO_TYPE = &type_descriptors[i];
		} else {
			for(j = 0; j < type_descriptors[i].num_grid_loc_def; j++) {
				if(type_descriptors[i].grid_loc_def[j].grid_loc_type == FILL) {
					assert(FILL_TYPE == NULL);
					FILL_TYPE = &type_descriptors[i];
				}
			}
		}

	}
	assert(EMPTY_TYPE != NULL && FILL_TYPE != NULL && IO_TYPE != NULL);


    *Segments = Arch->Segments;
    RoutingArch->num_segment = Arch->num_segments;

    SetupSwitches(*Arch, RoutingArch, Arch->Switches, Arch->num_switches);
    SetupRoutingArch(*Arch, RoutingArch);
    SetupTiming(Options, *Arch, TimingEnabled, *Operation,
		*PlacerOpts, *RouterOpts, Timing);
	SetupPackerOpts(Options, TimingEnabled, *Arch, Options.NetFile, PackerOpts);

    /* init global variables */
	OutFilePrefix = Options.OutFilePrefix;
    grid_logic_tile_area = Arch->grid_logic_tile_area;
    ipin_mux_trans_size = Arch->ipin_mux_trans_size;


    /* Set seed for pseudo-random placement, default seed to 1 */
    PlacerOpts->seed = 1;
    if(Options.Count[OT_SEED])
	{
	    PlacerOpts->seed = Options.Seed;
	}
    my_srandom(PlacerOpts->seed);

	
	printf("Building complex block graph \n");
	alloc_and_load_all_pb_graphs();
	#ifdef DUMP_PB_GRAPH
		echo_pb_graph("pb_graph.echo");
	#endif


    *GraphPause = 1;		/* DEFAULT */
    if(Options.Count[OT_AUTO])
	{
	    *GraphPause = Options.GraphPause;
	}
#ifdef NO_GRAPHICS
    *ShowGraphics = FALSE;	/* DEFAULT */
#else /* NO_GRAPHICS */
    *ShowGraphics = TRUE;	/* DEFAULT */
    if(Options.Count[OT_NODISP])
	{
	    *ShowGraphics = FALSE;
	}
#endif /* NO_GRAPHICS */

#ifdef CREATE_ECHO_FILES
    EchoArch("arch.echo", type_descriptors, num_types, Arch);
#endif
	
}

static void
SetupTiming(INP t_options Options,
	    INP t_arch Arch,
	    INP boolean TimingEnabled,
	    INP enum e_operation Operation,
	    INP struct s_placer_opts PlacerOpts,
	    INP struct s_router_opts RouterOpts,
	    OUTP t_timing_inf * Timing)
{

    /* Don't do anything if they don't want timing */
    if(FALSE == TimingEnabled)
	{
	    memset(Timing, 0, sizeof(t_timing_inf));
	    Timing->timing_analysis_enabled = FALSE;
	    return;
	}

    Timing->C_ipin_cblock = Arch.C_ipin_cblock;
    Timing->T_ipin_cblock = Arch.T_ipin_cblock;
    Timing->timing_analysis_enabled = TimingEnabled;
}


/* This loads up VPR's switch_inf data by combining the switches from 
 * the arch file with the special switches that VPR needs. */
static void
SetupSwitches(INP t_arch Arch,
	      INOUTP struct s_det_routing_arch *RoutingArch,
	      INP struct s_switch_inf *ArchSwitches,
	      INP int NumArchSwitches)
{

    RoutingArch->num_switch = NumArchSwitches;

    /* Depends on RoutingArch->num_switch */
    RoutingArch->wire_to_ipin_switch = RoutingArch->num_switch;
    ++RoutingArch->num_switch;

    /* Depends on RoutingArch->num_switch */
    RoutingArch->delayless_switch = RoutingArch->num_switch;
    RoutingArch->global_route_switch = RoutingArch->delayless_switch;
    ++RoutingArch->num_switch;

    /* Alloc the list now that we know the final num_switch value */
    switch_inf =
	(struct s_switch_inf *)my_malloc(sizeof(struct s_switch_inf) *
					 RoutingArch->num_switch);

    /* Copy the switch data from architecture file */
    memcpy(switch_inf, ArchSwitches,
	   sizeof(struct s_switch_inf) * NumArchSwitches);

    /* Delayless switch for connecting sinks and sources with their pins. */
    switch_inf[RoutingArch->delayless_switch].buffered = TRUE;
    switch_inf[RoutingArch->delayless_switch].R = 0.;
    switch_inf[RoutingArch->delayless_switch].Cin = 0.;
    switch_inf[RoutingArch->delayless_switch].Cout = 0.;
    switch_inf[RoutingArch->delayless_switch].Tdel = 0.;

    /* The wire to ipin switch for all types. Curently all types
     * must share ipin switch. Some of the timing code would
     * need to be changed otherwise. */
    switch_inf[RoutingArch->wire_to_ipin_switch].buffered = TRUE;
    switch_inf[RoutingArch->wire_to_ipin_switch].R = 0.;
    switch_inf[RoutingArch->wire_to_ipin_switch].Cin = Arch.C_ipin_cblock;
    switch_inf[RoutingArch->wire_to_ipin_switch].Cout = 0.;
    switch_inf[RoutingArch->wire_to_ipin_switch].Tdel = Arch.T_ipin_cblock;
}


/* Sets up routing structures. Since checks are already done, this
 * just copies values across */
static void
SetupRoutingArch(INP t_arch Arch,
		 OUTP struct s_det_routing_arch *RoutingArch)
{

    RoutingArch->switch_block_type = Arch.SBType;
    RoutingArch->R_minW_nmos = Arch.R_minW_nmos;
    RoutingArch->R_minW_pmos = Arch.R_minW_pmos;
    RoutingArch->Fs = Arch.Fs;
    RoutingArch->directionality = BI_DIRECTIONAL;
    if(Arch.Segments)
	RoutingArch->directionality = Arch.Segments[0].directionality;
}


static void
SetupRouterOpts(INP t_options Options,
		INP boolean TimingEnabled,
		OUTP struct s_router_opts *RouterOpts)
{
	RouterOpts->astar_fac = 1.2;	/* DEFAULT */
	if(Options.Count[OT_ASTAR_FAC])
	{
	    RouterOpts->astar_fac = Options.astar_fac;
	}

    RouterOpts->bb_factor = 3;	/* DEFAULT */
	if(Options.Count[OT_FAST])
	{
		RouterOpts->bb_factor = 0;	/* DEFAULT */
	}
	if(Options.Count[OT_BB_FACTOR])
	{
	    RouterOpts->bb_factor = Options.bb_factor;
	}

    RouterOpts->criticality_exp = 1.0;	/* DEFAULT */
	if(Options.Count[OT_CRITICALITY_EXP])
	{
	    RouterOpts->criticality_exp = Options.criticality_exp;
	}

    RouterOpts->max_criticality = 0.99;	/* DEFAULT */
	if(Options.Count[OT_MAX_CRITICALITY])
	{
	    RouterOpts->max_criticality = Options.max_criticality;
	}

    RouterOpts->max_router_iterations = 50;	/* DEFAULT */
	if(Options.Count[OT_FAST])
	{
	    RouterOpts->max_router_iterations = 10;
	}
	if(Options.Count[OT_MAX_ROUTER_ITERATIONS])
	{
	    RouterOpts->max_router_iterations = Options.max_router_iterations;
	}

    RouterOpts->pres_fac_mult = 1.3;	/* DEFAULT */
	if(Options.Count[OT_PRES_FAC_MULT])
	{
	    RouterOpts->pres_fac_mult = Options.pres_fac_mult;
	}


    RouterOpts->route_type = DETAILED;	/* DEFAULT */
    if(Options.Count[OT_ROUTE_TYPE])
	{
	    RouterOpts->route_type = Options.RouteType;
	}

	RouterOpts->full_stats = FALSE; /* DEFAULT */
	if(Options.Count[OT_FULL_STATS])
	{
	    RouterOpts->full_stats = TRUE;
	}

	RouterOpts->verify_binary_search = FALSE; /* DEFAULT */
	if(Options.Count[OT_VERIFY_BINARY_SEARCH])
	{
	    RouterOpts->verify_binary_search = TRUE;
	}

    /* Depends on RouteOpts->route_type */
    RouterOpts->router_algorithm = DIRECTED_SEARCH;	/* DEFAULT */
    if(TimingEnabled)
	{
	    RouterOpts->router_algorithm = TIMING_DRIVEN;	/* DEFAULT */
	}
    if(GLOBAL == RouterOpts->route_type)
	{
	    RouterOpts->router_algorithm = DIRECTED_SEARCH;	/* DEFAULT */
	}
    if(Options.Count[OT_ROUTER_ALGORITHM])
	{
	    RouterOpts->router_algorithm = Options.RouterAlgorithm;
	}

    RouterOpts->fixed_channel_width = NO_FIXED_CHANNEL_WIDTH;	/* DEFAULT */
    if(Options.Count[OT_ROUTE_CHAN_WIDTH])
	{
	    RouterOpts->fixed_channel_width = Options.RouteChanWidth;
	}

    /* Depends on RouterOpts->router_algorithm */
    RouterOpts->initial_pres_fac = 0.5;	/* DEFAULT */
    if(DIRECTED_SEARCH == RouterOpts->router_algorithm || 
		Options.Count[OT_FAST])
	{
	    RouterOpts->initial_pres_fac = 10000.0;	/* DEFAULT */
	}
    if(Options.Count[OT_INITIAL_PRES_FAC])
	{
	    RouterOpts->initial_pres_fac = Options.initial_pres_fac;
	}

    /* Depends on RouterOpts->router_algorithm */
    RouterOpts->base_cost_type = DELAY_NORMALIZED;	/* DEFAULT */
    if(BREADTH_FIRST == RouterOpts->router_algorithm)
	{
	    RouterOpts->base_cost_type = DEMAND_ONLY;	/* DEFAULT */
	}
    if(DIRECTED_SEARCH == RouterOpts->router_algorithm)
	{
	    RouterOpts->base_cost_type = DEMAND_ONLY;	/* DEFAULT */
	}
	if(Options.Count[OT_BASE_COST_TYPE])
	{
	    RouterOpts->base_cost_type = Options.base_cost_type;
	}

    /* Depends on RouterOpts->router_algorithm */
    RouterOpts->first_iter_pres_fac = 0.5;	/* DEFAULT */
    if(BREADTH_FIRST == RouterOpts->router_algorithm)
	{
	    RouterOpts->first_iter_pres_fac = 0.0;	/* DEFAULT */
	}
    if(DIRECTED_SEARCH == RouterOpts->router_algorithm ||
		Options.Count[OT_FAST])
	{
	    RouterOpts->first_iter_pres_fac = 10000.0;	/* DEFAULT */
	}
	if(Options.Count[OT_FIRST_ITER_PRES_FAC])
	{
	    RouterOpts->first_iter_pres_fac = Options.first_iter_pres_fac;
	}

    /* Depends on RouterOpts->router_algorithm */
    RouterOpts->acc_fac = 1.0;
    if(BREADTH_FIRST == RouterOpts->router_algorithm)
	{
	    RouterOpts->acc_fac = 0.2;
	}
	if(Options.Count[OT_ACC_FAC])
	{
	    RouterOpts->acc_fac = Options.acc_fac;
	}

    /* Depends on RouterOpts->route_type */
    RouterOpts->bend_cost = 0.0;	/* DEFAULT */
    if(GLOBAL == RouterOpts->route_type)
	{
	    RouterOpts->bend_cost = 1.0;	/* DEFAULT */
	}
	if(Options.Count[OT_BEND_COST])
	{
	    RouterOpts->bend_cost = Options.bend_cost;
	}

	RouterOpts->doRouting = FALSE;
	if(Options.Count[OT_ROUTE])
	{
	    RouterOpts->doRouting = TRUE;
	} else if (!Options.Count[OT_PACK] && !Options.Count[OT_PLACE] && !Options.Count[OT_ROUTE]) {
		if(!Options.Count[OT_TIMING_ANALYZE_ONLY_WITH_NET_DELAY])
			RouterOpts->doRouting = TRUE;
	}
    
}


static void
SetupAnnealSched(INP t_options Options,
		 OUTP struct s_annealing_sched *AnnealSched)
{
    AnnealSched->alpha_t = 0.8;	/* DEFAULT */
    if(Options.Count[OT_ALPHA_T])
	{
	    AnnealSched->alpha_t = Options.PlaceAlphaT;
	}
    if(AnnealSched->alpha_t >= 1 || AnnealSched->alpha_t <= 0)
	{
	    printf(ERRTAG "alpha_t must be between 0 and 1 exclusive\n");
	    exit(1);
	}
    AnnealSched->exit_t = 0.01;	/* DEFAULT */
    if(Options.Count[OT_EXIT_T])
	{
	    AnnealSched->exit_t = Options.PlaceExitT;
	}
    if(AnnealSched->exit_t <= 0)
	{
	    printf(ERRTAG "exit_t must be greater than 0\n");
	    exit(1);
	}
    AnnealSched->init_t = 100.0;	/* DEFAULT */
    if(Options.Count[OT_INIT_T])
	{
	    AnnealSched->init_t = Options.PlaceInitT;
	}
    if(AnnealSched->init_t <= 0)
	{
	    printf(ERRTAG "init_t must be greater than 0\n");
	    exit(1);
	}
    if(AnnealSched->init_t < AnnealSched->exit_t)
	{
	    printf(ERRTAG "init_t must be greater or equal to than exit_t\n");
	    exit(1);
	}
    AnnealSched->inner_num = 10.0;	/* DEFAULT */
	if(Options.Count[OT_FAST]) {
		AnnealSched->inner_num = 1.0;	/* DEFAULT for fast*/
	}
    if(Options.Count[OT_INNER_NUM])
	{
	    AnnealSched->inner_num = Options.PlaceInnerNum;
	}
    if(AnnealSched->inner_num <= 0)
	{
	    printf(ERRTAG "init_t must be greater than 0\n");
	    exit(1);
	}
    AnnealSched->type = AUTO_SCHED;	/* DEFAULT */
    if((Options.Count[OT_ALPHA_T]) ||
       (Options.Count[OT_EXIT_T]) || (Options.Count[OT_INIT_T]))
	{
	    AnnealSched->type = USER_SCHED;
	}
}

/* Sets up the s_packer_opts structure baesd on users inputs and on the architecture specified.  
 * Error checking, such as checking for conflicting params is assumed to be done beforehand 
 */
void SetupPackerOpts(INP t_options Options, 
							INP boolean TimingEnabled, 
							INP t_arch Arch, 
							INP char *net_file,
							OUTP struct s_packer_opts *PackerOpts) {

	if(Arch.clb_grid.IsAuto) {
		PackerOpts->aspect = Arch.clb_grid.Aspect;
	} else {
		PackerOpts->aspect = (float)Arch.clb_grid.H / (float)Arch.clb_grid.W;
	}
	PackerOpts->output_file = net_file;

	PackerOpts->hack_no_legal_frac_lut = FALSE; /* DEFAULT */
	if(Options.Count[OT_HACK_NO_LEGAL_FRAC_LUT])
	{
		PackerOpts->hack_no_legal_frac_lut = TRUE;
	}

	PackerOpts->hack_safe_latch = FALSE; /* DEFAULT */
	if(Options.Count[OT_HACK_SAFE_LATCH])
	{
		PackerOpts->hack_safe_latch = TRUE;
	}

	PackerOpts->blif_file_name = Options.BlifFile; 
	
	PackerOpts->doPacking = FALSE; /* DEFAULT */
	if(Options.Count[OT_PACK])
	{
		PackerOpts->doPacking = TRUE;
	} else if (!Options.Count[OT_PACK] && !Options.Count[OT_PLACE] && !Options.Count[OT_ROUTE]) {
		if(!Options.Count[OT_TIMING_ANALYZE_ONLY_WITH_NET_DELAY])
			PackerOpts->doPacking = TRUE;
	}
	
	PackerOpts->global_clocks = TRUE; /* DEFAULT */
	if(Options.Count[OT_GLOBAL_CLOCKS])
	{
		PackerOpts->global_clocks = Options.global_clocks;
	}

	PackerOpts->hill_climbing_flag = FALSE; /* DEFAULT */
	if(Options.Count[OT_HILL_CLIMBING_FLAG])
	{
		PackerOpts->hill_climbing_flag = Options.hill_climbing_flag;
	}

	PackerOpts->sweep_hanging_nets_and_inputs = TRUE;
	if(Options.Count[OT_SWEEP_HANGING_NETS_AND_INPUTS])
	{
		PackerOpts->sweep_hanging_nets_and_inputs = Options.sweep_hanging_nets_and_inputs;
	}

	PackerOpts->skip_clustering = FALSE; /* DEFAULT */
	if(Options.Count[OT_SKIP_CLUSTERING])
	{
		PackerOpts->skip_clustering = TRUE;
	}
	PackerOpts->allow_unrelated_clustering = TRUE; /* DEFAULT */
	if(Options.Count[OT_ALLOW_UNRELATED_CLUSTERING])
	{
		PackerOpts->allow_unrelated_clustering = Options.allow_unrelated_clustering;
	}
	PackerOpts->allow_early_exit = FALSE; /* DEFAULT */
	if(Options.Count[OT_ALLOW_EARLY_EXIT])
	{
		PackerOpts->allow_early_exit = Options.allow_early_exit;
	}
	PackerOpts->connection_driven = TRUE; /* DEFAULT */
	if(Options.Count[OT_CONNECTION_DRIVEN_CLUSTERING])
	{
		PackerOpts->connection_driven = Options.connection_driven;
	}

	PackerOpts->timing_driven = TimingEnabled; /* DEFAULT */
	if(Options.Count[OT_TIMING_DRIVEN_CLUSTERING])
	{
		PackerOpts->timing_driven = Options.timing_driven;
	}
	PackerOpts->cluster_seed_type = (TimingEnabled ? VPACK_TIMING : VPACK_MAX_INPUTS); /* DEFAULT */
	if(Options.Count[OT_CLUSTER_SEED])
	{
		PackerOpts->cluster_seed_type = Options.cluster_seed_type;
	}
	PackerOpts->alpha=0.75; /* DEFAULT */
	if(Options.Count[OT_ALPHA_CLUSTERING])
	{
		PackerOpts->alpha= Options.alpha;
	}
	PackerOpts->beta=0.9; /* DEFAULT */
	if(Options.Count[OT_BETA_CLUSTERING])
	{
		PackerOpts->beta= Options.beta;
	}

	/* never recomputer timing */
	PackerOpts->recompute_timing_after = MAX_SHORT; /* DEFAULT */
	if(Options.Count[OT_RECOMPUTE_TIMING_AFTER])
	{
		PackerOpts->recompute_timing_after = Options.recompute_timing_after;
	}
	PackerOpts->block_delay = 0; /* DEFAULT */
	if(Options.Count[OT_CLUSTER_BLOCK_DELAY])
	{
		PackerOpts->block_delay = Options.block_delay;
	}
	PackerOpts->intra_cluster_net_delay = 0; /* DEFAULT */
	if(Options.Count[OT_INTRA_CLUSTER_NET_DELAY])
	{
		PackerOpts->intra_cluster_net_delay = Options.intra_cluster_net_delay;
	}
	PackerOpts->inter_cluster_net_delay = 1.0; /* DEFAULT */
	if(Options.Count[OT_INTER_CLUSTER_NET_DELAY])
	{
		PackerOpts->inter_cluster_net_delay = Options.inter_cluster_net_delay;
	}

	PackerOpts->packer_algorithm = PACK_GREEDY; /* DEFAULT */
	if(Options.Count[OT_PACKER_ALGORITHM])
	{
		PackerOpts->packer_algorithm = Options.packer_algorithm;
	}
}

/* Sets up the s_placer_opts structure based on users input. Error checking,
 * such as checking for conflicting params is assumed to be done beforehand */
static void
SetupPlacerOpts(INP t_options Options,
		INP boolean TimingEnabled,
		OUTP struct s_placer_opts *PlacerOpts)
{
    PlacerOpts->block_dist = 1;	/* DEFAULT */
    if(Options.Count[OT_BLOCK_DIST])
	{
	    PlacerOpts->block_dist = Options.block_dist;
	}

    PlacerOpts->inner_loop_recompute_divider = 0;	/* DEFAULT */
    if(Options.Count[OT_INNER_LOOP_RECOMPUTE_DIVIDER])
	{
	    PlacerOpts->inner_loop_recompute_divider = Options.inner_loop_recompute_divider;
	}

    PlacerOpts->place_cost_exp = 1.0;	/* DEFAULT */
    if(Options.Count[OT_PLACE_COST_EXP])
	{
	    PlacerOpts->place_cost_exp = Options.place_cost_exp;
	}

    PlacerOpts->td_place_exp_first = 1;	/* DEFAULT */
    if(Options.Count[OT_TD_PLACE_EXP_FIRST])
	{
	    PlacerOpts->td_place_exp_first = Options.place_exp_first;
	}

    PlacerOpts->td_place_exp_last = 8;	/* DEFAULT */
    if(Options.Count[OT_TD_PLACE_EXP_LAST])
	{
	    PlacerOpts->td_place_exp_last = Options.place_exp_last;
	}

    PlacerOpts->place_cost_type = LINEAR_CONG;	/* DEFAULT */
    if(Options.Count[OT_PLACE_COST_TYPE])
	{
	    PlacerOpts->place_cost_type = Options.PlaceCostType;
	}

    /* Depends on PlacerOpts->place_cost_type */
    PlacerOpts->place_algorithm = BOUNDING_BOX_PLACE;	/* DEFAULT */
    if(TimingEnabled)
	{
	    PlacerOpts->place_algorithm = PATH_TIMING_DRIVEN_PLACE;	/* DEFAULT */
	}
    if(NONLINEAR_CONG == PlacerOpts->place_cost_type)
	{
	    PlacerOpts->place_algorithm = BOUNDING_BOX_PLACE;	/* DEFAULT */
	}
    if(Options.Count[OT_PLACE_ALGORITHM])
	{
	    PlacerOpts->place_algorithm = Options.PlaceAlgorithm;
	}

    PlacerOpts->num_regions = 4;	/* DEFAULT */
    if(Options.Count[OT_NUM_REGIONS])
	{
	    PlacerOpts->num_regions = Options.PlaceNonlinearRegions;
	}

    PlacerOpts->pad_loc_file = NULL;	/* DEFAULT */
    if(Options.Count[OT_FIX_PINS])
	{
	    if(Options.PinFile)
		{
		    PlacerOpts->pad_loc_file = my_strdup(Options.PinFile);
		}
	}

    PlacerOpts->pad_loc_type = FREE;	/* DEFAULT */
    if(Options.Count[OT_FIX_PINS])
	{
	    PlacerOpts->pad_loc_type = (Options.PinFile ? USER : RANDOM);
	}

    /* Depends on PlacerOpts->place_cost_type */
    PlacerOpts->place_chan_width = 100;	/* DEFAULT */
    if((NONLINEAR_CONG == PlacerOpts->place_cost_type) &&
       (Options.Count[OT_ROUTE_CHAN_WIDTH]))
	{
	    PlacerOpts->place_chan_width = Options.RouteChanWidth;
	}
    if(Options.Count[OT_PLACE_CHAN_WIDTH])
	{
	    PlacerOpts->place_chan_width = Options.PlaceChanWidth;
	}

    PlacerOpts->recompute_crit_iter = 1;	/* DEFAULT */
    if(Options.Count[OT_RECOMPUTE_CRIT_ITER])
	{
	    PlacerOpts->recompute_crit_iter = Options.RecomputeCritIter;
	}

    PlacerOpts->timing_tradeoff = 0.5;	/* DEFAULT */
    if(Options.Count[OT_TIMING_TRADEOFF])
	{
	    PlacerOpts->timing_tradeoff = Options.PlaceTimingTradeoff;
	}

    /* Depends on PlacerOpts->place_algorithm */
    PlacerOpts->enable_timing_computations = FALSE;	/* DEFAULT */
    if((PlacerOpts->place_algorithm == PATH_TIMING_DRIVEN_PLACE) ||
       (PlacerOpts->place_algorithm == NET_TIMING_DRIVEN_PLACE))
	{
	    PlacerOpts->enable_timing_computations = TRUE;	/* DEFAULT */
	}
    if(Options.Count[OT_ENABLE_TIMING_COMPUTATIONS])
	{
	    PlacerOpts->enable_timing_computations = Options.ShowPlaceTiming;
	}

    /* Depends on PlacerOpts->place_cost_type */
    PlacerOpts->place_freq = PLACE_ONCE;	/* DEFAULT */
    if(NONLINEAR_CONG == PlacerOpts->place_cost_type)
	{
	    PlacerOpts->place_freq = PLACE_ALWAYS;	/* DEFAULT */
	}
    if((Options.Count[OT_ROUTE_CHAN_WIDTH]) ||
       (Options.Count[OT_PLACE_CHAN_WIDTH]))
	{
	    PlacerOpts->place_freq = PLACE_ONCE;
	}

	PlacerOpts->doPlacement = FALSE; /* DEFAULT */
	if(Options.Count[OT_PLACE])
	{
		PlacerOpts->doPlacement = TRUE;
	} else if (!Options.Count[OT_PACK] && !Options.Count[OT_PLACE] && !Options.Count[OT_ROUTE]) {
		if(!Options.Count[OT_TIMING_ANALYZE_ONLY_WITH_NET_DELAY])
			PlacerOpts->doPlacement = TRUE;
	}
	if(PlacerOpts->doPlacement == FALSE) {
		PlacerOpts->place_freq = PLACE_NEVER;
	}
	
}


static void
SetupOperation(INP t_options Options,
	       OUTP enum e_operation *Operation)
{
    *Operation = RUN_FLOW;	/* DEFAULT */
    if(Options.Count[OT_TIMING_ANALYZE_ONLY_WITH_NET_DELAY])
	{
	    *Operation = TIMING_ANALYSIS_ONLY;
	}
}


/* Determines whether timing analysis should be on or off. 
   Unless otherwise specified, always default to timing.
*/
boolean
IsTimingEnabled(INP t_options Options)
{
    /* First priority to the '--timing_analysis' flag */
    if(Options.Count[OT_TIMING_ANALYSIS])
	{
	    return Options.TimingAnalysis;
	}
    return TRUE;
}