super.h File Reference

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Functions
ABC_NAMESPACE_HEADER_START void	Super2_Precompute (int nInputs, int nLevels, int fVerbose)
	INCLUDES ///.
Vec_Str_t *	Super_PrecomputeStr (Mio_Library_t *pLibGen, int nVarsMax, int nLevels, int nGatesMax, float tDelayMax, float tAreaMax, int TimeLimit, int fSkipInv, int fVerbose)
void	Super_Precompute (Mio_Library_t *pLibGen, int nVarsMax, int nLevels, int nGatesMax, float tDelayMax, float tAreaMax, int TimeLimit, int fSkipInv, int fVerbose, char *pFileName)
	FUNCTION DEFINITIONS ///.

Function Documentation

Super2_Precompute()

ABC_NAMESPACE_HEADER_START void Super2_Precompute ( int nInputs, int nLevels, int fVerbose )

extern

INCLUDES ///.

CFile****************************************************************

FileName [super.h]

PackageName [MVSIS 2.0: Multi-valued logic synthesis system.]

Synopsis [Pre-computation of supergates (delay-limited gate combinations).]

Author [MVSIS Group]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - September 8, 2003.]

Revision [

Id

super.h,v 1.3 2004/06/28 14:20:25 alanmi Exp

] PARAMETERS /// STRUCTURE DEFINITIONS /// GLOBAL VARIABLES /// MACRO DEFINITIONS /// FUNCTION DEFINITIONS ///

INCLUDES ///.

Function*************************************************************

Synopsis [Precomputes the library of AND2 gates.]

Description []

SideEffects []

SeeAlso []

Definition at line 113 of file superAnd.c.

{
    Super2_Man_t * pMan;
    Super2_Lib_t * pLibCur, * pLibNext;
    int Level;
    abctime clk;
 
    assert( nInputs < 6 );
 
    // start the manager
    pMan = Super2_ManStart();
 
    // get the starting supergates
    pLibCur = Super2_LibFirst( pMan, nInputs );
 
    // perform the computation of supergates
printf( "Computing supergates for %d inputs and %d levels:\n", nInputs, nLevels );
    for ( Level = 1; Level <= nLevels; Level++ )
    {
clk = Abc_Clock();
        pLibNext = Super2_LibCompute( pMan, pLibCur );
        pLibNext->nLevels = Level;
        Super2_LibStop( pLibCur );
        pLibCur = pLibNext;
printf( "Level %d:  Tried = %7d.  Computed = %7d.  ", Level, pMan->nTried, pLibCur->nGates );
ABC_PRT( "Runtime", Abc_Clock() - clk );
fflush( stdout );
    }
 
printf( "Writing the output file...\n" );
fflush( stdout );
    // write them into a file
    Super2_LibWrite( pLibCur );
    Super2_LibStop( pLibCur );
 
    // stop the manager
    Super2_ManStop( pMan );
}

Super_Precompute()

void Super_Precompute ( Mio_Library_t * pLibGen, int nVarsMax, int nLevels, int nGatesMax, float tDelayMax, float tAreaMax, int TimeLimit, int fSkipInv, int fVerbose, char * pFileName )

extern

FUNCTION DEFINITIONS ///.

Function*************************************************************

Synopsis [Precomputes the library of supergates.]

Description []

SideEffects []

SeeAlso []

Definition at line 140 of file superGate.c.

{
    Vec_Str_t * vStr;
    FILE * pFile = fopen( pFileName, "wb" );
    if ( pFile == NULL )
    {     
        printf( "Cannot open output file \"%s\".\n", pFileName );
        return;
    }
    vStr = Super_PrecomputeStr( pLibGen, nVarsMax, nLevels, nGatesMax, tDelayMax, tAreaMax, TimeLimit, fSkipInv, fVerbose );
    if ( vStr ) 
    {
        fwrite( Vec_StrArray(vStr), 1, Vec_StrSize(vStr), pFile );
        Vec_StrFree( vStr );
    }
    fclose( pFile );
    // report the result of writing
    if ( fVerbose )
    {
        printf( "The supergates are written using new format \"%s\" ", pFileName );
        printf( "(%0.3f MB).\n", ((double)Extra_FileSize(pFileName))/(1<<20) );
    }
}

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Super_PrecomputeStr()

Vec_Str_t * Super_PrecomputeStr ( Mio_Library_t * pLibGen, int nVarsMax, int nLevels, int nGatesMax, float tDelayMax, float tAreaMax, int TimeLimit, int fSkipInv, int fVerbose )

extern

Function*************************************************************

Synopsis [Precomputes the library of supergates.]

Description []

SideEffects []

SeeAlso []

Definition at line 175 of file superGate.c.

{
    Vec_Str_t * vStr;
    Super_Man_t * pMan;
    Mio_Gate_t ** ppGates;
    int nGates, Level;
    abctime clk, clockStart;
 
    assert( nVarsMax < 7 );
    if ( nGatesMax && nGatesMax < nVarsMax )
    {
        fprintf( stderr, "Erro! The number of supergates requested (%d) in less than the number of variables (%d).\n", nGatesMax, nVarsMax );
        fprintf( stderr, "The library cannot be computed.\n" );
        return NULL;
    }
 
    // get the root gates
    ppGates = Mio_CollectRoots( pLibGen, nVarsMax, tDelayMax, 0, &nGates, fVerbose );
    if ( nGatesMax && nGates >= nGatesMax )
    {
        fprintf( stdout, "Warning! Genlib library contains more gates than can be computed.\n");
        fprintf( stdout, "Only one-gate supergates are included in the supergate library.\n" );
    }
 
    // start the manager
    pMan = Super_ManStart();
    pMan->pName     = Mio_LibraryReadName(pLibGen);
    pMan->nGatesMax = nGatesMax;
    pMan->fSkipInv  = fSkipInv;
    pMan->tDelayMax = tDelayMax;
    pMan->tAreaMax  = tAreaMax;
    pMan->TimeLimit = TimeLimit; // in seconds
    pMan->TimeStop  = TimeLimit ? TimeLimit * CLOCKS_PER_SEC + Abc_Clock() : 0; // in CPU ticks
    pMan->fVerbose  = fVerbose;
 
    if ( nGates == 0 )
    {
        fprintf( stderr, "Error: No genlib gates satisfy the limits criteria. Stop.\n");
        fprintf( stderr, "Limits: max delay =  %.2f, max area =  %.2f, time limit = %d sec.\n", 
            pMan->tDelayMax, pMan->tAreaMax, pMan->TimeLimit );
 
        // stop the manager
        Super_ManStop( pMan );
        ABC_FREE( ppGates );
 
        return NULL;
    }
 
    // get the starting supergates
    Super_First( pMan, nVarsMax );
 
    // perform the computation of supergates
    clockStart = Abc_Clock();
if ( fVerbose )
{
    printf( "Computing supergates with %d inputs, %d levels, and %d max gates.\n", 
        pMan->nVarsMax, nLevels, nGatesMax );
    printf( "Limits: max delay =  %.2f, max area =  %.2f, time limit = %d sec.\n", 
        pMan->tDelayMax, pMan->tAreaMax, pMan->TimeLimit );
}
 
    for ( Level = 1; Level <= nLevels; Level++ )
    {
        if ( pMan->TimeStop && Abc_Clock() > pMan->TimeStop )
            break;
clk = Abc_Clock();
        Super_Compute( pMan, ppGates, nGates, nGatesMax, fSkipInv );
        pMan->nLevels = Level;
if ( fVerbose )
{
        printf( "Lev %d: Try =%12d. Add =%6d. Rem =%5d. Save =%6d. Lookups =%12d. Aliases =%12d. ",
           Level, pMan->nTried, pMan->nAdded, pMan->nRemoved, pMan->nAdded - pMan->nRemoved, pMan->nLookups, pMan->nAliases );
ABC_PRT( "Time", Abc_Clock() - clk );
fflush( stdout );
}
    }
    pMan->Time = Abc_Clock() - clockStart;
 
if ( fVerbose )
{
printf( "Writing the output file...\n" );
fflush( stdout );
}
    // write them into a file
    vStr = Super_Write( pMan );
 
    // stop the manager
    Super_ManStop( pMan );
    ABC_FREE( ppGates );
    return vStr;
}

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