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Classes
struct	magma_timestr_s

Typedefs
typedef struct magma_timestr_s	magma_timestr_t

Functions
int	magma_get_spotrf_nb (int m)
int	magma_get_sgeqrf_nb (int m)
int	magma_get_sgeqlf_nb (int m)
int	magma_get_sgetrf_nb (int m)
int	magma_get_sgetri_nb (int m)
int	magma_get_sgehrd_nb (int m)
int	magma_get_ssytrd_nb (int m)
int	magma_get_sgelqf_nb (int m)
int	magma_get_sgebrd_nb (int m)
int	magma_get_ssygst_nb (int m)
int	magma_get_dpotrf_nb (int m)
int	magma_get_dgeqrf_nb (int m)
int	magma_get_dgeqlf_nb (int m)
int	magma_get_dgetrf_nb (int m)
int	magma_get_dgetri_nb (int m)
int	magma_get_dgehrd_nb (int m)
int	magma_get_dsytrd_nb (int m)
int	magma_get_dgelqf_nb (int m)
int	magma_get_dgebrd_nb (int m)
int	magma_get_dsygst_nb (int m)
int	magma_get_cpotrf_nb (int m)
int	magma_get_cgetrf_nb (int m)
int	magma_get_cgetri_nb (int m)
int	magma_get_cgeqrf_nb (int m)
int	magma_get_cgeqlf_nb (int m)
int	magma_get_cgehrd_nb (int m)
int	magma_get_chetrd_nb (int m)
int	magma_get_cgelqf_nb (int m)
int	magma_get_cgebrd_nb (int m)
int	magma_get_chegst_nb (int m)
int	magma_get_zpotrf_nb (int m)
int	magma_get_zgetrf_nb (int m)
int	magma_get_zgetri_nb (int m)
int	magma_get_zgeqrf_nb (int m)
int	magma_get_zgeqlf_nb (int m)
int	magma_get_zgehrd_nb (int m)
int	magma_get_zhetrd_nb (int m)
int	magma_get_zgelqf_nb (int m)
int	magma_get_zgebrd_nb (int m)
int	magma_get_zhegst_nb (int m)
magma_timestr_t	get_current_time (void)
double	GetTimerValue (magma_timestr_t time_1, magma_timestr_t time_2)
double	magma_wtime (void)
void	printout_devices ()
void	swp2pswp (char trans, int n, int ipiv, int newipiv)
float	getv (float *da)
size_t	magma_strlcpy (char dst, const char src, size_t siz)
int	magma_num_gpus (void)

Typedef Documentation

typedef struct magma_timestr_s magma_timestr_t

Function Documentation

magma_timestr_t get_current_time ( void )

Definition at line 76 of file timer.cpp.

{
    struct timeval  time_val;
    magma_timestr_t time;
    
    cudaDeviceSynchronize();
    gettimeofday(&time_val, NULL);
    
    time.sec  = time_val.tv_sec;
    time.usec = time_val.tv_usec;
    return (time);
}

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double GetTimerValue	(	magma_timestr_t	time_1,
		magma_timestr_t	time_2
	)

Definition at line 94 of file timer.cpp.

References magma_timestr_s::sec, and magma_timestr_s::usec.

{
    int sec, usec;
    
    sec  = end.sec  - start.sec;
    usec = end.usec - start.usec;
    
    return (1000.*(double)(sec) + (double)(usec) * 0.001);
}

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float getv ( float * da )

Definition at line 161 of file auxiliary.cpp.

                     {
  float res[1];
  cublasGetVector(1, sizeof(float), da, 1, res, 1);
  return res[0];
}

int magma_get_cgebrd_nb ( int m )

Definition at line 271 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_cgehrd_nb ( int m )

Definition at line 215 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 32;
    else
        return 64;
}

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int magma_get_cgelqf_nb ( int m )

Definition at line 144 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_cgeqlf_nb ( int m )

Definition at line 108 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_cgeqrf_nb ( int m )

Definition at line 67 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_cgetrf_nb ( int m )

Definition at line 182 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 64;
    else
        return 128;
}

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int magma_get_cgetri_nb ( int m )

Definition at line 318 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_chegst_nb ( int m )

Definition at line 295 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_chetrd_nb ( int m )

Definition at line 246 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_cpotrf_nb ( int m )

Definition at line 36 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_dgebrd_nb ( int m )

Definition at line 266 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_dgehrd_nb ( int m )

Definition at line 207 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else
        return 64;
}

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int magma_get_dgelqf_nb ( int m )

Definition at line 134 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_dgeqlf_nb ( int m )

Definition at line 98 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_dgeqrf_nb ( int m )

Definition at line 59 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 64;
    else 
        return 128;
}

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int magma_get_dgetrf_nb ( int m )

Definition at line 174 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 64;
    else
        return 128;
}

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int magma_get_dgetri_nb ( int m )

Definition at line 313 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_dpotrf_nb ( int m )

Definition at line 26 of file get_nb_tesla.cpp.

                               {
    if (n <= 3328)
        return 128;
    else if (n <= 4256)
        return 128;
    else 
        return 256;
}

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int magma_get_dsygst_nb ( int m )

Definition at line 290 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_dsytrd_nb ( int m )

Definition at line 240 of file get_nb_tesla.cpp.

                               {
    return 32;
    //return 64;
}

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int magma_get_sgebrd_nb ( int m )

Definition at line 261 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_sgehrd_nb ( int m )

Definition at line 199 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 32;
    else
        return 64;
}

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int magma_get_sgelqf_nb ( int m )

Definition at line 129 of file get_nb_tesla.cpp.

References magma_get_sgeqrf_nb().

                               {
    return magma_get_sgeqrf_nb(m);
}

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int magma_get_sgeqlf_nb ( int m )

Definition at line 88 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_sgeqrf_nb ( int m )

Definition at line 49 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else if (m <= 4032)
        return 64;
    else
        return 128;
}

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int magma_get_sgetrf_nb ( int m )

Definition at line 166 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 64;
    else
        return 128;
}

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int magma_get_sgetri_nb ( int m )

Definition at line 308 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_spotrf_nb ( int m )

Definition at line 16 of file get_nb_tesla.cpp.

                               {
    if (n <= 3328)
        return 128;
    else if (n <= 4256)
        return 224;
    else 
        return 288;
}

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int magma_get_ssygst_nb ( int m )

Definition at line 285 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_ssytrd_nb ( int m )

Definition at line 235 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_zgebrd_nb ( int m )

Definition at line 276 of file get_nb_tesla.cpp.

                               {
    return 32;
}

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int magma_get_zgehrd_nb ( int m )

Definition at line 223 of file get_nb_tesla.cpp.

                               {
    if (m <= 2048)
        return 32;
    else
        return 64;
}

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int magma_get_zgelqf_nb ( int m )

Definition at line 154 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 64;
    else
        return 128;
}

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int magma_get_zgeqlf_nb ( int m )

Definition at line 118 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 64;
    else
        return 128;
}

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int magma_get_zgeqrf_nb ( int m )

Definition at line 77 of file get_nb_tesla.cpp.

                               {
    if (m <= 1024)
        return 64;
    else
        return 128;
}

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int magma_get_zgetrf_nb ( int m )

Definition at line 190 of file get_nb_tesla.cpp.

                               {
    return 128;
}

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int magma_get_zgetri_nb ( int m )

Definition at line 323 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_zhegst_nb ( int m )

Definition at line 300 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_get_zhetrd_nb ( int m )

Definition at line 251 of file get_nb_tesla.cpp.

                               {
    return 32;
    //return 64;
}

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int magma_get_zpotrf_nb ( int m )

Definition at line 41 of file get_nb_tesla.cpp.

                               {
    return 64;
}

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int magma_num_gpus ( void )

Definition at line 17 of file auxiliary.cpp.

References MagmaMaxGPUs, and min.

{
    const char *ngpu_str = getenv("MAGMA_NUM_GPUS");
    int ngpu = 1;
    if ( ngpu_str != NULL ) {
        char* endptr;
        ngpu = strtol( ngpu_str, &endptr, 10 );
        int ndevices;
        cudaGetDeviceCount( &ndevices );
        // if *endptr == '\0' then entire string was valid number (or empty)
        if ( ngpu < 1 or *endptr != '\0' ) {
            ngpu = 1;
            fprintf( stderr, "$MAGMA_NUM_GPUS=%s is an invalid number; using %d GPU.\n",
                     ngpu_str, ngpu );
        }
        else if ( ngpu > MagmaMaxGPUs or ngpu > ndevices ) {
            ngpu = min( ndevices, MagmaMaxGPUs );
            fprintf( stderr, "$MAGMA_NUM_GPUS=%s exceeds MagmaMaxGPUs=%d or available GPUs=%d; using %d GPUs.\n",
                     ngpu_str, MagmaMaxGPUs, ndevices, ngpu );
        }
        assert( 1 <= ngpu and ngpu <= ndevices );
    }
    return ngpu;
}

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size_t magma_strlcpy	(	char *	dst,
		const char *	src,
		size_t	siz
	)

Definition at line 47 of file strlcpy.cpp.

{
    char *d = dst;
    const char *s = src;
    size_t n = siz;
    
    /* Copy as many bytes as will fit */
    if (n != 0) {
        while (--n != 0) {
            if ((*d++ = *s++) == '\0')
                break;
        }
    }
    
    /* Not enough room in dst, add NUL and traverse rest of src */
    if (n == 0) {
        if (siz != 0)
            *d = '\0';     /* NUL-terminate dst */
        while (*s++)
            ;
    }
    
    return (s - src - 1);   /* count does not include NUL */
}

double magma_wtime ( void )

Definition at line 110 of file timer.cpp.

{
    struct timeval t;
    gettimeofday( &t, NULL );
    return t.tv_sec + t.tv_usec*1e-6;
}

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void printout_devices ( )

Definition at line 48 of file auxiliary.cpp.

References lapack_testing::f, and lapack_testing::name.

{
    int ndevices;
    cudaGetDeviceCount( &ndevices );
    for( int idevice = 0; idevice < ndevices; idevice++ ) {
        cudaDeviceProp prop;
        cudaGetDeviceProperties( &prop, idevice );
        printf( "device %d: %s, %.1f MHz clock, %.1f MB memory, capability %d.%d\n",
                idevice,
                prop.name,
                prop.clockRate / 1000.,
                prop.totalGlobalMem / (1024.*1024.),
                prop.major,
                prop.minor );
    }
}

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void swp2pswp	(	char	trans,
		int	n,
		int *	ipiv,
		int *	newipiv
	)

Definition at line 74 of file auxiliary.cpp.

References lapackf77_lsame, and trans.

                                                         {
  int i, newind, ind;
  char            trans_[2] = {trans, 0};
  long int    notran = lapackf77_lsame(trans_, "N");
  for(i=0; i<n; i++)
    newipiv[i] = -1;
  
  if (notran){
    for(i=0; i<n; i++){
      newind = ipiv[i] - 1;
      if (newipiv[newind] == -1) {
        if (newipiv[i]==-1){
          newipiv[i] = newind;
          if (newind>i)
            newipiv[newind]= i;
        }
        else
          {
            ind = newipiv[i];
            newipiv[i] = newind;
            if (newind>i)
              newipiv[newind]= ind;
          }
      }
      else {
        if (newipiv[i]==-1){
          if (newind>i){
            ind = newipiv[newind];
            newipiv[newind] = i;
            newipiv[i] = ind;
          }
          else
            newipiv[i] = newipiv[newind];
        }
        else{
          ind = newipiv[i];
          newipiv[i] = newipiv[newind];
          if (newind > i)
            newipiv[newind] = ind;
        }
      }
    }
  } else {
    for(i=n-1; i>=0; i--){
      newind = ipiv[i] - 1;
      if (newipiv[newind] == -1) {
        if (newipiv[i]==-1){
          newipiv[i] = newind;
          if (newind>i)
            newipiv[newind]= i;
        }
        else
          {
            ind = newipiv[i];
            newipiv[i] = newind;
            if (newind>i)
              newipiv[newind]= ind;
          }
      }
      else {
        if (newipiv[i]==-1){
          if (newind>i){
            ind = newipiv[newind];
            newipiv[newind] = i;
            newipiv[i] = ind;
          }
          else
            newipiv[i] = newipiv[newind];
        }
        else{
          ind = newipiv[i];
          newipiv[i] = newipiv[newind];
          if (newind > i)
            newipiv[newind] = ind;
        }
      }
    }
  }
}

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Typedefs

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Typedef Documentation

Function Documentation