Files
blis/testsuite/src/test_gemm.c
Field G. Van Zee 375eb30b0a Added mixed-precision support to 1m method.
Details:
- Lifted the constraint that 1m only be used when all operands' storage
  datatypes (along with the computation datatype) are equal. Now, 1m may
  be used as long as all operands are stored in the complex domain. This
  change largely consisted of adding the ability to pack to 1e and 1r
  formats from one precision to another. It also required adding logic
  for handling complex values of alpha to bli_packm_blk_var1_md()
  (similar to the logic in bli_packm_blk_var1()).
- Fixed a bug in several virtual microkernels (bli_gemm_md_c2r_ref.c,
  bli_gemm1m_ref.c, and bli_gemmtrsm1m_ref.c) that resulted in the wrong
  ukernel output preference field being read. Previously, the preference
  for the native complex ukernel was being read instead of the pref for
  the native real domain ukernel. This bug would not manifest if the
  preference for the native complex ukernel happened to be equal to that
  of the native real ukernel.
- Added support for testing mixed-precision 1m execution via the gemm
  module of the testsuite.
- Tweaked/simplified bli_gemm_front() and bli_gemm_md.c so that pack
  schemas are always read from the context, rather than trying to
  sometimes embed them directly to the A and B objects. (They are still
  embedded, but now uniformly only after reading the schemas from the
  context.)
- Redefined cpp macro bli_l3_ind_recast_1m_params() as a static function
  and renamed to bli_gemm_ind_recast_1m_params() (since gemm is the only
  consumer).
- Added 1m optimization logic (via bli_gemm_ind_recast_1m_params()) to
  bli_gemm_ker_var2_md().
- Added explicit handling for beta == 1 and beta == 0 in the reference
  gemm1m virtual microkernel in ref_kernels/ind/bli_gemm1m_ref.c.
- Rewrote various level-0 macro defs, including axpyris, axpbyris,
  scal2ris, and xpbyris (and their conjugating counterparts) to
  explicitly support three operand types and updated invocations to
  xpbyris in bli_gemmtrsm1m_ref.c.
- Query and use the storage datatype of the packed object instead of the
  storage datatype of the source object in bli_packm_blk_var1().
- Relocated and renamed frame/ind/misc/bli_l3_ind_opt.h to
  frame/3/gemm/ind/bli_gemm_ind_opt.h.
- Various whitespace/comment updates.
2018-12-03 17:49:52 -06:00

696 lines
19 KiB
C

/*
BLIS
An object-based framework for developing high-performance BLAS-like
libraries.
Copyright (C) 2014, The University of Texas at Austin
Copyright (C) 2018, Advanced Micro Devices, Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of The University of Texas at Austin nor the names
of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "blis.h"
#include "test_libblis.h"
// Static variables.
static char* op_str = "gemm";
static char* o_types = "mmm"; // a b c
static char* p_types = "hh"; // transa transb
static thresh_t thresh[BLIS_NUM_FP_TYPES] = { { 1e-04, 1e-05 }, // warn, pass for s
{ 1e-04, 1e-05 }, // warn, pass for c
{ 1e-13, 1e-14 }, // warn, pass for d
{ 1e-13, 1e-14 } }; // warn, pass for z
// Local prototypes.
void libblis_test_gemm_deps
(
thread_data_t* tdata,
test_params_t* params,
test_op_t* op
);
void libblis_test_gemm_experiment
(
test_params_t* params,
test_op_t* op,
iface_t iface,
char* dc_str,
char* pc_str,
char* sc_str,
unsigned int p_cur,
double* perf,
double* resid
);
void libblis_test_gemm_md
(
test_params_t* params,
test_op_t* op,
iface_t iface,
char* dc_str,
char* pc_str,
char* sc_str,
unsigned int p_cur,
double* perf,
double* resid
);
void libblis_test_gemm_impl
(
iface_t iface,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c
);
void libblis_test_gemm_check
(
test_params_t* params,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c,
obj_t* c_orig,
double* resid
);
void libblis_test_gemm_md_check
(
test_params_t* params,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c,
obj_t* c_orig,
double* resid
);
double libblis_test_gemm_flops
(
obj_t* a,
obj_t* b,
obj_t* c
);
void libblis_test_gemm_deps
(
thread_data_t* tdata,
test_params_t* params,
test_op_t* op
)
{
libblis_test_randv( tdata, params, &(op->ops->randv) );
libblis_test_randm( tdata, params, &(op->ops->randm) );
libblis_test_setv( tdata, params, &(op->ops->setv) );
libblis_test_normfv( tdata, params, &(op->ops->normfv) );
libblis_test_subv( tdata, params, &(op->ops->subv) );
libblis_test_scalv( tdata, params, &(op->ops->scalv) );
libblis_test_copym( tdata, params, &(op->ops->copym) );
libblis_test_scalm( tdata, params, &(op->ops->scalm) );
libblis_test_gemv( tdata, params, &(op->ops->gemv) );
}
void libblis_test_gemm
(
thread_data_t* tdata,
test_params_t* params,
test_op_t* op
)
{
// Return early if this test has already been done.
if ( libblis_test_op_is_done( op ) ) return;
// Return early if operation is disabled.
if ( libblis_test_op_is_disabled( op ) ||
libblis_test_l3_is_disabled( op ) ) return;
// Call dependencies first.
if ( TRUE ) libblis_test_gemm_deps( tdata, params, op );
// Execute the test driver for each implementation requested.
//if ( op->front_seq == ENABLE )
{
libblis_test_op_driver( tdata,
params,
op,
BLIS_TEST_SEQ_FRONT_END,
op_str,
p_types,
o_types,
thresh,
libblis_test_gemm_experiment );
}
}
void libblis_test_gemm_experiment
(
test_params_t* params,
test_op_t* op,
iface_t iface,
char* dc_str,
char* pc_str,
char* sc_str,
unsigned int p_cur,
double* perf,
double* resid
)
{
unsigned int n_repeats = params->n_repeats;
unsigned int i;
double time_min = DBL_MAX;
double time;
num_t datatype;
dim_t m, n, k;
trans_t transa;
trans_t transb;
obj_t alpha, a, b, beta, c;
obj_t c_save;
// Use a different function to handle mixed datatypes.
if ( params->mixed_domain || params->mixed_precision )
{
libblis_test_gemm_md( params, op, iface,
dc_str, pc_str, sc_str,
p_cur, perf, resid );
return;
}
// Use the datatype of the first char in the datatype combination string.
bli_param_map_char_to_blis_dt( dc_str[0], &datatype );
// Map the dimension specifier to actual dimensions.
m = libblis_test_get_dim_from_prob_size( op->dim_spec[0], p_cur );
n = libblis_test_get_dim_from_prob_size( op->dim_spec[1], p_cur );
k = libblis_test_get_dim_from_prob_size( op->dim_spec[2], p_cur );
// Map parameter characters to BLIS constants.
bli_param_map_char_to_blis_trans( pc_str[0], &transa );
bli_param_map_char_to_blis_trans( pc_str[1], &transb );
// Create test scalars.
bli_obj_scalar_init_detached( datatype, &alpha );
bli_obj_scalar_init_detached( datatype, &beta );
// Create test operands (vectors and/or matrices).
libblis_test_mobj_create( params, datatype, transa,
sc_str[1], m, k, &a );
libblis_test_mobj_create( params, datatype, transb,
sc_str[1], k, n, &b );
libblis_test_mobj_create( params, datatype, BLIS_NO_TRANSPOSE,
sc_str[2], m, n, &c );
libblis_test_mobj_create( params, datatype, BLIS_NO_TRANSPOSE,
sc_str[2], m, n, &c_save );
// Set alpha and beta.
if ( bli_obj_is_real( &c ) )
{
bli_setsc( 1.2, 0.0, &alpha );
bli_setsc( 0.9, 0.0, &beta );
}
else
{
bli_setsc( 1.2, 0.8, &alpha );
bli_setsc( 0.9, 1.0, &beta );
}
// Randomize A, B, and C, and save C.
libblis_test_mobj_randomize( params, TRUE, &a );
libblis_test_mobj_randomize( params, TRUE, &b );
libblis_test_mobj_randomize( params, TRUE, &c );
bli_copym( &c, &c_save );
// Apply the parameters.
bli_obj_set_conjtrans( transa, &a );
bli_obj_set_conjtrans( transb, &b );
// Repeat the experiment n_repeats times and record results.
for ( i = 0; i < n_repeats; ++i )
{
bli_copym( &c_save, &c );
time = bli_clock();
libblis_test_gemm_impl( iface, &alpha, &a, &b, &beta, &c );
time_min = bli_clock_min_diff( time_min, time );
}
// Estimate the performance of the best experiment repeat.
*perf = ( 2.0 * m * n * k ) / time_min / FLOPS_PER_UNIT_PERF;
if ( bli_obj_is_complex( &c ) ) *perf *= 4.0;
// Perform checks.
libblis_test_gemm_check( params, &alpha, &a, &b, &beta, &c, &c_save, resid );
// Zero out performance and residual if output matrix is empty.
libblis_test_check_empty_problem( &c, perf, resid );
// Free the test objects.
bli_obj_free( &a );
bli_obj_free( &b );
bli_obj_free( &c );
bli_obj_free( &c_save );
}
void libblis_test_gemm_md
(
test_params_t* params,
test_op_t* op,
iface_t iface,
char* dc_str,
char* pc_str,
char* sc_str,
unsigned int p_cur,
double* perf,
double* resid
)
{
unsigned int n_repeats = params->n_repeats;
unsigned int i;
double time_min = DBL_MAX;
double time;
num_t dt_a, dt_b, dt_c;
num_t dt_complex;
dim_t m, n, k;
trans_t transa;
trans_t transb;
obj_t alpha, a, b, beta, c;
obj_t c_save;
// Decode the datatype combination string.
bli_param_map_char_to_blis_dt( dc_str[0], &dt_c );
bli_param_map_char_to_blis_dt( dc_str[1], &dt_a );
bli_param_map_char_to_blis_dt( dc_str[2], &dt_b );
// Project one of the datatypes (it doesn't matter which) to the
// complex domain.
dt_complex = bli_dt_proj_to_complex( dt_c );
// Map the dimension specifier to actual dimensions.
m = libblis_test_get_dim_from_prob_size( op->dim_spec[0], p_cur );
n = libblis_test_get_dim_from_prob_size( op->dim_spec[1], p_cur );
k = libblis_test_get_dim_from_prob_size( op->dim_spec[2], p_cur );
// Map parameter characters to BLIS constants.
bli_param_map_char_to_blis_trans( pc_str[0], &transa );
bli_param_map_char_to_blis_trans( pc_str[1], &transb );
// Create test scalars.
bli_obj_scalar_init_detached( dt_complex, &alpha );
bli_obj_scalar_init_detached( dt_complex, &beta );
// Create test operands (vectors and/or matrices).
libblis_test_mobj_create( params, dt_a, transa,
sc_str[0], m, k, &a );
libblis_test_mobj_create( params, dt_b, transb,
sc_str[1], k, n, &b );
libblis_test_mobj_create( params, dt_c, BLIS_NO_TRANSPOSE,
sc_str[2], m, n, &c );
libblis_test_mobj_create( params, dt_c, BLIS_NO_TRANSPOSE,
sc_str[2], m, n, &c_save );
// For mixed-precision, set the computation precision of C.
if ( params->mixed_precision )
{
num_t dt_comp;
prec_t comp_prec;
// The computation precision is encoded in the computation datatype,
// which appears as an additional char in dc_str.
bli_param_map_char_to_blis_dt( dc_str[3], &dt_comp );
// Extract the precision from the computation datatype.
comp_prec = bli_dt_prec( dt_comp );
// Set the computation precision of C.
bli_obj_set_comp_prec( comp_prec, &c );
}
// Set alpha and beta.
{
bli_setsc( 2.0, 0.0, &alpha );
bli_setsc( 1.2, 0.5, &beta );
//bli_setsc( 1.0, 0.0, &alpha );
//bli_setsc( 1.0, 0.0, &beta );
}
// Randomize A, B, and C, and save C.
libblis_test_mobj_randomize( params, TRUE, &a );
libblis_test_mobj_randomize( params, TRUE, &b );
libblis_test_mobj_randomize( params, TRUE, &c );
bli_copym( &c, &c_save );
// Apply the parameters.
bli_obj_set_conjtrans( transa, &a );
bli_obj_set_conjtrans( transb, &b );
// Repeat the experiment n_repeats times and record results.
for ( i = 0; i < n_repeats; ++i )
{
bli_copym( &c_save, &c );
time = bli_clock();
#if 0
bli_printm( "a", &a, "%5.2f", "" );
bli_printm( "b", &b, "%5.2f", "" );
bli_printm( "c", &c, "%5.2f", "" );
bli_printm( "alpha", &alpha, "%5.2f", "" );
bli_printm( "beta", &beta, "%5.2f", "" );
#endif
libblis_test_gemm_impl( iface, &alpha, &a, &b, &beta, &c );
#if 0
bli_printm( "c after", &c, "%5.2f", "" );
#endif
time_min = bli_clock_min_diff( time_min, time );
}
// Estimate the performance of the best experiment repeat.
//*perf = ( 2.0 * m * n * k ) / time_min / FLOPS_PER_UNIT_PERF;
//if ( bli_obj_is_complex( &c ) ) *perf *= 4.0;
*perf = libblis_test_gemm_flops( &a, &b, &c ) / time_min / FLOPS_PER_UNIT_PERF;
// Perform checks.
libblis_test_gemm_md_check( params, &alpha, &a, &b, &beta, &c, &c_save, resid );
// Zero out performance and residual if output matrix is empty.
libblis_test_check_empty_problem( &c, perf, resid );
// Free the test objects.
bli_obj_free( &a );
bli_obj_free( &b );
bli_obj_free( &c );
bli_obj_free( &c_save );
}
void libblis_test_gemm_impl
(
iface_t iface,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c
)
{
switch ( iface )
{
case BLIS_TEST_SEQ_FRONT_END:
#if 0
bli_printm( "a", a, "%5.2f", "" );
bli_printm( "b", b, "%5.2f", "" );
bli_printm( "c", c, "%5.2f", "" );
bli_printm( "alpha", alpha, "%5.2f", "" );
bli_printm( "beta", beta, "%5.2f", "" );
#endif
bli_gemm( alpha, a, b, beta, c );
#if 0
bli_printm( "c after", c, "%5.2f", "" );
#endif
break;
default:
libblis_test_printf_error( "Invalid interface type.\n" );
}
}
void libblis_test_gemm_md_check
(
test_params_t* params,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c,
obj_t* c_orig,
double* resid
)
{
num_t dt_real = bli_obj_dt_proj_to_real( c );
num_t dt_comp = bli_obj_dt_proj_to_complex( c );
num_t dt;
dim_t m = bli_obj_length( c );
dim_t n = bli_obj_width( c );
dim_t k = bli_obj_width_after_trans( a );
obj_t norm;
obj_t t, v, w, z;
double junk;
// Compute our reference checksum in the real domain if all operands
// are real, and in the complex domain otherwise. Also implicit in this
// is that we use the storage precision of C to determine the precision
// in which we perform the reference checksum.
if ( bli_obj_is_real( a ) &&
bli_obj_is_real( b ) &&
bli_obj_is_real( c ) ) dt = dt_real;
else dt = dt_comp;
// This function works in a manner similar to that of the function
// libblis_test_gemm_check(), except that we project a, b, and c into
// the complex domain (regardless of their storage datatype), and then
// proceed with the checking accordingly.
obj_t a2, b2, c2, c0;
bli_obj_scalar_init_detached( dt_real, &norm );
bli_obj_create( dt, n, 1, 0, 0, &t );
bli_obj_create( dt, m, 1, 0, 0, &v );
bli_obj_create( dt, k, 1, 0, 0, &w );
bli_obj_create( dt, m, 1, 0, 0, &z );
libblis_test_vobj_randomize( params, TRUE, &t );
// We need to zero out the imaginary part of t in order for our
// checks to work in all cases. Otherwise, the imaginary parts
// could affect intermediate products, depending on the order that
// they are executed.
bli_setiv( &BLIS_ZERO, &t );
// Create complex equivalents of a, b, c_orig, and c.
bli_obj_create( dt, m, k, 0, 0, &a2 );
bli_obj_create( dt, k, n, 0, 0, &b2 );
bli_obj_create( dt, m, n, 0, 0, &c2 );
bli_obj_create( dt, m, n, 0, 0, &c0 );
// Cast a, b, c_orig, and c into the datatype of our temporary objects.
bli_castm( a, &a2 );
bli_castm( b, &b2 );
bli_castm( c_orig, &c2 );
bli_castm( c, &c0 );
bli_gemv( &BLIS_ONE, &c0, &t, &BLIS_ZERO, &v );
#if 0
if ( bli_obj_is_scomplex( c ) &&
bli_obj_is_float( a ) &&
bli_obj_is_float( b ) )
{
bli_printm( "test_gemm.c: a", a, "%7.3f", "" );
bli_printm( "test_gemm.c: b", b, "%7.3f", "" );
bli_printm( "test_gemm.c: c orig", c_orig, "%7.3f", "" );
bli_printm( "test_gemm.c: c computed", c, "%7.3f", "" );
}
#endif
#if 0
bli_gemm( alpha, &a2, &b2, beta, &c2 );
bli_gemv( &BLIS_ONE, &c2, &t, &BLIS_ZERO, &z );
if ( bli_obj_is_real( c ) ) bli_setiv( &BLIS_ZERO, &z );
#else
bli_gemv( &BLIS_ONE, &b2, &t, &BLIS_ZERO, &w );
bli_gemv( alpha, &a2, &w, &BLIS_ZERO, &z );
bli_gemv( beta, &c2, &t, &BLIS_ONE, &z );
if ( bli_obj_is_real( c ) ) bli_setiv( &BLIS_ZERO, &z );
#endif
bli_subv( &z, &v );
bli_normfv( &v, &norm );
bli_getsc( &norm, resid, &junk );
bli_obj_free( &t );
bli_obj_free( &v );
bli_obj_free( &w );
bli_obj_free( &z );
bli_obj_free( &a2 );
bli_obj_free( &b2 );
bli_obj_free( &c2 );
bli_obj_free( &c0 );
}
void libblis_test_gemm_check
(
test_params_t* params,
obj_t* alpha,
obj_t* a,
obj_t* b,
obj_t* beta,
obj_t* c,
obj_t* c_orig,
double* resid
)
{
num_t dt = bli_obj_dt( c );
num_t dt_real = bli_obj_dt_proj_to_real( c );
dim_t m = bli_obj_length( c );
dim_t n = bli_obj_width( c );
dim_t k = bli_obj_width_after_trans( a );
obj_t norm;
obj_t t, v, w, z;
double junk;
//
// Pre-conditions:
// - a is randomized.
// - b is randomized.
// - c_orig is randomized.
// Note:
// - alpha and beta should have non-zero imaginary components in the
// complex cases in order to more fully exercise the implementation.
//
// Under these conditions, we assume that the implementation for
//
// C := beta * C_orig + alpha * transa(A) * transb(B)
//
// is functioning correctly if
//
// normf( v - z )
//
// is negligible, where
//
// v = C * t
// z = ( beta * C_orig + alpha * transa(A) * transb(B) ) * t
// = beta * C_orig * t + alpha * transa(A) * transb(B) * t
// = beta * C_orig * t + alpha * transa(A) * w
// = beta * C_orig * t + z
//
bli_obj_scalar_init_detached( dt_real, &norm );
bli_obj_create( dt, n, 1, 0, 0, &t );
bli_obj_create( dt, m, 1, 0, 0, &v );
bli_obj_create( dt, k, 1, 0, 0, &w );
bli_obj_create( dt, m, 1, 0, 0, &z );
libblis_test_vobj_randomize( params, TRUE, &t );
bli_gemv( &BLIS_ONE, c, &t, &BLIS_ZERO, &v );
bli_gemv( &BLIS_ONE, b, &t, &BLIS_ZERO, &w );
bli_gemv( alpha, a, &w, &BLIS_ZERO, &z );
bli_gemv( beta, c_orig, &t, &BLIS_ONE, &z );
bli_subv( &z, &v );
bli_normfv( &v, &norm );
bli_getsc( &norm, resid, &junk );
bli_obj_free( &t );
bli_obj_free( &v );
bli_obj_free( &w );
bli_obj_free( &z );
}
double libblis_test_gemm_flops
(
obj_t* a,
obj_t* b,
obj_t* c
)
{
bool_t a_is_real = bli_obj_is_real( a );
bool_t a_is_complex = bli_obj_is_complex( a );
bool_t b_is_real = bli_obj_is_real( b );
bool_t b_is_complex = bli_obj_is_complex( b );
bool_t c_is_real = bli_obj_is_real( c );
bool_t c_is_complex = bli_obj_is_complex( c );
double m = ( double )bli_obj_length( c );
double n = ( double )bli_obj_width( c );
double k = ( double )bli_obj_width( a );
double flops;
if ( ( c_is_complex && a_is_complex && b_is_complex ) )
{
flops = 8.0 * m * n * k;
}
else if ( ( c_is_complex && a_is_complex && b_is_real ) ||
( c_is_complex && a_is_real && b_is_complex ) ||
( c_is_real && a_is_complex && b_is_complex ) )
{
flops = 4.0 * m * n * k;
}
else
{
flops = 2.0 * m * n * k;
}
return flops;
}