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blis/testsuite/src/test_her2.c
Field G. Van Zee c31b1e7b9d Relax alignment restrictions for sandybridge ukrs. 
Details:
- Relaxed the base pointer and leading dimension alignment restrictions
  in the sandybridge gemm microkernels, allowing the use of vmovups/vmovupd
  instead of vmovaps/vmovapd. These change mimic those made to the haswell
  microkernels in e0d2fa0 and ee2c139.
- Updated testsuite modules as well as standalone test drivers in 'test'
  directory to use DBL_MAX as the initial time candidate. Thanks to Devin
  Matthews for suggesting this change.
- Inserted #include "float.h" into bli_system.h (to gain access to DBL_MAX).
- Minor update (vis-a-vis contexts) to driver code in test/3m4m.
2016-07-27 15:58:07 -05:00

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/*
BLIS
An object-based framework for developing high-performance BLAS-like
libraries.
Copyright (C) 2014, The University of Texas at Austin
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 = "her2";
static char* o_types = "vvm"; // x y a
static char* p_types = "ucc"; // uploa conjx conjy
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_her2_deps
(
test_params_t* params,
test_op_t* op
);
void libblis_test_her2_experiment
(
test_params_t* params,
test_op_t* op,
iface_t iface,
num_t datatype,
char* pc_str,
char* sc_str,
unsigned int p_cur,
double* perf,
double* resid
);
void libblis_test_her2_impl
(
iface_t iface,
obj_t* alpha,
obj_t* x,
obj_t* y,
obj_t* a
);
void libblis_test_her2_check
(
test_params_t* params,
obj_t* alpha,
obj_t* x,
obj_t* y,
obj_t* a,
obj_t* a_orig,
double* resid
);
void libblis_test_her2_deps
(
test_params_t* params,
test_op_t* op
)
{
libblis_test_randv( params, &(op->ops->randv) );
libblis_test_randm( params, &(op->ops->randm) );
libblis_test_normfv( params, &(op->ops->normfv) );
libblis_test_subv( params, &(op->ops->subv) );
libblis_test_copym( params, &(op->ops->copym) );
libblis_test_scal2v( params, &(op->ops->scal2v) );
libblis_test_dotv( params, &(op->ops->dotv) );
libblis_test_gemv( params, &(op->ops->gemv) );
}
void libblis_test_her2
(
test_params_t* params,
test_op_t* op
)
{
// Return early if this test has already been done.
if ( op->test_done == TRUE ) return;
// Return early if operation is disabled.
if ( op->op_switch == DISABLE_ALL ||
op->ops->l2_over == DISABLE_ALL ) return;
// Call dependencies first.
if ( TRUE ) libblis_test_her2_deps( params, op );
// Execute the test driver for each implementation requested.
if ( op->front_seq == ENABLE )
{
libblis_test_op_driver( params,
op,
BLIS_TEST_SEQ_FRONT_END,
op_str,
p_types,
o_types,
thresh,
libblis_test_her2_experiment );
}
}
void libblis_test_her2_experiment
(
test_params_t* params,
test_op_t* op,
iface_t iface,
num_t datatype,
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;
dim_t m;
uplo_t uploa;
conj_t conjx, conjy;
obj_t alpha, x, y, a;
obj_t a_save;
// Map the dimension specifier to an actual dimension.
m = libblis_test_get_dim_from_prob_size( op->dim_spec[0], p_cur );
// Map parameter characters to BLIS constants.
bli_param_map_char_to_blis_uplo( pc_str[0], &uploa );
bli_param_map_char_to_blis_conj( pc_str[1], &conjx );
bli_param_map_char_to_blis_conj( pc_str[2], &conjy );
// Create test scalars.
bli_obj_scalar_init_detached( datatype, &alpha );
// Create test operands (vectors and/or matrices).
libblis_test_vobj_create( params, datatype,
sc_str[0], m, &x );
libblis_test_vobj_create( params, datatype,
sc_str[1], m, &y );
libblis_test_mobj_create( params, datatype, BLIS_NO_TRANSPOSE,
sc_str[2], m, m, &a );
libblis_test_mobj_create( params, datatype, BLIS_NO_TRANSPOSE,
sc_str[2], m, m, &a_save );
// Set alpha.
//bli_copysc( &BLIS_MINUS_ONE, &alpha );
bli_setsc( -1.0, 1.0, &alpha );
// Randomize x and y.
libblis_test_vobj_randomize( params, TRUE, &x );
libblis_test_vobj_randomize( params, TRUE, &y );
// Set the structure and uplo properties of A.
bli_obj_set_struc( BLIS_HERMITIAN, a );
bli_obj_set_uplo( uploa, a );
// Randomize A, make it densely Hermitian, and zero the unstored triangle
// to ensure the implementation is reads only from the stored region.
libblis_test_mobj_randomize( params, TRUE, &a );
bli_mkherm( &a );
bli_mktrim( &a );
// Save A and set its structure and uplo properties.
bli_obj_set_struc( BLIS_HERMITIAN, a_save );
bli_obj_set_uplo( uploa, a_save );
bli_copym( &a, &a_save );
// Apply the remaining parameters.
bli_obj_set_conj( conjx, x );
bli_obj_set_conj( conjy, y );
// Repeat the experiment n_repeats times and record results.
for ( i = 0; i < n_repeats; ++i )
{
bli_copym( &a_save, &a );
time = bli_clock();
libblis_test_her2_impl( iface, &alpha, &x, &y, &a );
time_min = bli_clock_min_diff( time_min, time );
}
// Estimate the performance of the best experiment repeat.
*perf = ( 2.0 * m * m ) / time_min / FLOPS_PER_UNIT_PERF;
if ( bli_obj_is_complex( a ) ) *perf *= 4.0;
// Perform checks.
libblis_test_her2_check( params, &alpha, &x, &y, &a, &a_save, resid );
// Zero out performance and residual if output matrix is empty.
libblis_test_check_empty_problem( &a, perf, resid );
// Free the test objects.
bli_obj_free( &x );
bli_obj_free( &y );
bli_obj_free( &a );
bli_obj_free( &a_save );
}
void libblis_test_her2_impl
(
iface_t iface,
obj_t* alpha,
obj_t* x,
obj_t* y,
obj_t* a
)
{
switch ( iface )
{
case BLIS_TEST_SEQ_FRONT_END:
bli_her2( alpha, x, y, a );
break;
default:
libblis_test_printf_error( "Invalid interface type.\n" );
}
}
void libblis_test_her2_check
(
test_params_t* params,
obj_t* alpha,
obj_t* x,
obj_t* y,
obj_t* a,
obj_t* a_orig,
double* resid
)
{
num_t dt = bli_obj_datatype( *a );
num_t dt_real = bli_obj_datatype_proj_to_real( *a );
dim_t m_a = bli_obj_length( *a );
obj_t xh, yh, alphac;
obj_t t, v, w1, w2;
obj_t rho, norm;
double junk;
//
// Pre-conditions:
// - x is randomized.
// - y is randomized.
// - a is randomized and Hermitian.
//
// Under these conditions, we assume that the implementation for
//
// A := A_orig + alpha * conjx(x) * conjy(y)^H + conj(alpha) * conjy(y) * conjx(x)^H
//
// is functioning correctly if
//
// normf( v - w )
//
// is negligible, where
//
// v = A * t
// w = ( A_orig + alpha * conjx(x) * conjy(y)^H + conj(alpha) * conjy(y) * conjx(x)^H ) * t
// = A_orig * t + alpha * conjx(x) * conjy(y)^H * t + conj(alpha) * conjy(y) * conjx(x)^H * t
// = A_orig * t + alpha * conjx(x) * conjy(y)^H * t + conj(alpha) * conjy(y) * rho
// = A_orig * t + alpha * conjx(x) * conjy(y)^H * t + w1
// = A_orig * t + alpha * conjx(x) * rho + w1
// = A_orig * t + w2 + w1
//
bli_mkherm( a );
bli_mkherm( a_orig );
bli_obj_set_struc( BLIS_GENERAL, *a );
bli_obj_set_struc( BLIS_GENERAL, *a_orig );
bli_obj_set_uplo( BLIS_DENSE, *a );
bli_obj_set_uplo( BLIS_DENSE, *a_orig );
bli_obj_scalar_init_detached( dt, &rho );
bli_obj_scalar_init_detached( dt, &alphac );
bli_obj_scalar_init_detached( dt_real, &norm );
bli_obj_create( dt, m_a, 1, 0, 0, &t );
bli_obj_create( dt, m_a, 1, 0, 0, &v );
bli_obj_create( dt, m_a, 1, 0, 0, &w1 );
bli_obj_create( dt, m_a, 1, 0, 0, &w2 );
bli_obj_alias_with_conj( BLIS_CONJUGATE, *x, xh );
bli_obj_alias_with_conj( BLIS_CONJUGATE, *y, yh );
bli_obj_alias_with_conj( BLIS_CONJUGATE, *alpha, alphac );
libblis_test_vobj_randomize( params, TRUE, &t );
bli_gemv( &BLIS_ONE, a, &t, &BLIS_ZERO, &v );
bli_dotv( &xh, &t, &rho );
bli_mulsc( &alphac, &rho );
bli_scal2v( &rho, y, &w1 );
bli_dotv( &yh, &t, &rho );
bli_mulsc( alpha, &rho );
bli_scal2v( &rho, x, &w2 );
bli_addv( &w2, &w1 );
bli_gemv( &BLIS_ONE, a_orig, &t, &BLIS_ONE, &w1 );
bli_subv( &w1, &v );
bli_normfv( &v, &norm );
bli_getsc( &norm, resid, &junk );
bli_obj_free( &t );
bli_obj_free( &v );
bli_obj_free( &w1 );
bli_obj_free( &w2 );
}
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