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325 lines
8.9 KiB
C
325 lines
8.9 KiB
C
/*
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BLIS
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An object-based framework for developing high-performance BLAS-like
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libraries.
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Copyright (C) 2014, The University of Texas at Austin
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Copyright (C) 2018-2019, Advanced Micro Devices, Inc.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name(s) of the copyright holder(s) nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef BLIS_CONFIGURETIME_CPUID
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// NOTE: If you need to make any changes to this cpp branch, it's probably
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// the case that you also need to modify bli_arch.c, bli_cpuid.c, and
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// bli_env.c. Don't forget to update these other files as needed!
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// The BLIS_ENABLE_SYSTEM macro must be defined so that the correct cpp
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// branch in bli_system.h is processed. (This macro is normally defined in
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// bli_config.h.)
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#define BLIS_ENABLE_SYSTEM
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// Use C-style static inline functions for any static inline functions that
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// happen to be defined by the headers below. (This macro is normally defined
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// in bli_config_macro_defs.h.)
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#define BLIS_INLINE static
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// Since we're not building a shared library, we can forgo the use of the
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// BLIS_EXPORT_BLIS annotations by #defining them to be nothing. (This macro
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// is normally defined in bli_config_macro_defs.h.)
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#define BLIS_EXPORT_BLIS
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#include "bli_system.h"
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#include "bli_type_defs.h"
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#include "bli_arch.h"
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#include "bli_cpuid.h"
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#include "bli_env.h"
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#else
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#include "blis.h"
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#endif
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// -----------------------------------------------------------------------------
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// The arch_t id for the currently running hardware. We initialize to -1,
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// which will be overwritten upon calling bli_arch_set_id().
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static arch_t id = -1;
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arch_t bli_arch_query_id( void )
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{
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bli_arch_set_id_once();
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// Simply return the id that was previously cached.
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return id;
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}
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// -----------------------------------------------------------------------------
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// A pthread structure used in pthread_once(). pthread_once() is guaranteed to
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// execute exactly once among all threads that pass in this control object.
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static bli_pthread_once_t once_id = BLIS_PTHREAD_ONCE_INIT;
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void bli_arch_set_id_once( void )
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{
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#ifndef BLIS_CONFIGURETIME_CPUID
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bli_pthread_once( &once_id, bli_arch_set_id );
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#endif
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}
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// -----------------------------------------------------------------------------
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void bli_arch_set_id( void )
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{
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// Check the environment variable BLIS_ARCH_DEBUG to see if the user
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// requested that we echo the result of the subconfiguration selection.
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bool do_logging = bli_env_get_var( "BLIS_ARCH_DEBUG", 0 );
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bli_arch_set_logging( do_logging );
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// Check the environment variable BLIS_ARCH_TYPE to see if the user
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// requested that we use a specific subconfiguration.
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dim_t req_id = bli_env_get_var( "BLIS_ARCH_TYPE", -1 );
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#ifndef BLIS_CONFIGURETIME_CPUID
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if ( req_id != -1 )
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{
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// BLIS_ARCH_TYPE was set. Cautiously check whether its value is usable.
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// If req_id was set to an invalid arch_t value (ie: outside the range
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// [0,BLIS_NUM_ARCHS-1]), output an error message and abort.
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if ( bli_error_checking_is_enabled() )
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{
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err_t e_val = bli_check_valid_arch_id( req_id );
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bli_check_error_code( e_val );
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}
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// At this point, we know that req_id is in the valid range, but we
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// don't yet know if it refers to a context that was actually
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// initialized. Query the address of an internal context data structure
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// corresponding to req_id. This pointer will be NULL if the associated
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// subconfig is not available.
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cntx_t** req_cntx = bli_gks_lookup_id( req_id );
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// This function checks the context pointer and aborts with a useful
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// error message if the pointer is found to be NULL.
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if ( bli_error_checking_is_enabled() )
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{
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err_t e_val = bli_check_initialized_gks_cntx( req_cntx );
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bli_check_error_code( e_val );
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}
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// Finally, we can be confident that req_id (1) is in range and (2)
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// refers to a context that has been initialized.
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id = req_id;
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}
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else
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#endif
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{
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// BLIS_ARCH_TYPE was unset. Proceed with normal subconfiguration
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// selection behavior.
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// Architecture families.
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#if defined BLIS_FAMILY_INTEL64 || \
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defined BLIS_FAMILY_AMD64 || \
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defined BLIS_FAMILY_X86_64 || \
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defined BLIS_FAMILY_ARM64 || \
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defined BLIS_FAMILY_ARM32
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id = bli_cpuid_query_id();
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#endif
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// Intel microarchitectures.
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#ifdef BLIS_FAMILY_SKX
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id = BLIS_ARCH_SKX;
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#endif
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#ifdef BLIS_FAMILY_KNL
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id = BLIS_ARCH_KNL;
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#endif
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#ifdef BLIS_FAMILY_KNC
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id = BLIS_ARCH_KNC;
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#endif
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#ifdef BLIS_FAMILY_HASWELL
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id = BLIS_ARCH_HASWELL;
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#endif
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#ifdef BLIS_FAMILY_SANDYBRIDGE
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id = BLIS_ARCH_SANDYBRIDGE;
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#endif
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#ifdef BLIS_FAMILY_PENRYN
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id = BLIS_ARCH_PENRYN;
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#endif
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// AMD microarchitectures.
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#ifdef BLIS_FAMILY_ZEN2
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id = BLIS_ARCH_ZEN2;
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#endif
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#ifdef BLIS_FAMILY_ZEN
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id = BLIS_ARCH_ZEN;
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#endif
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#ifdef BLIS_FAMILY_EXCAVATOR
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id = BLIS_ARCH_EXCAVATOR;
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#endif
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#ifdef BLIS_FAMILY_STEAMROLLER
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id = BLIS_ARCH_STEAMROLLER;
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#endif
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#ifdef BLIS_FAMILY_PILEDRIVER
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id = BLIS_ARCH_PILEDRIVER;
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#endif
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#ifdef BLIS_FAMILY_BULLDOZER
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id = BLIS_ARCH_BULLDOZER;
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#endif
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// ARM microarchitectures.
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#ifdef BLIS_FAMILY_ARMSVE
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id = BLIS_ARCH_ARMSVE;
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#endif
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#ifdef BLIS_FAMILY_A64FX
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id = BLIS_ARCH_A64FX;
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#endif
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#ifdef BLIS_FAMILY_FIRESTORM
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id = BLIS_ARCH_FIRESTORM;
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#endif
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#ifdef BLIS_FAMILY_THUNDERX2
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id = BLIS_ARCH_THUNDERX2;
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#endif
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#ifdef BLIS_FAMILY_CORTEXA57
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id = BLIS_ARCH_CORTEXA57;
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#endif
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#ifdef BLIS_FAMILY_CORTEXA53
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id = BLIS_ARCH_CORTEXA53;
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#endif
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#ifdef BLIS_FAMILY_CORTEXA15
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id = BLIS_ARCH_CORTEXA15;
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#endif
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#ifdef BLIS_FAMILY_CORTEXA9
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id = BLIS_ARCH_CORTEXA9;
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#endif
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// IBM microarchitectures.
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#ifdef BLIS_FAMILY_POWER10
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id = BLIS_ARCH_POWER10;
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#endif
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#ifdef BLIS_FAMILY_POWER9
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id = BLIS_ARCH_POWER9;
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#endif
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#ifdef BLIS_FAMILY_POWER7
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id = BLIS_ARCH_POWER7;
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#endif
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#ifdef BLIS_FAMILY_BGQ
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id = BLIS_ARCH_BGQ;
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#endif
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// Generic microarchitecture.
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#ifdef BLIS_FAMILY_GENERIC
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id = BLIS_ARCH_GENERIC;
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#endif
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}
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if ( bli_arch_get_logging() )
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fprintf( stderr, "libblis: selecting sub-configuration '%s'.\n",
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bli_arch_string( id ) );
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//printf( "blis_arch_query_id(): id = %u\n", id );
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//exit(1);
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}
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// -----------------------------------------------------------------------------
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// NOTE: This string array must be kept up-to-date with the arch_t
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// enumeration that is typedef'ed in bli_type_defs.h. That is, the
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// index order of each string should correspond to the implied/assigned
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// enum value given to the corresponding BLIS_ARCH_ value.
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static char* config_name[ BLIS_NUM_ARCHS ] =
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{
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"skx",
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"knl",
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"knc",
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"haswell",
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"sandybridge",
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"penryn",
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"zen2",
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"zen",
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"excavator",
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"steamroller",
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"piledriver",
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"bulldozer",
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"armsve",
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"a64fx",
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"firestorm",
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"thunderx2",
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"cortexa57",
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"cortexa53",
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"cortexa15",
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"cortexa9",
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"power10",
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"power9",
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"power7",
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"bgq",
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"generic"
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};
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char* bli_arch_string( arch_t id )
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{
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return config_name[ id ];
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}
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// -----------------------------------------------------------------------------
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static bool arch_dolog = 0;
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void bli_arch_set_logging( bool dolog )
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{
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arch_dolog = dolog;
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}
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bool bli_arch_get_logging( void )
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{
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return arch_dolog;
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}
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void bli_arch_log( char* fmt, ... )
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{
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char prefix[] = "libblis: ";
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int n_chars = strlen( prefix ) + strlen( fmt ) + 1;
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if ( bli_arch_get_logging() && fmt )
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{
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char* prefix_fmt = malloc( n_chars );
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snprintf( prefix_fmt, n_chars, "%s%s", prefix, fmt );
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va_list ap;
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va_start( ap, fmt );
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vfprintf( stderr, prefix_fmt, ap );
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va_end( ap );
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free( prefix_fmt );
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}
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}
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