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create openblas_get_parallel to retrieve information which 

parallelization model is used by OpenBLAS.
This commit is contained in:
grisuthedragon 2013-07-11 13:39:27 +02:00 committed by Zhang Xianyi
parent 32d2ca3035
commit c19a488af2
5 changed files with 86 additions and 3 deletions
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10
cblas.h
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@ -16,6 +16,16 @@ void goto_set_num_threads(int num_threads);
/*Get the build configure on runtime.*/
char* openblas_get_config(void);
/* Get the parallelization type which is used by OpenBLAS */
int openblas_get_parallel(void);
/* OpenBLAS is compiled for sequential use */
#define OPENBLAS_SEQUENTIAL 0
/* OpenBLAS is compiled using normal threading model */
#define OPENBLAS_THREAD 1
/* OpenBLAS is compiled using OpenMP threading model */
#define OPENBLAS_OPENMP 2
#define CBLAS_INDEX size_t
typedef enum CBLAS_ORDER {CblasRowMajor=101, CblasColMajor=102} CBLAS_ORDER;

5
driver/others/Makefile
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@ -1,7 +1,7 @@
TOPDIR = ../..
include ../../Makefile.system
COMMONOBJS = memory.$(SUFFIX) xerbla.$(SUFFIX) c_abs.$(SUFFIX) z_abs.$(SUFFIX) openblas_set_num_threads.$(SUFFIX) openblas_get_config.$(SUFFIX)
COMMONOBJS = memory.$(SUFFIX) xerbla.$(SUFFIX) c_abs.$(SUFFIX) z_abs.$(SUFFIX) openblas_set_num_threads.$(SUFFIX) openblas_get_config.$(SUFFIX) openblas_get_parallel.$(SUFFIX)
COMMONOBJS += slamch.$(SUFFIX) slamc3.$(SUFFIX) dlamch.$(SUFFIX) dlamc3.$(SUFFIX)
@ -106,6 +106,9 @@ openblas_set_num_threads.$(SUFFIX) : openblas_set_num_threads.c
openblas_get_config.$(SUFFIX) : openblas_get_config.c
$(CC) $(CFLAGS) -c $< -o $(@F)
openblas_get_parallel.$(SUFFIX) : openblas_get_parallel.c
$(CC) $(CFLAGS) -c $< -o $(@F)
blasL1thread.$(SUFFIX) : blas_l1_thread.c ../../common.h ../../common_thread.h
$(CC) $(CFLAGS) -c $< -o $(@F)

52
driver/others/openblas_get_parallel.c Normal file
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@ -0,0 +1,52 @@
/*****************************************************************************
Copyright (c) 2013 Martin Koehler, grisuthedragon@users.github.com
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the ISCAS 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 OWNER 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 "common.h"
#if defined(USE_OPENMP)
static int parallel = 2 ;
#elif defined(SMP_SERVER)
static int parallel = 1;
#else
static int parallel = 0;
#endif
int CNAME() {
return parallel;
}
int NAME() {
return parallel;
}

4
exports/gensymbol
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@ -74,11 +74,11 @@
@misc_no_underscore_objs = (
openblas_set_num_threads, goto_set_num_threads,
openblas_get_config,
openblas_get_config, openblas_get_parallel
);
@misc_underscore_objs = (
openblas_set_num_threads,
openblas_set_num_threads,openblas_get_parallel
);
@lapackobjs = (

18
test/get_threading_model.c Normal file
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@ -0,0 +1,18 @@
#include "../cblas.h"
int main() {
int th_model = openblas_get_parallel();
switch(th_model) {
case OPENBLAS_SEQUENTIAL:
printf("OpenBLAS is compiled sequentially.\n");
break;
case OPENBLAS_THREAD:
printf("OpenBLAS is compiled using the normal threading model\n");
break;
case OPENBLAS_OPENMP:
printf("OpenBLAS is compiled using OpenMP\n");
break;
}
return 0;
}