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crossbar.h
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#ifndef _CROSSBAR_H
#define _CROSSBAR_H
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <omp.h>
#include <random>
#include "config.h"
#include "../../intel/compilers_and_libraries_2019.3.199/linux/mkl/include/mkl.h"
#include "../../intel/compilers_and_libraries_2019.3.199/linux/mkl/include/mkl_vsl.h"
#include "../../intel/compilers_and_libraries_2019.3.199/linux/mkl/examples/vslc/source/errcheck.inc"
using namespace std;
#define LAYER 19
typedef struct Crossbar
{
float *std_d;
/* int CB_l;
int CB_w;
int CB_n;
*/ float *CB_cell[LAYER+1]; // # of layers, start from 1
float *input [LAYER+1];
float *output [LAYER+1];
float *CB_std [LAYER+1];
float *CB_comp[LAYER+1];
int sizes [LAYER+1][3];
float **a_array ;
float **b_array ;
float **c_array ;
VSLStreamStatePtr stream;
VSLStreamStatePtr streamS[56]; // # of max cpu cores
int S; // # of omp parallel cpu cores
float * noise;
// Crossbar(){}
Crossbar(/* int n, int l, int w */ ){
/* CB_n = n;
CB_l = l;
CB_w = w;
*/ int sizes_tmp[LAYER+1][3] = {
0,0,0,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W, // 5
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W, //10
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W, //15
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W_512,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L, CROSSBAR_W_4096,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L_4608, CROSSBAR_W_2048,
(AD_WIDTH/DA_WIDTH), CROSSBAR_L_2304, CROSSBAR_W,
};
memcpy( & sizes[0][0], &sizes_tmp[0][0], sizeof( sizes) );
CB_cell[0] = CB_std[0] = input[0] = output[0] = CB_comp[0] = NULL;
int max_noise = 0;
for(int i=1; i<=LAYER; i++)
{
CB_cell[i] = new float[ sizes[i][1] * sizes[i][2] ];
CB_std [i] = new float[ sizes[i][1] * sizes[i][2] ];
CB_comp[i] = new float[ sizes[i][1] * sizes[i][2] ];
input [i] = new float[ sizes[i][0] * sizes[i][1] ];
output [i] = new float[ sizes[i][0] * sizes[i][2] ];
max_noise += sizes[i][1] * sizes[i][2];
}
a_array=new float*[ LAYER ]; // A
b_array=new float*[ LAYER ]; // B
c_array=new float*[ LAYER ]; // Ca
/***** Initialize noise *****/
#define SEED 10007
#define BRNG VSL_BRNG_MCG31
#define METHOD VSL_RNG_METHOD_GAUSSIAN_ICDF
int errcode = vslNewStream (&stream, BRNG, SEED);
CheckVslError (errcode);
noise = new float[ max_noise ] ;
S = omp_get_max_threads() ;
for (int i = 0; i < S; i++)
{
errcode = vslCopyStream (&streamS[i], stream);
CheckVslError (errcode);
// errcode = vslSkipAheadStream (streamS[i], (long long) (i * NS));
// CheckVslError (errcode);
// need to exec later
}
}
~Crossbar(){
for (int i=1;i<=LAYER;i++)
{
delete []CB_cell[i];
delete []CB_std [i];
delete []CB_comp[i];
delete []input [i];
delete []output [i];
}
delete []a_array;
delete []b_array;
delete []c_array;
int errcode = vslDeleteStream (&stream);
CheckVslError (errcode);
}
void init(){
get_std();
}
void get_std(){
float max_conductance = 40; // 25k ohm
float soso = 1/ max_conductance;
for (int i=1 ; i<=LAYER ;i++)
for(int j=0; j< sizes[i][1] * sizes[i][2] ; j++) {
float tmp = fabsf( CB_cell[i][j] );
float tmp2= (tmp * max_conductance + 4);
CB_std[i][j] = (-0.0006034 * (tmp2) * (tmp2) + 0.06184 * (tmp2) + 0.7240) * soso ;
// (-0.0006034 * (tmp * max_conductance + 4) * (tmp * max_conductance + 4) + 0.06184 * (tmp * max_conductance + 4) + 0.7240) / max_conductance;
}
/*
for (int i = 0; i < CB_w; ++i) {
for (int j = 0; j < CB_l; ++j) {
float tmp = fabsf(CB_cell[i*CB_l+j]);
CB_std[i*CB_l+j] = (-0.0006034 * (tmp * max_conductance + 4) * (tmp * max_conductance + 4)
+ 0.06184 * (tmp * max_conductance + 4) + 0.7240) / max_conductance;
}
}
*/
}
void run(){
extern int use_noise;
extern int layer_comp_who[LAYER + 1]; // 15 conv and 4 linear crossbar total, but define all
if ( use_noise) {
/******** generate noise ************/
{
int num_noise = 0;
for(int i=1; i<=LAYER; i++)
if (layer_comp_who[i] )
{
num_noise += sizes[i][1] * sizes[i][2];
}
int NS = num_noise / S;
for(int i=0;i <S; i++)
{
int errcode = vslSkipAheadStream (streamS[i], (long long) (i * NS));
CheckVslError (errcode);
}
#pragma omp parallel for
for (int i = 0; i < S; i++) // 并行生成随机数
{
int errcode =
vsRngGaussian (METHOD, streamS[i], NS, &noise[i * NS], 0, 1);
CheckVslError (errcode);
}
}
/*********** add noise ****************/
{
int k=0;
for(int i=1; i<=LAYER; i++)
if (layer_comp_who[i] )
for(int j=0; j< sizes[i][1] * sizes[i][2]; j++)
{
CB_comp[i][j] = CB_cell[i][j] + CB_std[i][j] * noise[k];
k++;
}
}
}
extern int batch_num;
if ( batch_num ) {
int tot_conv=0;
for(int i=1;i<=15;i++) // total 15 conv layers
if (layer_comp_who[i] )
{
a_array[ tot_conv ] = input[i];
b_array[ tot_conv ] = use_noise ? CB_comp[i] : CB_cell[i];
c_array[ tot_conv ] = output[i];
tot_conv ++;
}
{ // batch gemm
CBLAS_LAYOUT layout = CblasRowMajor;
CBLAS_TRANSPOSE trans_tmp =CblasNoTrans, *transA=&trans_tmp , *transB=&trans_tmp;
float alpha_tmp=1, *alpha=&alpha_tmp;
float beta_tmp=0 , *beta = &beta_tmp;
int * sizea = & sizes[ 1 ][0]; // 1-15 have the same sizes, so choose 1 as example
int * sizeb = & sizes[ 1 ][1];
int * sizec = & sizes[ 1 ][2];
int grp_sizes[1];
grp_sizes[0] = tot_conv ;
cblas_sgemm_batch(layout, transA, transB, sizea, sizec, sizeb, alpha,
(const float **) a_array, sizeb, (const float **) b_array, sizec,
beta, c_array, sizec, 1, grp_sizes);
} // batch gemm
for(int i=16;i<=LAYER;i++) // total 15 conv layers
if ( layer_comp_who[i] )
{
CBLAS_LAYOUT layout = CblasRowMajor;
CBLAS_TRANSPOSE transA = CblasNoTrans, transB = CblasNoTrans;
float alpha = 1, beta = 0;
int sizea = sizes[i][0];
int sizeb = sizes[i][1];
int sizec = sizes[i][2];
cblas_sgemm (layout, transA, transB, sizea, sizec, sizeb,
alpha, input[i], sizeb,
CB_cell[i], sizec, beta,
output[i], sizec);
}
}
else // BATCH_MATMUL
{
for(int i=1;i<=LAYER;i++)
if ( layer_comp_who[i] )
{
CBLAS_LAYOUT layout = CblasRowMajor;
CBLAS_TRANSPOSE transA = CblasNoTrans, transB = CblasNoTrans;
float alpha = 1, beta = 0;
int sizea = sizes[i][0];
int sizeb = sizes[i][1];
int sizec = sizes[i][2];
cblas_sgemm (layout, transA, transB, sizea, sizec, sizeb,
alpha, input[i], sizeb,
CB_cell[i], sizec, beta,
output[i], sizec);
}
} // BATCH_MATMUL
}
}CROSSBAR;
CROSSBAR entire_cb /* ( 1, ENTIRE_L, ENTIRE_W ) */ ;
#endif // !_CROSSBAR_H