You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.0 KiB
Plaintext
79 lines
2.0 KiB
Plaintext
/*
|
|
* spGPU - Sparse matrices on GPU library.
|
|
*
|
|
* Copyright (C) 2010 - 2012
|
|
* Davide Barbieri - University of Rome Tor Vergata
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 3 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include "cudadebug.h"
|
|
#include "cudalang.h"
|
|
#include <cuda_runtime.h>
|
|
|
|
extern "C"
|
|
{
|
|
#include "core.h"
|
|
#include "vector.h"
|
|
int getGPUMultiProcessors();
|
|
int getGPUMaxThreadsPerMP();
|
|
}
|
|
|
|
|
|
#include "debug.h"
|
|
|
|
#define BLOCK_SIZE 512
|
|
|
|
__global__ void spgpuSxyzw_krn(int n, float a, float b,
|
|
float c, float d,
|
|
float e, float f,
|
|
float * x, float *y,
|
|
float *z, float *w)
|
|
{
|
|
int id = threadIdx.x + BLOCK_SIZE*blockIdx.x;
|
|
unsigned int gridSize = blockDim.x * gridDim.x;
|
|
float ty, tz;
|
|
for ( ; id < n; id +=gridSize)
|
|
//if (id,n)
|
|
{
|
|
|
|
ty = PREC_FADD(PREC_FMUL(a, x[id]), PREC_FMUL(b,y[id]));
|
|
tz = PREC_FADD(PREC_FMUL(c, ty), PREC_FMUL(d,z[id]));
|
|
w[id] = PREC_FADD(PREC_FMUL(e, tz), PREC_FMUL(f,w[id]));
|
|
y[id] = ty;
|
|
z[id] = tz;
|
|
}
|
|
}
|
|
|
|
|
|
void spgpuSxyzw(spgpuHandle_t handle,
|
|
int n,
|
|
float a, float b,
|
|
float c, float d,
|
|
float e, float f,
|
|
__device float * x,
|
|
__device float * y,
|
|
__device float * z,
|
|
__device float *w)
|
|
{
|
|
int msize = (n+BLOCK_SIZE-1)/BLOCK_SIZE;
|
|
int num_mp, max_threads_mp, num_blocks_mp, num_blocks;
|
|
dim3 block(BLOCK_SIZE);
|
|
num_mp = getGPUMultiProcessors();
|
|
max_threads_mp = getGPUMaxThreadsPerMP();
|
|
num_blocks_mp = max_threads_mp/BLOCK_SIZE;
|
|
num_blocks = num_blocks_mp*num_mp;
|
|
dim3 grid(num_blocks);
|
|
|
|
spgpuSxyzw_krn<<<grid, block, 0, handle->currentStream>>>(n, a,b,c,d,e,f,
|
|
x, y, z,w);
|
|
}
|
|
|