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Anthony Scemama 2023-07-16 17:27:14 +02:00
parent 5cec1b8a0c
commit ed440c16a2
1 changed files with 157 additions and 115 deletions
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74
devel/ccsd_gpu/gpu.c
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@ -1,9 +1,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <omp.h>
#include <cublas_v2.h>
#include <cuda_runtime.h>
#define NGPUS 2
#define BLOCK_SIZE 16
void dgemm_(char*, char*, int*, int*, int*, double*, double*, int*, double*, int*,
@ -71,47 +72,79 @@ void compute_r2_space_chol_gpu(const int nO, const int nV, const int cholesky_mo
double* B;
double* C;
cublasHandle_t handle;
cublasCreate(&handle);
double* d_taus[NGPUS];
double* d_r2s[NGPUS];
double* d_cc_space_v_vv_chols[NGPUS];
double* d_cc_space_v_vo_chols[NGPUS];
double* d_t1s[NGPUS];
double* d_tmp_ccs[NGPUS];
cublasHandle_t handles[NGPUS];
#pragma omp parallel
{
int ithread = omp_get_thread_num();
int igpu = ithread % NGPUS;
cudaSetDevice(igpu);
if (ithread < NGPUS) {
cublasCreate(&handles[ithread]);
}
#pragma omp barrier
cublasHandle_t handle = handles[igpu];
double* d_tau;
double* d_r2;
double* d_cc_space_v_vv_chol;
double* d_cc_space_v_vo_chol;
double* d_t1;
double* d_tmp_cc;
if (ithread < NGPUS) {
lda = nO * nO;
cudaMalloc((void **)&d_tau, lda * nV * nV * sizeof(double));
cublasSetMatrix(nO*nO, nV*nV, sizeof(double), tau, lda, d_tau, lda);
d_taus[igpu] = d_tau;
double* d_r2;
lda = nO * nO;
cudaMalloc((void **)&d_r2, lda * nV * nV * sizeof(double));
d_r2s[igpu] = d_r2;
double* d_cc_space_v_vv_chol;
lda = cholesky_mo_num * nV;
cudaMalloc((void **)&d_cc_space_v_vv_chol, lda * nV * sizeof(double));
cublasSetMatrix(cholesky_mo_num*nV, nV, sizeof(double), cc_space_v_vv_chol, lda, d_cc_space_v_vv_chol, lda);
d_cc_space_v_vv_chols[igpu] = d_cc_space_v_vv_chol;
double* d_cc_space_v_vo_chol;
lda = cholesky_mo_num * nV;
cudaMalloc((void **)&d_cc_space_v_vo_chol, lda * nO * sizeof(double));
cublasSetMatrix(cholesky_mo_num*nV, nO, sizeof(double), cc_space_v_vo_chol, lda, d_cc_space_v_vo_chol, lda);
d_cc_space_v_vo_chols[igpu] = d_cc_space_v_vo_chol;
double* d_t1;
lda = nO;
cudaMalloc((void **)&d_t1, nO * nV * sizeof(double));
cublasSetMatrix(nO, nV, sizeof(double), t1, lda, d_t1, lda);
d_t1s[igpu] = d_t1;
double* d_tmp_cc;
lda = cholesky_mo_num * nV;
cudaMalloc((void **)&d_tmp_cc, lda * nV * sizeof(double));
d_tmp_ccs[igpu] = d_tmp_cc;
alpha=1.0; beta=0.0;
m=cholesky_mo_num*nV; n=nV; k=nO;
A = d_cc_space_v_vo_chol; B = d_t1; C = d_tmp_cc;
cublasDgemm(handle, CUBLAS_OP_N, CUBLAS_OP_N, m, n, k, &alpha, A, m, B, k, &beta, C, m);
cublasDestroy(handle);
}
#pragma omp parallel
{
cublasHandle_t handle;
cublasCreate(&handle);
#pragma omp barrier
d_tau = d_taus[igpu] ;
d_r2 = d_r2s[igpu] ;
d_cc_space_v_vv_chol = d_cc_space_v_vv_chols[igpu] ;
d_cc_space_v_vo_chol = d_cc_space_v_vo_chols[igpu] ;
d_t1 = d_t1s[igpu] ;
d_tmp_cc = d_tmp_ccs[igpu] ;
double* d_tmp_cc2;
cudaMalloc((void **)&d_tmp_cc2, cholesky_mo_num*nV*sizeof(double));
@ -176,23 +209,32 @@ void compute_r2_space_chol_gpu(const int nO, const int nV, const int cholesky_mo
}
}
cublasDestroy(handle);
}
cudaFree(d_tmpB1);
cudaFree(d_B1);
cudaFree(d_tmp_cc2);
if (igpu < NGPUS) {
cudaFree(d_cc_space_v_vo_chol);
cudaFree(d_cc_space_v_vv_chol);
cudaFree(d_tau);
cudaFree(d_t1);
cudaFree(d_tmp_cc);
double * r2_tmp = malloc(nO*nO*nV*nV*sizeof(double));
lda=nO*nO;
cublasGetMatrix(nO*nO, nV*nV, sizeof(double), d_r2, lda, r2_tmp, lda);
#pragma omp critical
{
for (size_t i=0 ; i<nO*nO*nV*nV ; ++i) {
r2[i] += r2_tmp[i];
}
}
free(r2_tmp);
cudaFree(d_r2);
cublasDestroy(handle);
}
}
}