OpenBLAS/driver/level3/gemm_batch_thread.c

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#include "common.h"

void openblas_warning(int verbose, const char * msg);

#ifdef SMALL_MATRIX_OPT
static int inner_small_matrix_thread(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, IFLOAT *sa, IFLOAT *sb, BLASLONG mypos){
  int routine_mode;
#ifndef COMPLEX
  int (*gemm_small_kernel)(BLASLONG, BLASLONG, BLASLONG, FLOAT *, BLASLONG, FLOAT ,FLOAT *, BLASLONG, FLOAT, FLOAT *, BLASLONG);
  int (*gemm_small_kernel_b0)(BLASLONG, BLASLONG, BLASLONG, FLOAT *, BLASLONG, FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG);
#else
  int (*zgemm_small_kernel)(BLASLONG, BLASLONG, BLASLONG, FLOAT *, BLASLONG, FLOAT , FLOAT, FLOAT *, BLASLONG, FLOAT , FLOAT, FLOAT *, BLASLONG);
  int (*zgemm_small_kernel_b0)(BLASLONG, BLASLONG, BLASLONG, FLOAT *, BLASLONG, FLOAT , FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG);
  FLOAT alpha[2], beta[2];
#endif
  routine_mode=args->routine_mode;
  if((routine_mode & BLAS_SMALL_B0_OPT) == BLAS_SMALL_B0_OPT){
#ifndef COMPLEX
    gemm_small_kernel_b0=args->routine;
    gemm_small_kernel_b0(args->m, args->n, args->k, args->a, args->lda, *(FLOAT *)(args->alpha), args->b, args->ldb, args->c, args->ldc);
#else
    zgemm_small_kernel_b0=args->routine;
    alpha[0] = *((FLOAT *)args -> alpha + 0);
    alpha[1] = *((FLOAT *)args -> alpha + 1);
    zgemm_small_kernel_b0(args->m, args->n, args->k, args->a, args->lda, alpha[0], alpha[1], args->b, args->ldb, args->c, args->ldc);
#endif
    return(0);
  }else if(routine_mode & BLAS_SMALL_OPT){
#ifndef COMPLEX
    gemm_small_kernel=args->routine;
    gemm_small_kernel(args->m, args->n, args->k, args->a, args->lda, *(FLOAT *)(args->alpha), args->b, args->ldb, *(FLOAT *)(args->beta), args->c, args->ldc);
#else
    zgemm_small_kernel=args->routine;
    alpha[0] = *((FLOAT *)args -> alpha + 0);
    alpha[1] = *((FLOAT *)args -> alpha + 1);
    beta[0] = *((FLOAT *)args -> beta + 0);
    beta[1] = *((FLOAT *)args -> beta + 1);
    zgemm_small_kernel(args->m, args->n, args->k, args->a, args->lda, alpha[0], alpha[1], args->b, args->ldb, beta[0], beta[1], args->c, args->ldc);
#endif    
    return(0);
  }
  return(1);
}
#endif

int CNAME(blas_arg_t * args_array, BLASLONG nums){
  XFLOAT *buffer;
  XFLOAT *sa, *sb;
  int nthreads=1;
  int (*routine)(blas_arg_t *, void *, void *, XFLOAT *, XFLOAT *, BLASLONG);
  int i=0, /*j,*/ current_nums;

#ifdef SMP
  blas_queue_t * queue=NULL;
#endif
  
  if(nums <=0 ) return 0;

  buffer = (XFLOAT *)blas_memory_alloc(0);
  sa = (XFLOAT *)((BLASLONG)buffer +GEMM_OFFSET_A);
  sb = (XFLOAT *)(((BLASLONG)sa + ((GEMM_P * GEMM_Q * COMPSIZE * SIZE + GEMM_ALIGN) & ~GEMM_ALIGN)) + GEMM_OFFSET_B);
  
#ifdef SMP
  nthreads=num_cpu_avail(3);

  if(nthreads==1){

#endif
    //single thread
    for(i=0; i<nums; i++){
      routine=args_array[i].routine;
#ifdef SMALL_MATRIX_OPT
      if(args_array[i].routine_mode & BLAS_SMALL_OPT){
	inner_small_matrix_thread(&args_array[i], NULL, NULL, NULL, NULL, 0);
      }else{
#endif      
	routine(&args_array[i], NULL, NULL, sa, sb, 0);
#ifdef SMALL_MATRIX_OPT
      }
#endif
    }
#ifdef SMP
  } else {
    //multi thread

    queue=(blas_queue_t *)malloc((nums+1) * sizeof(blas_queue_t));
    if(queue == NULL){
      openblas_warning(0, "memory alloc failed!\n");
      return(1);
    }
    for(i=0; i<nums; i++){
      queue[i].args=&args_array[i];
      queue[i].range_m=NULL;
      queue[i].range_n=NULL;
      queue[i].sa=NULL;
      queue[i].sb=NULL;
      queue[i].next=&queue[i+1];

      queue[i].mode=args_array[i].routine_mode;
      queue[i].routine=args_array[i].routine;
      
#ifdef SMALL_MATRIX_OPT
      if((args_array[i].routine_mode & BLAS_SMALL_B0_OPT) || (args_array[i].routine_mode & BLAS_SMALL_OPT)){
	queue[i].routine=inner_small_matrix_thread;
      }
#endif
    }
    
    for(i=0; i<nums; i+=nthreads){
      current_nums=((nums-i)>nthreads)? nthreads: (nums-i);

      queue[i].sa=sa;
      queue[i].sb=sb;
      queue[i+current_nums-1].next=NULL;
      
      exec_blas(current_nums, &queue[i]);
    }
    free(queue);
  }
#endif
  blas_memory_free(buffer);
  return 0;
}