gorgonia.org/gorgonia@v0.9.17/ops/nn/scratch_cuda.go (about)

     1  // +build cuda
     2  
     3  package nnops
     4  
     5  import (
     6  	"fmt"
     7  	"hash"
     8  
     9  	"github.com/chewxy/hm"
    10  	"gorgonia.org/gorgonia"
    11  	"gorgonia.org/tensor"
    12  )
    13  
    14  // gpuScratchOp is a dummy op. It exists so the VM is able to allocate spare memory.
    15  //
    16  // giving it a name makes it unique(r)
    17  type gpuScratchOp struct {
    18  	scratchOp
    19  }
    20  
    21  func (op *gpuScratchOp) Arity() int { return 0 }
    22  
    23  func (op *gpuScratchOp) Type() hm.Type {
    24  	if op.shape.IsScalar() {
    25  		return op.dt
    26  	}
    27  	tt := &gorgonia.TensorType{Dims: op.shape.Dims(), Of: op.dt}
    28  	return tt
    29  }
    30  
    31  func (op *gpuScratchOp) InferShape(...gorgonia.DimSizer) (tensor.Shape, error) { return op.shape, nil }
    32  func (op *gpuScratchOp) Do(...gorgonia.Value) (gorgonia.Value, error)          { panic("not implemented") }
    33  func (op *gpuScratchOp) ReturnsPtr() bool                                      { return true }
    34  func (op *gpuScratchOp) CallsExtern() bool                                     { return true }
    35  func (op *gpuScratchOp) OverwritesInput() int                                  { return -1 }
    36  func (op *gpuScratchOp) WriteHash(h hash.Hash) {
    37  	fmt.Fprintf(h, "CUDA Scratch %v of %v | %v", op.shape, op.dt, op.name)
    38  }
    39  func (op *gpuScratchOp) Hashcode() uint32 { return simpleHash(op) }
    40  func (op *gpuScratchOp) String() string {
    41  	return fmt.Sprintf("CUDA Scratch %v of %v | %v", op.shape, op.dt, op.name)
    42  }
    43  
    44  func (op *gpuScratchOp) CUDADo(extern gorgonia.External, dev gorgonia.Device, prealloc gorgonia.Value, inputs ...gorgonia.Value) (retVal gorgonia.Value, err error) {
    45  	return prealloc, nil
    46  }