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This commit is contained in:
Marcin Junczys-Dowmunt 2016-09-16 14:05:39 +02:00
parent 036284d39c
commit 5de53c46e5
5 changed files with 134 additions and 2 deletions
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2
src/chainable.h
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@ -17,6 +17,8 @@ struct Chainable {
virtual void set_zero_adjoint() { }
virtual void allocate(size_t) = 0;
virtual std::string graphviz() = 0;
virtual const Shape& shape() = 0;
virtual DataType &val() = 0;

12
src/expression_graph.h
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@ -50,6 +50,18 @@ class ExpressionGraph {
v->forward();
}
std::string graphviz() {
std::stringstream ss;
ss << "digraph ExpressionGraph {" << std::endl;
ss << "rankdir=BT" << std::endl;
typedef typename ChainableStack::reverse_iterator It;
for(It it = stack_->rbegin(); it != stack_->rend(); ++it)
ss << (*it)->graphviz();
ss << "}" << std::endl;
return ss.str();
}
void backward() {
for(auto&& v : *stack_)
v->set_zero_adjoint();

116
src/node_operators.h
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@ -22,6 +22,13 @@ struct InputNode : public Node {
void forward() {}
void backward() {}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"parallelogram\", label=\"input\", style=\"filled\", fillcolor=\"lawngreen\"]" << std::endl << std::endl;
return ss.str();
};
};
struct ConstantNode : public Node {
@ -35,6 +42,13 @@ struct ConstantNode : public Node {
void forward() {}
void backward() {}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"diamond\", label=\"const\"]" << std::endl << std::endl;
return ss.str();
};
};
struct ParamNode : public Node {
@ -60,6 +74,13 @@ struct ParamNode : public Node {
}
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"hexagon\", label=\"param\", style=\"filled\", fillcolor=\"orangered\"]" << std::endl << std::endl;
return ss.str();
};
private:
std::function<void(Tensor)> init_;
bool initialized_;
@ -89,6 +110,14 @@ struct LogitNodeOp : public UnaryNodeOp {
Element(_1 += _2 * _3 * (1 - _3),
a_->grad(), adj_, val_);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"logit\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct TanhNodeOp : public UnaryNodeOp {
@ -105,6 +134,14 @@ struct TanhNodeOp : public UnaryNodeOp {
Element(_1 += _2 * (1 - _3 * _3),
a_->grad(), adj_, val_);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"tanh\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
// @TODO, make this numerically safe(r):
@ -131,6 +168,14 @@ struct SoftmaxNodeOp : public UnaryNodeOp {
SubtractMean(&result, val_);
Element(_1 += _2 * _3, a_->grad(), val_, result);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"softmax\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct LogNodeOp : public UnaryNodeOp {
@ -146,6 +191,14 @@ struct LogNodeOp : public UnaryNodeOp {
Element(_1 += _2 * 1.f / _3,
a_->grad(), adj_, a_->val());
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"log\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct ExpNodeOp : public UnaryNodeOp {
@ -161,6 +214,14 @@ struct ExpNodeOp : public UnaryNodeOp {
Element(_1 += _2 * Exp(_3),
a_->grad(), adj_, a_->val());
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"exp\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct NegNodeOp : public UnaryNodeOp {
@ -175,6 +236,14 @@ struct NegNodeOp : public UnaryNodeOp {
void backward() {
Element(_1 += -_2, a_->grad(), adj_);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"-\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
/******************************************************/
@ -220,6 +289,15 @@ struct DotNodeOp : public BinaryNodeOp {
Prod(a_->grad(), adj_, b_->val(), false, true, 1.0);
Prod(b_->grad(), a_->val(), adj_, true, false, 1.0);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"×\", style=\"filled\", fillcolor=\"orange\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl;
ss << "\"" << &*b_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct PlusNodeOp : public BinaryNodeOp {
@ -238,6 +316,15 @@ struct PlusNodeOp : public BinaryNodeOp {
Element(_1 += _2,
b_->grad(), adj_);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"+\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl;
ss << "\"" << &*b_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct MinusNodeOp : public BinaryNodeOp {
@ -256,6 +343,15 @@ struct MinusNodeOp : public BinaryNodeOp {
Element(_1 -= _2,
b_->grad(), adj_);
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"-\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl;
ss << "\"" << &*b_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct MultNodeOp : public BinaryNodeOp {
@ -274,6 +370,15 @@ struct MultNodeOp : public BinaryNodeOp {
Element(_1 += _2 * _3,
b_->grad(), adj_, a_->val());
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"•\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << &*a_ << "\" -> \"" << this << "\"" << std::endl;
ss << "\"" << &*b_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
struct DivNodeOp : public BinaryNodeOp {
@ -291,7 +396,16 @@ struct DivNodeOp : public BinaryNodeOp {
a_->grad(), adj_, b_->val());
Element(_1 -= _2 * _3 / (_4 * _4),
b_->grad(), adj_, a_->val(), b_->val());
}
}
virtual std::string graphviz() {
std::stringstream ss;
ss << "\"" << this << "\" [shape=\"box\", label=\"÷\", style=\"filled\", fillcolor=\"yellow\"]" << std::endl;
ss << "\"" << a_ << "\" -> \"" << this << "\"" << std::endl;
ss << "\"" << b_ << "\" -> \"" << this << "\"" << std::endl << std::endl;
return ss.str();
};
};
}

2
src/test.cu
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@ -75,6 +75,8 @@ int main(int argc, char** argv) {
Y[t] = Yt;
}
std::cout << g.graphviz() << std::endl;
g.forward(batch_size);
g.backward();

4
src/validate_mnist.cu
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@ -47,7 +47,7 @@ ExpressionGraph build_graph() {
int main(int argc, char** argv) {
cudaSetDevice(1);
cudaSetDevice(0);
std::cerr << "Loading test set...";
std::vector<float> testImages = datasets::mnist::ReadImages("../examples/mnist/t10k-images-idx3-ubyte", BATCH_SIZE, IMAGE_SIZE);
@ -62,6 +62,8 @@ int main(int argc, char** argv) {
g["x"] = (xt << testImages);
g["y"] = (yt << testLabels);
std::cout << g.graphviz() << std::endl;
g.forward(BATCH_SIZE);
std::vector<float> results;