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Merge ../Marian.hieu
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063dd8649e
@ -10,7 +10,7 @@ Expr::Expr(Chainable<Tensor>* chainable) : pimpl_(chainable) {}
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Expr::Expr(Float v) : pimpl_(new ConstantNode(keywords::value=v,
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keywords::shape={1,1})) {}
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Tensor Expr::val() {
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Tensor &Expr::val() {
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return pimpl_->val();
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}
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@ -15,7 +15,7 @@ class Expr {
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return *this;
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}
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Tensor val();
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Tensor &val();
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Tensor grad();
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void forward(size_t batchSize);
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@ -17,7 +17,7 @@ struct Chainable {
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virtual void allocate(size_t) = 0;
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virtual const Shape& shape() = 0;
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virtual DataType val() = 0;
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virtual DataType &val() = 0;
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virtual DataType grad() = 0;
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virtual void setVal(Tensor t) {
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UTIL_THROW2("Tensors can only be assigned to input nodes");
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@ -82,7 +82,7 @@ class Node : public Chainable<Tensor>,
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}
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}
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virtual Tensor val() {
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virtual Tensor &val() {
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UTIL_THROW_IF2(!val_, "Tensor has not been allocated");
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return val_;
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};
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@ -104,4 +104,4 @@ class Node : public Chainable<Tensor>,
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Tensor adj_;
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};
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}
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}
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@ -80,12 +80,12 @@ void Tensor::Load(const std::string &path)
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}
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strm.close();
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Load(hostData);
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Load(hostData.begin(), hostData.begin());
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}
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void Tensor::Load(const std::vector<float> &values)
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void Tensor::Load(const std::vector<float>::const_iterator &begin, const std::vector<float>::const_iterator &end)
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{
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pimpl_->set(values);
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pimpl_->set(begin, end);
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}
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}
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10
src/tensor.h
10
src/tensor.h
@ -158,11 +158,11 @@ class TensorImpl {
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thrust::fill(data_.begin(), data_.end(), value);
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}
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void set(const std::vector<Float> &values) {
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void set(const std::vector<float>::const_iterator &begin, const std::vector<float>::const_iterator &end) {
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size_t totSize = GetTotalSize(shape());
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std::cerr << "tensor size=" << totSize << " vector size=" << values.size() << std::endl;
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assert(totSize == values.size());
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thrust::copy(values.begin(), values.end(), data_.begin());
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//std::cerr << "tensor size=" << totSize << " vector size=" << values.size() << std::endl;
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//assert(totSize == values.size());
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thrust::copy(begin, end, data_.begin());
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}
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std::string Debug() const
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@ -275,7 +275,7 @@ class Tensor {
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}
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void Load(const std::string &path);
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void Load(const std::vector<float> &values);
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void Load(const std::vector<float>::const_iterator &begin, const std::vector<float>::const_iterator &end);
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};
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63
src/test.cu
63
src/test.cu
@ -12,6 +12,7 @@ int main(int argc, char** argv) {
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using namespace marian;
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using namespace keywords;
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const size_t BATCH_SIZE = 500;
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const size_t IMAGE_SIZE = 784;
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const size_t LABEL_SIZE = 10;
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@ -20,42 +21,62 @@ int main(int argc, char** argv) {
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Expr w = param(shape={IMAGE_SIZE, LABEL_SIZE}, name="W0");
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Expr b = param(shape={1, LABEL_SIZE}, name="b0");
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Expr z = dot(x, w) + b;
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Expr lr = softmax(z, axis=1, name="pred");
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Expr graph = -mean(sum(y * log(lr), axis=1), axis=0, name="cost");
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//cerr << "lr=" << Debug(lr.val().shape()) << endl;
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//cerr << "x=" << Debug(lr.val().shape()) << endl;
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int numofdata;
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vector<float> images = datasets::mnist::ReadImages("../examples/mnist/t10k-images-idx3-ubyte", numofdata, IMAGE_SIZE);
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vector<float> labels = datasets::mnist::ReadLabels("../examples/mnist/t10k-labels-idx1-ubyte", numofdata, LABEL_SIZE);
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//vector<float> images = datasets::mnist::ReadImages("../examples/mnist/t10k-images-idx3-ubyte", numofdata, IMAGE_SIZE);
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//vector<float> labels = datasets::mnist::ReadLabels("../examples/mnist/t10k-labels-idx1-ubyte", numofdata, LABEL_SIZE);
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vector<float> images = datasets::mnist::ReadImages("../examples/mnist/train-images-idx3-ubyte", numofdata, IMAGE_SIZE);
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vector<float> labels = datasets::mnist::ReadLabels("../examples/mnist/train-labels-idx1-ubyte", numofdata, LABEL_SIZE);
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cerr << "images=" << images.size() << " labels=" << labels.size() << endl;
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cerr << "numofdata=" << numofdata << endl;
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Tensor tx({numofdata, IMAGE_SIZE}, 1);
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Tensor ty({numofdata, LABEL_SIZE}, 1);
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size_t startInd = 0;
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size_t startIndData = 0;
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while (startInd < numofdata) {
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size_t batchSize = (startInd + BATCH_SIZE < numofdata) ? BATCH_SIZE : numofdata - startInd;
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cerr << "startInd=" << startInd
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<< " startIndData=" << startIndData
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<< " batchSize=" << batchSize << endl;
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tx.Load(images);
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ty.Load(labels);
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Tensor tx({numofdata, IMAGE_SIZE}, 1);
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Tensor ty({numofdata, LABEL_SIZE}, 1);
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cerr << "tx=" << Debug(tx.shape()) << endl;
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cerr << "ty=" << Debug(ty.shape()) << endl;
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tx.Load(images.begin() + startIndData, images.begin() + startIndData + batchSize * IMAGE_SIZE);
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ty.Load(labels.begin() + startInd, labels.begin() + startInd + batchSize);
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x = tx;
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y = ty;
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//cerr << "tx=" << Debug(tx.shape()) << endl;
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//cerr << "ty=" << Debug(ty.shape()) << endl;
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graph.forward(500);
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x = tx;
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y = ty;
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std::cerr << "z: " << Debug(z.val().shape()) << endl;
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std::cerr << "lr: " << Debug(lr.val().shape()) << endl;
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std::cerr << "Log-likelihood: " << Debug(graph.val().shape()) << endl ;
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cerr << "x=" << Debug(x.val().shape()) << endl;
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cerr << "y=" << Debug(y.val().shape()) << endl;
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//std::cerr << "scores=" << scores.val().Debug() << endl;
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std::cerr << "lr=" << lr.val().Debug() << endl;
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graph.backward();
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//std::cerr << graph["pred"].val()[0] << std::endl;
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graph.forward(batchSize);
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cerr << "w=" << Debug(w.val().shape()) << endl;
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cerr << "b=" << Debug(b.val().shape()) << endl;
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std::cerr << "z: " << Debug(z.val().shape()) << endl;
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std::cerr << "lr: " << Debug(lr.val().shape()) << endl;
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std::cerr << "Log-likelihood: " << Debug(graph.val().shape()) << endl ;
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//std::cerr << "scores=" << scores.val().Debug() << endl;
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std::cerr << "lr=" << lr.val().Debug() << endl;
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graph.backward();
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//std::cerr << graph["pred"].val()[0] << std::endl;
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startInd += batchSize;
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startIndData += batchSize * IMAGE_SIZE;
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}
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// XOR
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