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correctly calculate batch size
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parent
eeb18f33cd
commit
52dcfdfce5
11
src/sgd.cu
11
src/sgd.cu
@ -39,10 +39,12 @@ void SGD::Run()
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for (size_t numEpoch = 0; numEpoch < epochs_; ++numEpoch) {
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std::cerr << "Starting epoch #" << numEpoch << std::endl;
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size_t startId = 0;
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size_t endId = startId + maxBatchSize_;
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while (endId < numExamples) {
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PrepareBatch(startId, endId, maxBatchSize_, shuffle, xt, yt);
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while (startId < numExamples) {
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size_t batchSize = std::min(maxBatchSize_, numExamples - startId);
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size_t endId = startId + batchSize;
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PrepareBatch(startId, endId, batchSize, shuffle, xt, yt);
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*inX_ = xt;
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*inY_ = yt;
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@ -52,7 +54,6 @@ void SGD::Run()
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UpdateModel();
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startId += maxBatchSize_;
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endId += maxBatchSize_;
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}
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}
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}
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@ -86,6 +87,7 @@ void SGD::PrepareBatch(
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std::vector<float> x(batchSize * numFeatures_);
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std::vector<float> y(batchSize * numClasses_);
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//cerr << "batchSize=" << batchSize << endl;
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/*
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cerr << "startId=" << startId
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<< " " << endId
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@ -116,6 +118,7 @@ void SGD::PrepareBatch(
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<< " " << startYDataId << "-" << endYDataId
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<< endl;
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*/
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std::copy(xData_.begin() + startXDataId,
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xData_.begin() + endXDataId,
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x.begin() + startXId);
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