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BaseIO: Added "EigenResizeCounter" to keep track of any allocations/deallocations to Eigen tensors during readback. On read, if the tensor is resized, EigenResizeCounter += delta memory (in bytes)

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Michael Marshall 2021-05-31 12:49:56 +01:00
parent 76af169f05
commit 0a4e0b49a0
2 changed files with 11 additions and 0 deletions
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8
Grid/serialisation/BaseIO.h
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@ -30,6 +30,7 @@ Author: Guido Cossu <guido.cossu@ed.ac.uk>
#ifndef GRID_SERIALISATION_ABSTRACT_READER_H
#define GRID_SERIALISATION_ABSTRACT_READER_H
#include <atomic>
#include <type_traits>
#include <Grid/tensors/Tensors.h>
#include <Grid/serialisation/VectorUtils.h>
@ -110,6 +111,10 @@ namespace Grid {
template <typename ET>
inline typename std::enable_if<is_tensor_of_container<ET>::value, typename Traits<ET>::scalar_type *>::type
getFirstScalar(ET &eigenTensor) { return eigenTensor.data()->begin(); }
// Counter for resized EigenTensors (poor man's substitute for allocator)
// Defined in BinaryIO.cc
extern std::atomic_uint64_t EigenResizeCounter;
}
// Abstract writer/reader classes ////////////////////////////////////////////
@ -497,8 +502,11 @@ namespace Grid {
typename std::enable_if<EigenIO::is_tensor_variable<ETensor>::value, void>::type
Reader<T>::Reshape(ETensor &t, const std::array<typename ETensor::Index, ETensor::NumDimensions> &dims )
{
typename ETensor::Index before = t.size();
//t.reshape( dims );
t.resize( dims );
uint64_t diff = static_cast<uint64_t>(( t.size() - before ) * sizeof(typename ETensor::Scalar));
EigenIO::EigenResizeCounter.fetch_add(diff, std::memory_order_relaxed);
}
template <typename T>

3
Grid/serialisation/BinaryIO.cc
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@ -30,6 +30,9 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
NAMESPACE_BEGIN(Grid);
// Declared in BaseIO.h
std::atomic_uint64_t EigenIO::EigenResizeCounter(0);
// Writer implementation ///////////////////////////////////////////////////////
BinaryWriter::BinaryWriter(const std::string &fileName)
: file_(fileName, std::ios::binary|std::ios::out)