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Commit 0822a657 authored by Tobias Winchen's avatar Tobias Winchen
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Deleted obsolete header

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psrdada_cpp/effelsberg/edd/GatedStokesSpectrometer.cuh deleted 100644 → 0
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#ifndef PSRDADA_CPP_EFFELSBERG_EDD_GATEDSPECTROMETER_HPP
#define PSRDADA_CPP_EFFELSBERG_EDD_GATEDSPECTROMETER_HPP
#include "psrdada_cpp/effelsberg/edd/Unpacker.cuh"
#include "psrdada_cpp/raw_bytes.hpp"
#include "psrdada_cpp/cuda_utils.hpp"
#include "psrdada_cpp/double_device_buffer.cuh"
#include "psrdada_cpp/double_host_buffer.cuh"
#include "psrdada_cpp/effelsberg/edd/DetectorAccumulator.cuh"
#include "psrdada_cpp/effelsberg/edd/DadaBufferLayout.hpp"
#include "thrust/device_vector.h"
#include "cufft.h"
#include "cublas_v2.h"
namespace psrdada_cpp {
namespace effelsberg {
namespace edd {
#define BIT_MASK(bit) (1uL << (bit))
#define SET_BIT(value, bit) ((value) |= BIT_MASK(bit))
#define CLEAR_BIT(value, bit) ((value) &= ~BIT_MASK(bit))
#define TEST_BIT(value, bit) (((value)&BIT_MASK(bit)) ? 1 : 0)
typedef unsigned long long int uint64_cu;
static_assert(sizeof(uint64_cu) == sizeof(uint64_t), "Long long int not of 64 bit! This is problematic for CUDA!");
/**
@class GatedStokesSpectrometer
@brief Split data into two streams and create integrated spectra depending on
bit set in side channel data.
*/
template <class HandlerType> class GatedStokesSpectrometer {
public:
public:
/**
* @brief Constructor
*
* @param buffer_bytes A RawBytes object wrapping a DADA header buffer
* @param nSideChannels Number of side channel items in the data stream,
* @param selectedSideChannel Side channel item used for gating
* @param selectedBit bit of side channel item used for gating
* @param speadHeapSize Size of the spead heap block.
* @param fftLength Size of the FFT
* @param naccumulate Number of samples to integrate in the individual
* FFT bins
* @param nbits Bit depth of the sampled signal
* @param handler Output handler
*
*/
GatedStokesSpectrometer(const DadaBufferLayout &bufferLayout,
std::size_t selectedSideChannel, std::size_t selectedBit,
std::size_t fft_length,
std::size_t naccumulate, std::size_t nbits,
HandlerType &handler);
~GatedStokesSpectrometer();
/**
* @brief A callback to be called on connection
* to a ring buffer.
*
* @details The first available header block in the
* in the ring buffer is provided as an argument.
* It is here that header parameters could be read
* if desired.
*
* @param block A RawBytes object wrapping a DADA header buffer
*/
void init(RawBytes &block);
/**
* @brief A callback to be called on acqusition of a new
* data block.
*
* @param block A RawBytes object wrapping a DADA data buffer output
* are the integrated specttra with/without bit set.
*/
bool operator()(RawBytes &block);
private:
// gate the data and fft data per gate
void gated_fft(PolarizationData &data,
thrust::device_vector<uint64_cu> &_noOfBitSetsIn_G0,
thrust::device_vector<uint64_cu> &_noOfBitSetsIn_G1);
private:
DadaBufferLayout _dadaBufferLayout;
std::size_t _fft_length;
std::size_t _naccumulate;
std::size_t _nbits;
std::size_t _selectedSideChannel;
std::size_t _selectedBit;
std::size_t _batch;
std::size_t _nsamps_per_output_spectra;
std::size_t _nsamps_per_buffer;
std::size_t _nsamps_per_heap;
HandlerType &_handler;
cufftHandle _fft_plan;
uint64_t _nchans;
uint64_t _call_count;
double _processing_efficiency;
std::unique_ptr<Unpacker> _unpacker;
// Input data and per pol intermediate data
PolarizationData polarization0, polarization1;
// Output data
StokesOutput stokes_G0, stokes_G1;
DoublePinnedHostBuffer<char> _host_power_db;
// Temporary processing block
// ToDo: Use inplace FFT to avoid temporary coltage array
thrust::device_vector<UnpackedVoltageType> _unpacked_voltage_G0;
thrust::device_vector<UnpackedVoltageType> _unpacked_voltage_G1;
cudaStream_t _h2d_stream;
cudaStream_t _proc_stream;
cudaStream_t _d2h_stream;
};
/**
* @brief Splits the input data depending on a bit set into two arrays.
*
* @details The resulting gaps are filled with a given baseline value in the other stream.
*
* @param GO Input data. Data is set to the baseline value if corresponding
* sideChannelData bit at bitpos os set.
* @param G1 Data in this array is set to the baseline value if corresponding
* sideChannelData bit at bitpos is not set.
* @param sideChannelData noOfSideChannels items per block of heapSize
* bytes in the input data.
* @param N lebgth of the input/output arrays G0.
* @param heapsize Size of the blocks for which there is an entry in the
sideChannelData.
* @param bitpos Position of the bit to evaluate for processing.
* @param noOfSideChannels Number of side channels items per block of
* data.
* @param selectedSideChannel No. of side channel item to be eveluated.
0 <= selectedSideChannel < noOfSideChannels.
* @param stats_G0 No. of sampels contributing to G0, accounting also
* for loat heaps
* @param stats_G1 No. of sampels contributing to G1, accounting also
* for loat heaps
*/
__global__ void gating(float *G0, float *G1, const int64_t *sideChannelData,
size_t N, size_t heapSize, size_t bitpos,
size_t noOfSideChannels, size_t selectedSideChannel,
const float* __restrict__ _baseLineG0,
const float* __restrict__ _baseLineG1,
float* __restrict__ baseLineNG0,
float* __restrict__ baseLineNG1,
uint64_cu* stats_G0,
uint64_cu* stats_G1);
/**
* @brief calculate stokes IQUV from two complex valuies for each polarization
*/
//__host__ __device__ void stokes_IQUV(const float2 &p1, const float2 &p2, float &I, float &Q, float &U, float &V);
__host__ __device__ void stokes_IQUV(const float2 &p1, const float2 &p2, float &I, float &Q, float &U, float &V)
{
I = fabs(p1.x*p1.x + p1.y * p1.y) + fabs(p2.x*p2.x + p2.y * p2.y);
Q = fabs(p1.x*p1.x + p1.y * p1.y) - fabs(p2.x*p2.x + p2.y * p2.y);
U = 2 * (p1.x*p2.x + p1.y * p2.y);
V = -2 * (p1.y*p2.x - p1.x * p2.y);
}
/**
* @brief calculate stokes IQUV spectra pol1, pol2 are arrays of naccumulate
* complex spectra for individual polarizations
*/
__global__ void stokes_accumulate(float2 const __restrict__ *pol1,
float2 const __restrict__ *pol2, float *I, float* Q, float *U, float*V,
int nchans, int naccumulate)
{
for (size_t i = blockIdx.x * blockDim.x + threadIdx.x; (i < nchans);
i += blockDim.x * gridDim.x)
{
float rI = 0;
float rQ = 0;
float rU = 0;
float rV = 0;
for (int k=0; k < naccumulate; k++)
{
const float2 p1 = pol1[i + k * nchans];
const float2 p2 = pol2[i + k * nchans];
rI += fabs(p1.x * p1.x + p1.y * p1.y) + fabs(p2.x * p2.x + p2.y * p2.y);
rQ += fabs(p1.x * p1.x + p1.y * p1.y) - fabs(p2.x * p2.x + p2.y * p2.y);
rU += 2.f * (p1.x * p2.x + p1.y * p2.y);
rV += -2.f * (p1.y * p2.x - p1.x * p2.y);
}
I[i] += rI;
Q[i] += rQ;
U[i] += rU;
V[i] += rV;
}
}
} // edd
} // effelsberg
} // psrdada_cpp
#include "psrdada_cpp/effelsberg/edd/detail/GatedStokesSpectrometer.cu"
#endif //PSRDADA_CPP_EFFELSBERG_EDD_GATEDSPECTROMETER_HPP
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