tpglibs::AVXRunSumProcessor Class Reference

AVX signal processor: Calculates the running sum of the signal. More...

#include <AVXRunSumProcessor.hpp>

Inheritance diagram for tpglibs::AVXRunSumProcessor:

Collaboration diagram for tpglibs::AVXRunSumProcessor:

Public Member Functions
__m256i	process (const __m256i &signal) override
	Calculate and store the running sum.
void	configure (const nlohmann::json &config, const int16_t *plane_numbers) override
	Configures the R factor and S factor according to plane.
Public Member Functions inherited from tpglibs::AVXProcessor
Public Member Functions inherited from tpglibs::AbstractProcessor< __m256i >
virtual	~AbstractProcessor ()=default
void	set_next_processor (std::shared_ptr< AbstractProcessor< __m256i > > next_processor)
	Setter for next processor.

Private Attributes
__m256i	m_memory_factor
	The R factor in the model equation.
__m256i	m_scale_factor
	The S factor in the model equation.
__m256i	m_running_sum
	The RS in the model equation.

Additional Inherited Members
Public Types inherited from tpglibs::AbstractProcessor< __m256i >
using	signal_type_t
	Signal type to process on. General __m256i.

Detailed Description

AVX signal processor: Calculates the running sum of the signal.

Calculates the running sum of the signal with some factors. This tries to model the following equation: RS = R * RS + S * signal, where

• RS is the on-going running sum,
• R is the memory factor of the on-going running sum,
• S is the scale factor for the incoming signal to avoid overflowing,
• signal is the incoming signal.

Definition at line 26 of file AVXRunSumProcessor.hpp.

Member Function Documentation

configure()

void tpglibs::AVXRunSumProcessor::configure ( const nlohmann::json & config, const int16_t * plane_numbers )

overridevirtual

Configures the R factor and S factor according to plane.

Parameters

config	JSON of the R and S factors to use per plane.
plane_numbers	Array of plane numbers. Gives the channels to apply the R and S factors.

Implements tpglibs::AbstractProcessor< __m256i >.

Definition at line 15 of file AVXRunSumProcessor.cpp.

                                                                                           {
  int16_t memory_factors[16];
  int16_t config_memory[3] = {config["memory_factor_plane0"],
                              config["memory_factor_plane1"],
                              config["memory_factor_plane2"]};
  int16_t scale_factors[16];
  int16_t config_scale[3]  = {config["scale_factor_plane0"],
                              config["scale_factor_plane1"],
                              config["scale_factor_plane2"]};
 
  for (int i = 0; i < 16; i++) {
    memory_factors[i] = config_memory[plane_numbers[i]];
    scale_factors[i] = config_scale[plane_numbers[i]];
  }
 
  m_memory_factor = _mm256_lddqu_si256(reinterpret_cast<__m256i*>(memory_factors));
  m_scale_factor = _mm256_lddqu_si256(reinterpret_cast<__m256i*>(scale_factors));
}

process()

__m256i tpglibs::AVXRunSumProcessor::process ( const __m256i & signal )

overridevirtual

Calculate and store the running sum.

Parameters

signal

The input signal to process on.

Returns

The calculated running sum.

Reimplemented from tpglibs::AVXProcessor.

Definition at line 34 of file AVXRunSumProcessor.cpp.

                                                         {
  __m256i scaled_rs = _mm256_div_epi16(m_running_sum, 10);
  scaled_rs = _mm256_mullo_epi16(scaled_rs, m_memory_factor);
 
  __m256i scaled_signal = _mm256_div_epi16(signal, 10);
  scaled_signal = _mm256_mullo_epi16(scaled_signal, m_scale_factor);
 
  m_running_sum = _mm256_adds_epi16(scaled_rs, scaled_signal);
  return AVXProcessor::process(m_running_sum);
}

Member Data Documentation

m_memory_factor

__m256i tpglibs::AVXRunSumProcessor::m_memory_factor

private

The R factor in the model equation.

Definition at line 28 of file AVXRunSumProcessor.hpp.

m_running_sum

__m256i tpglibs::AVXRunSumProcessor::m_running_sum

private

The RS in the model equation.

Definition at line 34 of file AVXRunSumProcessor.hpp.

m_scale_factor

__m256i tpglibs::AVXRunSumProcessor::m_scale_factor

private

The S factor in the model equation.

Definition at line 31 of file AVXRunSumProcessor.hpp.

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The documentation for this class was generated from the following files:

• /github/workspace/dunedaq/sourcecode/tpglibs/include/tpglibs/AVXRunSumProcessor.hpp
• /github/workspace/dunedaq/sourcecode/tpglibs/src/AVXRunSumProcessor.cpp