Data Writer Operator

Overview

Writes binary data from its input to an output file. This operator is intened for use as a debugging aid.

Description

The data writer operator takes in a std::tuple<tensor_t<complex, 2>, cuda_stream_t>, copies the data to a host tensor, then writes the data out to a binary file.

The file path is determined based on input metadata with the following keys:

1. channel_number (default 0)
2. bandwidth_hz (default 0.0)
3. rf_ref_freq_hz (default 0.0)

With this, it creates: data_writer_out_ch{channel_number}_bw{bandwidth_hz}_freq{rf_ref_freq_hz}.dat.

Requirements

• MatX

Configuration

The data writer operator takes in a few parameters:

data_writer:
  burst_size: 1280
  num_bursts: 625

• burst_size: Number of samples contained in each burst
• num_bursts: Number of bursts to process at once

Example Usage

For an example of how to use this operator, see the psd_pipeline application.

Usually, you'd just want to write one burst of data to a file. To do that, you could use a CountCondition to limit the number of times this operator runs:

auto dataWriterOp = make_operator<ops::DataWriter>(
    "dataWriterOp",
    make_condition<CountCondition>(1));