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paf_pipeline's Introduction

udp-pipeline

目录说明

header:dada格式的header文件

pipeline:GPU中运行的程序

udp:将udp包合并为dada格式

src和include:依赖的C文件和头文件

修改scripts目录下的pipeline.sh脚本

   1. ringbuffer
   
   raw(原始输入),bmf(波束合成之后),zoo(zoom fft之后)
   
   1)设置ringbuffer关键字: a000, b000, c000
   
   2)设置程序运行的线程数
   
   3)设置ringbffer大小: bufsz_raw, bufsz_bmf, bufsz_zoo
   
   计算各ringbuffer的大小
   
   输入(a000):npkt×nelement×npol×pkt_data×sizeof(int8_t)
   
   beamform输出功率(b000): npkt×pkt_nsamp×beam×bf_nchan×sizeof(float)/naverage_bf
   
   zoomfft输出功率(c000):zoom_nsamp×zoom_nchan×bf_nchan×sizeof(float)/naverage_zoom

   
   4)根据设置参数创建3个ringbuffer
    
   2. 数据存储
   
   设置数据存储目录:dir_raw, dir_bmf, dir_zoo
   
   激活dada_dbdisk存储数据:dada_dbdisk -D 'save_dir' -k 'ringbuffer' -W
   
   3. 开启 pipeline 和 udp2db
   ../build/pipeline/pipeline_dada_beamform -i $key_raw -o $key_bmf -n $nreader_raw -g 0
   ../build/udp/udp2db -k $key_raw -i 10.11.4.54 -p 12345 -f ../header/512MHz_1ant1pol_4096B.header -m 56400
   
   4. 接收结束后关闭数据存储,清除ringbuffer

运行

   bash pipeline.sh
   udpgen -i 10.11.4.54 -p 12346 -I 10.11.4.54 -P 12345 -r 10   (ip和port根据实际情况修改,-i和-p为发送端,-I和-P为接收端)

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