sf_daq_buffer

Overview of current architecture and component interaction.

Useful links

• Hyperslab selection https://support.hdfgroup.org/HDF5/Tutor/phypecont.html
• Intro to lock free programming https://preshing.com/20120612/an-introduction-to-lock-free-programming/
• POSIX compliant write order test on GPFS https://svn.hdfgroup.org/hdf5/branches/hdf5_1_10_0/test/POSIX_Order_Write_Test_Report.pdf
• Best Practice Guide - Parallel I/O https://prace-ri.eu/wp-content/uploads/Best-Practice-Guide_Parallel-IO.pdf
• MPI-IO/GPFS, an Optimized Implementationof MPI-IO on top of GPFS https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1592834
• JSON library benchmarks https://github.com/miloyip/nativejson-benchmark
• Tuning CPU scheduler for reducing latency https://www.scylladb.com/2016/06/10/read-latency-and-scylla-jmx-process/
• Low latency 10Gbps Ethernet https://blog.cloudflare.com/how-to-achieve-low-latency/
• CFS intro https://opensource.com/article/19/2/fair-scheduling-linux
• Caching and Buffering in HDF5 https://de.slideshare.net/HDFEOS/caching-and-buffering-in-hdf5

Build

To compile this repo you will need to install the following packages on RH7:

• devtoolset-9
• cmake3
• zeromq-devel
• hdf5-devel

yum install devtoolset-9
yum install cmake3
yum install zeromq-devel
yum install hdf5-devel
yum install jsoncpp-devel

Step by step procedure to build the repo:

scl enable devtoolset-9 bash
git clone https://github.com/paulscherrerinstitute/sf_daq_buffer.git
cd sf_daq_buffer
mkdir build
cd build/
cmake3 ..
make

It is recommended to create symbolic links to the executables you will be using inside your PATH.

Example:

ln -s "$(pwd)""/""sf_buffer" /usr/bin/sf_buffer
ln -s "$(pwd)""/""sf_stream" /usr/bin/sf_stream
ln -s "$(pwd)""/""sf_replay" /usr/bin/sf_replay
ln -s "$(pwd)""/""sf_writer" /usr/bin/sf_writer