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Gemma Tinti 2019-03-21 11:46:38 +01:00
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commit 039e658773
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12
manual/manual-client/Eiger_short.tex
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@ -24,7 +24,7 @@ Figure ~\ref{boards} show the readout board basic components on an Eiger half mo
\begin{center}
\includegraphics[width=1\textwidth]{Boards}
\end{center}
\caption{Picture with most relevant components of the EIGER readout system. The readout system starts with the Front End Boards (FEB) which performs data descrambling (also converts the packets from 12 $\to$ 16 bits) and rate correction. The BackEndBoard (BEB) has 2x2GB DDR2 memories and can perform data buffering (storing images on board) and data summation (16 bit $\to$ 32 bits). The controls to the detector are passed through the 1Gb, while in most installations, the data are sent out through the 10GB ethernet connection.}
\caption{Picture with most relevant components of the EIGER readout system. The readout system starts with the Front End Boards (FEB) which performs data descrambling (also converts the packets from 12 $\to$ 16 bits) and rate correction. The BackEndBoard (BEB) has 2x2GB DDR2 memories and can perform data buffering (storing images on board) and data summation (16 bit $\to$ 32 bits). The controls to the detector are passed through the 1Gb, while in most installations, the data are sent out through the 10~GB ethernet connection.}
\label{boards}
\end{figure}
@ -748,6 +748,16 @@ Last, it is very important that not too many files are created. There is high po
\end{verbatim}
in {\tt{slsDetectorsPackage/slsReceiverSoftware/include/sls\_receiver\_defs.h}}. In 4.0.x, this is interactively defined using the command: {\tt{r\_framesperfile}}. By default it is 10000.
If you do not have a large disk, you can write to memory if your pc is not fast enough:
\begin{verbatim}
mount -t tmpfs none /ramdisk_folder
\end{verbatim}
or
\begin{verbatim}
mount -t tmpfs none /mnt/ramdisk -o size=10G
\end{verbatim}
check how many GB memory you can allocate, to avoid swapping otherwise
\section{Offline processing and monitoring}
\subsection{Data out of the detector: UDP packets}\label{UDP}