From 039e658773bef084f1abd4fabd07345ff7993ab9 Mon Sep 17 00:00:00 2001 From: Gemma Tinti Date: Thu, 21 Mar 2019 11:46:38 +0100 Subject: [PATCH] manual --- manual/manual-client/Eiger_short.tex | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/manual/manual-client/Eiger_short.tex b/manual/manual-client/Eiger_short.tex index b9271d6d4..1cefb1e9d 100644 --- a/manual/manual-client/Eiger_short.tex +++ b/manual/manual-client/Eiger_short.tex @@ -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}