Changeset 6655 for trunk/MagicSoft/TDAS-Extractor

Timestamp:

02/21/05 19:55:35 (20 years ago)

Author:

gaug

Message:

*** empty log message ***

File:

• trunk/MagicSoft/TDAS-Extractor/Speed.tex (modified) (4 diffs)

trunk/MagicSoft/TDAS-Extractor/Speed.tex

@@ -1 +1 @@
 \section{CPU Requirements}
 
-We tested the speed of the extractors by running them on a Intel\ Pentium\ 4 CPU, 
-2.4\,GHz machine at Barcelona and measured 
-the number of events executed per seconds. The results differed by about 20\% from one try to another (on the 
-same extractor), but in general, the differences between the extractors are much bigger than the intrinsic fluctuation. 
-Table~\ref{tab:cpu} shows the obtained results.
+We tested the speed of the extractors by running them on an Intel\ Pentium\ IV, 
+2.4\,GHz~CPU machine at IFAE and measured 
+the number of executed events per seconds. This was done using the CPU-time measure features which incorporates each task in MARS. 
+\par
+The results could easily differ by about 20\% from one try to another (using the 
+same extractor), but in general, 
+the differences between the extractors are much bigger than the intrinsic fluctuation. 
+Table~\ref{tab:cpu} shows the obtained results. The numbers in this list have to be compared to the 
+I/O speed of about 400~evts/sec. of the {\textit{\bf MRead}}-task which performs the reading 
+(and de-compression) of the merpped root-files in MARS. Thus, for time being, every extractor being faster 
+than this reference number does not limit the total event reconstruction speed. Only the integrating spline 
+extractors lie below this limit and would need to be optimized further.
 
 \begin{table}[htp]
 \centering
-\small{
 \begin{tabular}{|c|c|c|c|}
 \hline
 \hline
-\multicolumn{4}{|c|}{\large Tested CPU Time} \rule{0mm}{6mm} \rule[-2mm]{0mm}{6mm} \hspace{-3mm}\\
+\multicolumn{4}{|c|}{\large Measured Extraction Speed} \rule{0mm}{6mm} \rule[-2mm]{0mm}{6mm} \hspace{-3mm}\\
 \hline
 \hline
@@ -20 +26 @@
 \hline                                                     
 \hline                                                     
-1   & Fixed Win. (4,4)   & 3500--4500 & \\   
-2   & Fixed Win. (4,6)   & 3500--4500 & \\   
-3   & Fixed Win. (6.6)   & 3200--4000 & \\   
-4   & Fixed Win. (8,8)   & 3200--4000 & \\   
-5   & Fixed W. (14,10)   & 2700--3300 & \\   
+1   & Fixed Win. (4,4)   & 3500--4500 & no time \\   
+2   & Fixed Win. (4,6)   & 3500--4500 & no time \\   
+3   & Fixed Win. (6.6)   & 3200--4000 & no time \\   
+4   & Fixed Win. (8,8)   & 3200--4000 & no time \\   
+5   & Fixed W. (14,10)   & 2700--3300 & no time \\   
 \hline                          
-6   & Fix. Win. Spline (4,4) & 1700--2200 &  \\   
-7   & Fix. Win. Spline (4,6) & 1700--2200 &  \\   
-8   & Fix. Win. Spline (6.6) & 1700--2100 &  \\   
-9   & Fix. Win. Spline (8,8) & 1300--1800 &  \\   
-10  & Fix. Win. Spl. (14,10) &  600--1200 &  \\   
+6   & Fix. Win. Spline (4,4) & 1700--2200 &  no time \\   
+7   & Fix. Win. Spline (4,6) & 1700--2200 &  no time \\   
+8   & Fix. Win. Spline (6.6) & 1700--2100 &  no time \\   
+9   & Fix. Win. Spline (8,8) & 1300--1800 &  no time \\   
+10  & Fix. Win. Spl. (14,10) &  600--1200 &  no time \\   
 \hline                          
-11  & Fix. Win. Peak S. (2,2) & 2300--2900 &    \\   
-12  & Fix. Win. Peak S. (4,4) & 2300--2900 &    \\   
-13  & Fix. Win. Peak S. (4.6) & 2300--2900 &    \\   
-14  & Fix. Win. Peak S. (6,6) & 2300--2900 &    \\   
-15  & Fix. Win. Peak S. (8,8) & 2200--2800 &    \\   
-16  & Fix. Win. Pk S. (14,10) & 2000--2500 &    \\   
+11  & Fix. Win. Peak S. (2,2) & 2300--2900 &    no time \\   
+12  & Fix. Win. Peak S. (4,4) & 2300--2900 &    no time \\   
+13  & Fix. Win. Peak S. (4.6) & 2300--2900 &    no time \\   
+14  & Fix. Win. Peak S. (6,6) & 2300--2900 &    no time \\   
+15  & Fix. Win. Peak S. (8,8) & 2200--2800 &    no time \\   
+16  & Fix. Win. Pk S. (14,10) & 2000--2500 &    no time \\   
 \hline                          
 17  & Slid. Win. (2,2) & 400--700 & \\   
@@ -47 +53 @@
 \hline                          
 23  & Spline Amplitude  & 700--1000 & \\
-24  & Splne Int. (1,1.5)& 300--500 & \\
+24  & Spline Int. (1,1.5)& 300--500 & \\
 25  & Spline Int. (2,3) & 200--400 & \\
-26  & Spline Int. (4,6) & 150--200 & \\
-27  & Spline Int. (6,9) & 80--120 & \\
+26  & Spline Int. (4,6) & 150--200 & to be optimized \\
+27  & Spline Int. (6,9) & 80--120 & to be optimized \\
 \hline                               
 28  & Dig. Filt. (6,6)  & 700--900 &   \\
@@ -58 +64 @@
 \hline
 \end{tabular}
-}
-\caption{The speed of every extractor.}
+\caption{The extraction speed measured for every extractor.}
 \label{tab:cpu}
 \end{table}