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RadioObservatory
LOFAR
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b1e22779
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b1e22779
authored
15 years ago
by
Rob van Nieuwpoort
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Bug 1198: performance results
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6dd6de8e
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doc/papers/2010/SPM/spm.tex
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b1e22779
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@@ -506,6 +506,7 @@ system have a total theoretical single-precision peak performance of
...
@@ -506,6 +506,7 @@ system have a total theoretical single-precision peak performance of
\subsection
{
Essential properties and differences
}
\subsection
{
Essential properties and differences
}
% TODO refer to this table
\begin{table*}
[t]
\begin{table*}
[t]
\begin{center}
\begin{center}
{
\small
{
\small
...
@@ -641,28 +642,6 @@ within a row or column in the triangle still need the same samples.
...
@@ -641,28 +642,6 @@ within a row or column in the triangle still need the same samples.
In addition to registers, caches can thus also be used to increase
In addition to registers, caches can thus also be used to increase
data reuse.
data reuse.
%% \begin{table}
%% \begin{center}
%% {\small
%% \begin{tabular}{l|r|r|r|r}
%% tile & floating point & memory loads & arithmetic & minimum nr. \\
%% size & operations & (bytes) & intensity & registers (floats) \\
%% \hline
%% 1x1 & 32 & 32 & 1.00 & 16 \\
%% 1x2 & 64 & 48 & 1.33 & 24 \\
%% 2x2 & 128 & 64 & 2.00 & 44 \\
%% 3x2 & 192 & 80 & 2.40 & 60 \\
%% 3x3 & 288 & 96 & 3.00 & 88 \\
%% 4x3 & 384 & 112 & 3.43 & 112 \\
%% 4x4 & 512 & 128 & 4.00 & 148 \\
%% \end{tabular}
%% } %\small
%% \end{center}
%% \vspace{-0.5cm}
%% \caption{Properties of different tile sizes.}
%% \label{tile-size-table}
%% \end{table}
It is important to realize that the
It is important to realize that the
correlator itself is
\emph
{
trivially parallel
}
, since tens of thousands of
correlator itself is
\emph
{
trivially parallel
}
, since tens of thousands of
frequency channels can be processed independently. This allows us to
frequency channels can be processed independently. This allows us to
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