=================================================================== RCS file: /home/cvs/OpenXM/doc/issac2000/homogeneous-network.tex,v retrieving revision 1.8 retrieving revision 1.11 diff -u -p -r1.8 -r1.11 --- OpenXM/doc/issac2000/homogeneous-network.tex 2000/01/16 03:15:49 1.8 +++ OpenXM/doc/issac2000/homogeneous-network.tex 2000/01/17 07:15:52 1.11 @@ -1,4 +1,4 @@ -% $OpenXM: OpenXM/doc/issac2000/homogeneous-network.tex,v 1.7 2000/01/15 06:11:17 takayama Exp $ +% $OpenXM: OpenXM/doc/issac2000/homogeneous-network.tex,v 1.10 2000/01/17 07:06:53 noro Exp $ \subsection{Distributed computation with homogeneous servers} \label{section:homog} @@ -54,20 +54,21 @@ the computational cost and the communication cost for Figure \ref{speedup} shows that the speedup is satisfactory if the degree is large and $L$ is not large, say, up to 10 under the above envionment. -If OpenXM provides the broadcast and the reduce operations, the cost of +If OpenXM provides operations for the broadcast and the reduction +such as {\tt MPI\_Bcast} and {\tt MPI\_Reduce} respectively, the cost of sending $f_1$, $f_2$ and gathering $F_j$ may be reduced to $O(log_2L)$ and we can expect better results in such a case. \subsubsection{Competitive distributed computation by various strategies} -Singular \cite{Singular} implements {\tt MP} interface for distributed +SINGULAR \cite{Singular} implements {\it MP} interface for distributed computation and a competitive Gr\"obner basis computation is illustrated as an example of distributed computation. Such a distributed computation is also possible on OpenXM. The following Risa/Asir function computes a Gr\"obner basis by starting the computations simultaneously from the homogenized input and the input itself. The client watches the streams by {\tt ox\_select()} -and The result which is returned first is taken. Then the remaining +and the result which is returned first is taken. Then the remaining server is reset. \begin{verbatim}