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\begin{itemize} |
\begin{itemize} |
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\item[\programopt{-n} \var{nn}] the number of compute nodes \var{nn} to be used. The total number of process being used is |
\item[\programopt{-n} \var{nn}] the number of compute nodes \var{nn} to be used. The total number of process being used is |
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$\var{nn} \cdot \var{ns}$. This option overwrites the value of the \env{ESCRIPT_NUM_NODES} environment variable. If $\var{nn}>1$ but {\it escript} is not compiled for \MPI a warning is printed but execution is continued with $\var{nn}=1$. The default value is 1. |
$\var{nn} \cdot \var{ns}$. This option overwrites the value of the \env{ESCRIPT_NUM_NODES} environment variable. If $\var{nn}>1$ but {\it escript} is not compiled for \MPI a warning is printed but execution is continued with $\var{nn}=1$. If \programopt{-n} is not set the |
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number of hosts in the host file is used. The default value is 1. |
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\item[\programopt{-p} \var{np}] the number of MPI processes per node. The total number of processes to be used is |
\item[\programopt{-p} \var{np}] the number of MPI processes per node. The total number of processes to be used is |
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$\var{nn} \cdot \var{np}$. This option overwrites the value of the \env{ESCRIPT_NUM_PROC} environment variable. If $\var{np}>1$ but {\it escript} is not compiled for \MPI a warning is printed but execution is continued with $\var{np}=1$. The default value is 1. |
$\var{nn} \cdot \var{np}$. This option overwrites the value of the \env{ESCRIPT_NUM_PROC} environment variable. If $\var{np}>1$ but {\it escript} is not compiled for \MPI a warning is printed but execution is continued with $\var{np}=1$. The default value is 1. |
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The option overwrites the value of the \env{ESCRIPT_NUM_THREADS} environment variable. |
The option overwrites the value of the \env{ESCRIPT_NUM_THREADS} environment variable. |
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If $\var{nt}>1$ but {\it escript} is not compiled for \OPENMP a warning is printed but execution is continued with $\var{nt}=1$. The default value is 1. |
If $\var{nt}>1$ but {\it escript} is not compiled for \OPENMP a warning is printed but execution is continued with $\var{nt}=1$. The default value is 1. |
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\item[\programopt{-f} \var{hostfile}] the name of a file with a list of host names. Some systems require to specify the addresses or names of the compute nodes where \MPI process should be spawned. The list of addresses or names of the compute nodes is listed in the file with the name \var{hostfile}. In order to avoid oversubsription the number of differnt |
\item[\programopt{-f} \var{hostfile}] the name of a file with a list of host names. Some systems require to specify the addresses or names of the compute nodes where \MPI process should be spawned. The list of addresses or names of the compute nodes is listed in the file with the name \var{hostfile}. If \programopt{-n} is set the |
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hosts defined in \var{hostfile} must be greater or equal to the number of requsted compute nodes \var{nn}. The option overwrites the value of the \env{ESCRIPT_HOSTFILE} environment variable. By default value no host file is used. |
the number of different |
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hosts defined in \var{hostfile} must be equal to the number of requsted compute nodes \var{nn}. The option overwrites the value of the \env{ESCRIPT_HOSTFILE} environment variable. By default value no host file is used. |
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\item[\programopt{-c}] prints the information about the settings used to compile {\it escript} and stops execution.. |
\item[\programopt{-c}] prints the information about the settings used to compile {\it escript} and stops execution.. |
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\item[\programopt{-V}] prints the version of {\it escript} and stops execution. |
\item[\programopt{-V}] prints the version of {\it escript} and stops execution. |
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\item[\programopt{-h}] prints a help message and stops execution. |
\item[\programopt{-h}] prints a help message and stops execution. |
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