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<!-- $Header: $ --> |
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<!-- $Name: $ --> |
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<description xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
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xsi:noNamespaceSchemaLocation="http://deslab.mit.edu/LCML/lcml.xsd" |
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xmlns:dc="http://purl.org/dc/elements/1.1/"> |
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<descriptionName>Atmosphere Execution Environment options</descriptionName> |
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<descriptionInfo>Use to create the CPP_EEOPTIONS.h file that is used when building MITgcm.</descriptionInfo> |
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<descriptionMetadata> |
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<dc:creator>Constantinos Evangelinos</dc:creator> |
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<dc:date>2006-06-06</dc:date> |
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</descriptionMetadata> |
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<descriptionTarget> |
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<file>CPP_EEOPTIONS.h</file> |
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</descriptionTarget> |
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<descriptionContent> |
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<startText> |
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#ifndef _CPP_EEOPTIONS_H_ |
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#define _CPP_EEOPTIONS_H_ |
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</startText> |
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<endText> |
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#endif /* _CPP_EEOPTIONS_H_ */ |
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#include "CPP_EEMACROS.h"
</endText> |
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<set> |
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<setName>CPP_EEOPTIONS Parameters</setName> |
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<setInfo>Compile Time execution environment parameters.</setInfo> |
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<separator>
</separator> |
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<var> |
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<name>FMTFTN_IO_THREAD_SAFE</name> |
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<info>Flag used to indicate whether Fortran formatted write and read are threadsafe. On SGI the routines can be thread safe, on Sun it is not possible - if you are unsure then undef this option.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> FMTFTN_IO_THREAD_SAFE</trailer> |
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</var> |
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<var> |
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<name>LOCBIN_IO_THREAD_SAFE</name> |
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<info>Flag used to indicate whether Binary write to Local file (i.e., a different file for each tile) and read are thread-safe.</info> |
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<type>string</type> |
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<use>false</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> LOCBIN_IO_THREAD_SAFE</trailer> |
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</var> |
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<var> |
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<name>DISABLE_WRITE_TO_UNIT_ZERO</name> |
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<info>Flag to turn off the writing of error message to ioUnit zero</info> |
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<type>string</type> |
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<use>false</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> DISABLE_WRITE_TO_UNIT_ZERO</trailer> |
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</var> |
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<var> |
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<name>DISABLE_MPI_READY_TO_RECEIVE</name> |
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<info>Flag turns off MPI_SEND ready_to_receive polling in the gather_* subroutines to speed up integrations.</info> |
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<type>string</type> |
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<use>false</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> DISABLE_MPI_READY_TO_RECEIVE</trailer> |
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</var> |
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<var> |
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<name>ALLOW_ASYNC_COMMUNICATION</name> |
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<info>Control use of communication that might overlap computation. Under MPI selects/deselects "non-blocking" sends and receives.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> ALLOW_ASYNC_COMMUNICATION</trailer> |
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</var> |
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<var> |
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<name>ALWAYS_USE_ASYNC_COMMUNICATION</name> |
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<info>Control use of communication that might overlap computation. Under MPI selects/deselects "non-blocking" sends and receives.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> ALWAYS_USE_ASYNC_COMMUNICATION</trailer> |
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</var> |
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<var> |
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<name>ALLOW_SYNC_COMMUNICATION</name> |
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<info>Control use of communication that is atomic to computation. Under MPI selects/deselects "blocking" sends and receives.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> ALLOW_SYNC_COMMUNICATION</trailer> |
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</var> |
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<var> |
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<name>ALWAYS_USE_SYNC_COMMUNICATION</name> |
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<info>Control use of communication that is atomic to computation. Under MPI selects/deselects "blocking" sends and receives.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> ALWAYS_USE_SYNC_COMMUNICATION</trailer> |
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</var> |
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<var> |
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<name>LETS_MAKE_JAM</name> |
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<info>Control use of JAM routines for Artic network. These invoke optimized versions of "exchange" and "sum" that utilize the programmable aspect of Artic cards.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> LETS_MAKE_JAM</trailer> |
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</var> |
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<var> |
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<name>JAM_WITH_TWO_PROCS_PER_NODE</name> |
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<info>JAM on dual processor nodes.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> JAM_WITH_TWO_PROCS_PER_NODE</trailer> |
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</var> |
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<var> |
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<name>REAL4_IS_SLOW</name> |
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<info>Control storage of floating point operands. On many systems it improves performance only to use 8-byte precision for time stepped variables. Constant in time terms ( geometric factors etc.. ) can use 4-byte precision, reducing memory utilisation and boosting performance because of a smaller working set size. However, on vector CRAY systems this degrades performance.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> REAL4_IS_SLOW</trailer> |
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</var> |
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<var> |
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<name>DO</name> |
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<info>Control use of "double" precision constants. Use D0 where it means REAL*8 but not where it means REAL*16</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<header>#define D0 </header> |
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<enumeration>e0;d0</enumeration> |
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<value>d0</value> |
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</var> |
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<var> |
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<name>ALWAYS_PREVENT_X_PERIODICITY</name> |
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<info>Control XY periodicity in processor to grid mappings: Always prevent periodicity in X.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> ALWAYS_PREVENT_X_PERIODICITY</trailer> |
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</var> |
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<var> |
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<name>ALWAYS_PREVENT_Y_PERIODICITY</name> |
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<info>Control XY periodicity in processor to grid mappings: Always prevent periodicity in Y.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> ALWAYS_PREVENT_Y_PERIODICITY</trailer> |
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</var> |
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<var> |
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<name>CAN_PREVENT_X_PERIODICITY</name> |
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<info>Control XY periodicity in processor to grid mappings: Allow periodicity prevention in X.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> CAN_PREVENT_X_PERIODICITY</trailer> |
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</var> |
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<var> |
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<name>CAN_PREVENT_Y_PERIODICITY</name> |
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<info>Control XY periodicity in processor to grid mappings: Allow periodicity prevention in Y.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> CAN_PREVENT_Y_PERIODICITY</trailer> |
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</var> |
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<var> |
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<name>COMPONENT_MODULE</name> |
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<info>Control use of communication with other component: allow to import and export from/to Coupler interface.</info> |
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<type>string</type> |
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<use>true</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#define</value> |
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<trailer> COMPONENT_MODULE</trailer> |
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</var> |
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<var> |
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<name>FAST_BYTESWAP</name> |
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<info>Alternative formulation of BYTESWAP, faster than compiler flag -byteswapio on the Altix.</info> |
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<type>string</type> |
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<use>false</use> |
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<hidden>false</hidden> |
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<enumeration>#undef;#define</enumeration> |
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<value>#undef</value> |
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<trailer> FAST_BYTESWAP</trailer> |
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</var> |
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</set> |
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</descriptionContent> |
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</description> |
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