/[MITgcm]/MITgcm/eesupp/inc/CPP_EEOPTIONS.h
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revision 1.7 by adcroft, Wed Jul 15 22:05:44 1998 UTC revision 1.8 by cnh, Sat Sep 5 17:52:12 1998 UTC
# Line 98  C     it alone execute the BEGIN_MASTER. Line 98  C     it alone execute the BEGIN_MASTER.
98  #define _END_MASTER(a)    ENDIF  #define _END_MASTER(a)    ENDIF
99    
100  C--   Control MPI based parallel processing  C--   Control MPI based parallel processing
101  #define ALLOW_USE_MPI  #undef  ALLOW_USE_MPI
102  #define ALWAYS_USE_MPI  #undef  ALWAYS_USE_MPI
103    
104  C--   Control use of communication that might overlap computation.  C--   Control use of communication that might overlap computation.
105  C     Under MPI selects/deselects "non-blocking" sends and receives.  C     Under MPI selects/deselects "non-blocking" sends and receives.
# Line 119  C     can use 4-byte precision, reducing Line 119  C     can use 4-byte precision, reducing
119  C     boosting performance because of a smaller working  C     boosting performance because of a smaller working
120  C     set size. However, on vector CRAY systems this degrades  C     set size. However, on vector CRAY systems this degrades
121  C     performance.  C     performance.
122  #undef  REAL4_IS_SLOW  #define REAL4_IS_SLOW
123    
124  #ifdef REAL4_IS_SLOW  #ifdef REAL4_IS_SLOW
125  #define real Real*8  #define real Real*8
# Line 171  C     unless .Dnn is specified. CRAY vec Line 171  C     unless .Dnn is specified. CRAY vec
171  C     precision when they see .Dnn which runs very slowly!  C     precision when they see .Dnn which runs very slowly!
172  #ifdef REAL_D0_IS_16BYTES  #ifdef REAL_D0_IS_16BYTES
173  #define _d  #define _d
174    #define _F64( a ) a
175  #endif  #endif
176  #ifndef REAL_D0_IS_16BYTES  #ifndef REAL_D0_IS_16BYTES
177  #define _d D  #define _d D
178    #define _F64( a ) DFLOAT( a )
179  #endif  #endif
180    
181  #endif /* _CPP_EEOPTIONS_H_ */  #endif /* _CPP_EEOPTIONS_H_ */
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