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#include "CPP_OPTIONS.h" |
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c ================================================================== |
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c |
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c ad_read_write.F: routines to handle the I/O of the TAMC generated |
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c code. All files are direct access files. |
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c Routines: |
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c |
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c o adread - Read data from file. |
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c o adwrite - Write data to file. |
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c |
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c |
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c The following input veriables are used throughout in the argument |
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c lists: |
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c |
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c name - character |
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c On entry, name is the extended tape name. |
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c len - integer |
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c On entry, len is the number of characters in name. |
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c tid - integer |
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c On entry, tid identifies the tape. |
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c vid - integer |
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c On entry, vid identifies the variable to be stored on |
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c the tape. |
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c var - real array of dimension length |
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c On entry, var contains the values to be stored. |
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c var must not be changed. |
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c size - integer |
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c On entry, size is the size in bytes of the type of |
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c variable var. |
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c length - integer |
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c On entry, length is the dimension of the variable |
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c stored on the tape. |
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c irec - integer |
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c On entry, irec is the record number to be written. |
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c mythid - integer |
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c On entry, mythid is the number of the thread or |
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c instance of the program. |
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c myiter - integer |
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c On entry, myiter is the current iteration step during |
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c the integration. |
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c |
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c For further details on this see the TAMC Users Manual, Appendix B, |
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c User defined Storage Subroutines. |
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c |
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c TAMC does not provide the two leading arguments mythid and myiter |
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c when compiling the MITgcmUV code. Instead the is a sed script avail- |
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c able that does change the TAMC-generated adjoint code. |
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c |
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c Only the master thread is allowed to write data and only gobal |
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c model arrays are allowed to be written be the subsequent routines. |
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c Tiled data are to be stored in common blocks. This implies that at |
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c least a two level checkpointing for the adjoint code has to be |
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c available. |
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c |
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c ================================================================== |
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|
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|
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subroutine adread( |
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I mythid, |
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I name, |
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I len, |
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I tid, |
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I vid, |
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O var, |
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I size, |
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I length, |
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I irec |
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& ) |
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|
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c ================================================================== |
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c SUBROUTINE adread |
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c ================================================================== |
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c |
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c o Read direct access file. |
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c |
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c A call to this routine implies an open-read-close sequence |
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c since it uses the MITgcmUV i/o routine MDSREADVECTOR. Only |
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c the master thread reads the data. Otherwise each thread would |
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c read from file. |
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c |
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c started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
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c |
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c changed: Christian Eckert eckert@mit.edu 15-Feb-2000 |
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c |
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c - Restructured the code in order to create a package |
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c for the MITgcmUV. |
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c |
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c changed: Patrick Heimbach heimbach@mit.edu 27-May-2000 |
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c |
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c - changed subroutine parameter list: skipped myiter |
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c |
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c ================================================================== |
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c SUBROUTINE adread |
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c ================================================================== |
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implicit none |
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c == global variables == |
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "ctrl.h" |
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#include "optim.h" |
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|
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c == routine arguments == |
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|
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integer mythid |
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character*(*) name |
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integer len |
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integer tid |
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integer vid |
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integer size |
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integer length |
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integer irec |
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_RL var(length) |
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|
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c == local variables == |
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|
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character*(7) itername |
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character*(80) fname |
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integer il |
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integer bx,by |
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c == functions == |
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|
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integer ilnblnk |
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external ilnblnk |
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c == end of interface == |
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write(fname(1:80),'(a)') ' ' |
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write(itername,'(a,i4.4)') '.it',optimcycle |
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il = ilnblnk( name ) |
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write(fname(1:il+7),'(a,a)') name(1:il),itername |
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|
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_BEGIN_MASTER( mythid ) |
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by = myByLo(myThid) |
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bx = myBxLo(myThid) |
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call mdsreadvector( fname, size*8, 'RL', |
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& length, var, bx, by, irec, mythid ) |
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_END_MASTER( mythid ) |
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c Everyone must wait for the read operation to be completed. |
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_BARRIER |
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|
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return |
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end |
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|
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|
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subroutine adwrite( |
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I mythid, |
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I name, |
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I len, |
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I tid, |
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I vid, |
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I var, |
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I size, |
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I length, |
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I irec |
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& ) |
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|
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c ================================================================== |
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c SUBROUTINE adwrite |
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c ================================================================== |
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c |
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c o Write to direct access file. |
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c |
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c A call to this routine implies an open-read-close sequence |
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c since it uses the MITgcmUV i/o routine MDSREADVECTOR. Only |
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c the master thread writes the data. Otherwise each thread would |
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c write to file. This would result in an excessive waste of |
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c disk space. |
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c |
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c started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
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c |
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c changed: Christian Eckert eckert@mit.edu 15-Feb-2000 |
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c |
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c - Restructured the code in order to create a package |
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c for the MITgcmUV. |
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c |
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c changed: Patrick Heimbach heimbach@mit.edu 27-May-2000 |
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c |
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c - changed subroutine parameter list: skipped myiter |
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c |
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c ================================================================== |
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c SUBROUTINE adwrite |
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c ================================================================== |
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|
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implicit none |
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c == global variables == |
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "ctrl.h" |
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#include "optim.h" |
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|
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c == routine arguments == |
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|
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integer mythid |
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character*(*) name |
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integer len |
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integer tid |
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integer vid |
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integer size |
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integer length |
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integer irec |
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_RL var(length) |
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|
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c == local variables == |
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|
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character*(7) itername |
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character*(80) fname |
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integer il |
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integer bx,by |
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logical globalfile |
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c == functions == |
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|
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integer ilnblnk |
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external ilnblnk |
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c == end of interface == |
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globalfile = .false. |
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il = ilnblnk( name ) |
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write(fname(1:80),'(a)') ' ' |
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write(itername,'(a,i4.4)') '.it',optimcycle |
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write(fname(1:il+7),'(a,a)') name(1:il),itername |
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_BEGIN_MASTER( mythid ) |
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by = myByLo(myThid) |
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bx = myBxLo(myThid) |
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call mdswritevector( fname, size*8, globalfile, 'RL', |
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& length, var, bx, by, irec, 0, mythid ) |
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_END_MASTER( mythid ) |
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c Everyone must wait for the write operation to be completed. |
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_BARRIER |
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|
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return |
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end |
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