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#include "stdlib.h" |
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#include "stdio.h" |
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#include "netcdf.h" |
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#include "errno.h" |
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#include "string.h" |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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/* gcc main.c -I/usr/include/netcdf-3 -L/usr/lib/netcdf-3 -lnetcdf */ |
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|
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main(int argc, char *argv[]) |
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{ |
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int ncfid; |
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int rc; |
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int tile_number, sNx, sNy, nSx, nSy, nPx, nPy, Nx, Ny, Nr, iLo, jLo; |
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int vId, dId; |
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int dimT, dimX, dimY, dimZ, dError; |
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float *arrIn, *arrOut; |
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char *fNam, *vNam,fNam1[1024],fNam2[1024]; |
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int i, j, k, t, iOffIn, iOffOut, iOffFile; |
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long iSeek; |
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int ti, tj; |
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int fid; |
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|
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int dbLev; |
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|
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dbLev=0; |
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|
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/* Open a tile file */ |
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fNam=argv[1]; |
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rc=nc_open( fNam, 0, &ncfid ); |
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vNam = argv[2]; |
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/* Get global attributes */ |
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/* o tile number */ |
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rc=nc_get_att_int( ncfid, NC_GLOBAL,"tile_number", &tile_number ); |
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if( dbLev > 0 ) printf( "tile_number == %d\n", tile_number ); |
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/* o sNx, sNy, nSx, nSy, nPx, nPy, Nx, Ny, Nr */ |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"sNx",&sNx); |
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if ( dbLev > 2 ) printf("sNx == %d\n",sNx); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"sNy",&sNy); |
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if ( dbLev > 2 ) printf("sNy == %d\n",sNy); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"nSx",&nSx); |
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if ( dbLev > 2 ) printf("nSx == %d\n",nSx); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"nSy",&nSy); |
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if ( dbLev > 2 ) printf("nSy == %d\n",nSy); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"nPx",&nPx); |
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if ( dbLev > 2 ) printf("nPx == %d\n",nPx); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"nPy",&nPy); |
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if ( dbLev > 2 ) printf("nPy == %d\n",nPy); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"Nx",&Nx); |
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if ( dbLev > 2 ) printf("Nx == %d\n",Nx); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"Ny",&Ny); |
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if ( dbLev > 2 ) printf("Ny == %d\n",Ny); |
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rc=nc_get_att_int(ncfid,NC_GLOBAL,"Nr",&Nr); |
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if ( dbLev > 2 ) printf("Nr == %d\n",Nr); |
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|
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/* Check dimensions - for now these should match */ |
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/* sNx, sNy, Nr and have T = 1 */ |
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rc=nc_inq_dimid( ncfid, "X", &dId ); |
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rc=nc_inq_dimlen( ncfid, dId, &dimX ); |
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if ( dbLev > 2 ) printf( "dimX == %d\n", dimX ); |
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rc=nc_inq_dimid( ncfid, "Y", &dId ); |
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rc=nc_inq_dimlen( ncfid, dId, &dimY ); |
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if( dbLev > 2 ) printf( "dimY == %d\n", dimY ); |
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rc=nc_inq_dimid( ncfid, "Z", &dId ); |
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rc=nc_inq_dimlen( ncfid, dId, &dimZ ); |
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if( dbLev > 2 ) printf( "dimZ == %d\n", dimZ ); |
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rc=nc_inq_dimid( ncfid, "T", &dId ); |
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rc=nc_inq_dimlen( ncfid, dId, &dimT ); |
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if( dbLev > 2 ) printf( "dimT == %d\n", dimT ); |
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dError = 0; |
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if( dimX != sNx ) {dError=1;}; |
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if( dimY != sNy ) {dError=1;}; |
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if( dimZ != Nr ) {dError=1;}; |
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if( dimT != 1 ) {dError=1;}; |
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if( dError != 0 ) { |
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printf( |
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"Error: Inconsistent dimension variable sizes and global variable attribute settings\n"); |
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} |
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|
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|
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/* Get a piece of the data */ |
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arrIn = calloc( sNx*sNy*Nr, sizeof(*arrIn) ); |
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arrOut = calloc( sNx*sNy*Nr, sizeof(*arrOut) ); |
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rc = nc_inq_varid( ncfid, vNam, &vId ); |
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rc = nc_get_var_float( ncfid, vId, arrIn ); |
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/* Reorder from T Z Y X to X Y Z */ |
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iOffIn=0; |
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for( t=1; t<2; t++ ){ |
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for( k=1; k<=Nr; k++ ){ |
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for( j=1; j<=sNy; j++ ){ |
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for( i=1; i<=sNx; i++ ){ |
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iOffOut=(k-1)*sNx*sNy+(j-1)*sNx+i-1; |
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arrOut[iOffOut]=arrIn[iOffIn]; |
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iOffIn++; |
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} |
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} |
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} |
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} |
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|
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|
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/* Put my piece in the global binary file */ |
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/* tRank=(tj-1)*nSx+ti; */ |
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/* ti=mod(tRank,nSx)+1; */ |
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/* tj=tRank/nSx+1; */ |
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ti=(tile_number-1)%(nSx*nPx)+1; |
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iLo=(ti-1)*sNx+1; |
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if( dbLev > 2 ) printf( "ti == %d\n", ti ); |
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if( dbLev > 2 ) printf( "iLo == %d\n", iLo ); |
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tj=(tile_number-1)/(nSx*nPx)+1; |
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jLo=(tj-1)*sNy+1; |
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if( dbLev > 2 ) printf( "tj == %d\n", tj ); |
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if( dbLev > 2 ) printf( "jLo == %d\n", jLo ); |
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/* Write data to global file one row at a time */ |
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sscanf( fNam, "%[^.].%[^.].", fNam1, fNam2 ); |
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sprintf( fNam1, "%s.%s.data", vNam, fNam2 ); |
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printf( "Writing to %s\n", fNam1 ); |
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fid=open( fNam1, O_CREAT | O_RDWR , S_IRWXU ); |
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if( fid <= 0 ){ |
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perror( "open error" ); |
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exit( 0 ); |
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} |
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for( t=1; t<2; t++ ){ |
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for( k=1; k<=Nr; k++ ){ |
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for( j=1; j<=sNy; j++ ){ |
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iOffOut=(k-1)*sNx*sNy+(j-1)*sNx; |
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iOffFile=(k-1)*Nx*Ny+(jLo-1)*Nx+(j-1)*Nx+iLo-1; |
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iSeek=iOffFile*sizeof(*arrOut); |
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/* printf( "Seeking to %d\n", iSeek ); */ |
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rc=lseek( fid, (off_t)iSeek, SEEK_SET ); |
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if ( rc != iSeek ){ |
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perror( "lseek error" ); |
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printf( "rc = %d\n", rc ); |
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exit( 0 ); |
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} |
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rc=write( fid, arrOut+iOffOut, sizeof(*arrOut)*sNx ); |
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} |
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} |
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} |
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close( fid ); |
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|
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} |
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