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EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF YOUR JURISDICTION. It is licensee's responsibility to comply with any export regulations applicable in licensee's jurisdiction. Under CURRENT U.S. export regulations this software is eligible for export from the U.S. and can be downloaded by or otherwise exported or reexported worldwide EXCEPT to U.S. embargoed destinations which include Cuba, Iraq, Libya, North Korea, Iran, Syria, Sudan, Afghanistan and any other country to which the U.S. has embargoed goods and services. *************************************************************************** For more documentation than found here, see [1] doc/ReadMe_IMB.txt [2] Intel (R) MPI Benchmarks Users Guide and Methodology Description In doc/IMB_ug.pdf File: IMB_init_file.c Implemented functions: IMB_init_file_content; IMB_init_file; IMB_free_file; IMB_del_file; IMB_open_file; ***************************************************************************/ #include "IMB_declare.h" #include "IMB_benchmark.h" #include "IMB_prototypes.h" void IMB_init_file_content(void* BUF, int pos1, int pos2) /* Initializes contents of a file for READ benchmarks Input variables: -pos1 (type int) -pos2 (type int) pos1, pos2: target positions (start/end) in file In/out variables: -BUF (type void*) Content of buffer to be written to file between these positions */ { IMB_ass_buf( BUF, 0, pos1, pos2, 1); } int IMB_init_file(struct comm_info* c_info, struct Bench* Bmark, int NP) /* Input variables: -Bmark (type struct Bench*) (For explanation of struct Bench type: describes all aspects of modes of a benchmark; see [1] for more information) Given file i/o benchmark -NP (type int) Number of active processes In/out variables: -c_info (type struct comm_info*) Collection of all base data for MPI; see [1] for more information MPI_File component is set accordingly Return value (type int) Error code (identical with MPI error code if occurs) */ { int error = 0; int fnlen; IMB_free_file(c_info); c_info->fh = MPI_FILE_NULL; c_info->etype = MPI_BYTE; MPI_Type_size(c_info->etype,&c_info->e_size); c_info->filetype = c_info->etype; IMB_user_set_info(&c_info->info); c_info-> disp = (MPI_Offset)0; c_info->datarep = IMB_str("native"); if( Bmark->RUN_MODES[0].type == SingleTransfer ) c_info->all_io_procs = 1; else c_info->all_io_procs = c_info->num_procs; fnlen = 1+strlen(FILENAME); /* July 2002 fix V2.2.1: group_mode >= 0 */ if( c_info->group_mode >= 0 ) fnlen += 4; if( Bmark->fpointer == private ) { if( c_info->rank > c_info->all_io_procs-1 || c_info->rank < 0 ) { c_info->File_comm = MPI_COMM_NULL; c_info->File_rank = -1; c_info->File_num_procs = 0; } else { c_info->File_comm = MPI_COMM_SELF; c_info->File_rank = 0; c_info->File_num_procs = 1; } if( c_info->File_rank >= 0 ) { fnlen += 4; c_info->filename = (char*) IMB_v_alloc(sizeof(char)*fnlen,"Init_File"); /* July 2002 fix V2.2.1: group_mode >= 0 */ if( c_info->group_mode >= 0 ) sprintf(c_info->filename,"%s_g%d_%d",FILENAME,c_info->group_no,c_info->w_rank); else sprintf(c_info->filename,"%s_%d",FILENAME,c_info->w_rank); c_info->amode = MPI_MODE_CREATE | MPI_MODE_RDWR | MPI_MODE_UNIQUE_OPEN; } } else { if( c_info->communicator == MPI_COMM_NULL ) { c_info->File_comm = MPI_COMM_NULL; c_info->File_rank = -1; c_info->File_num_procs = 0; } else { c_info->File_comm = c_info->communicator; c_info->File_rank = c_info->rank; c_info->File_num_procs = c_info->num_procs; } c_info->filename = (char*) IMB_v_alloc(sizeof(char)*fnlen,"Init_File"); /* July 2002 fix V2.2.1: group_mode >= 0 */ if( c_info->group_mode >= 0 ) sprintf(c_info->filename,"%s_g%d",FILENAME,c_info->group_no); else sprintf(c_info->filename,"%s",FILENAME); c_info->amode = MPI_MODE_CREATE | MPI_MODE_RDWR; } if( Bmark->access == no ) return 0; if( c_info -> File_rank == 0 ) { int ierr, size, total; MPI_Status stat; IMB_del_file(c_info); size=1< MSGSPERSAMPLE ) total = size*MSGSPERSAMPLE; /* July 2002 fix V2.2.1: calculation of file sizes in "priv" case */ if ( Bmark->fpointer == private ) { int NP= c_info->all_io_procs; total = (total+NP-1)/NP; if ( size%NP ) total += asize*MSGSPERSAMPLE; } /* July 2002 end fix */ ierr = MPI_File_open(MPI_COMM_SELF, c_info->filename, c_info->amode, c_info->info, &c_info->fh); IMB_err_hand(1,ierr); MPI_File_set_view(c_info->fh,(MPI_Offset)0, c_info->etype,c_info->etype,c_info->datarep,c_info->info); /* July 2002 fix V2.2.1: size <-> total */ ierr = MPI_File_set_size(c_info->fh, total); IMB_err_hand(1,ierr); if( Bmark->access == get ) { /* Prepare File for input */ int el_size = 1<<20; int pos1, pos2; pos1 = 0; while( pos1 < total ) { pos2 = min(total-1,pos1+el_size-1); size = ((pos2-pos1)/asize+1)*asize; IMB_alloc_buf(c_info, "Init_File 1 ",size, 0); IMB_init_file_content(c_info->s_buffer, pos1, pos2); ierr=MPI_File_write(c_info->fh,c_info->s_buffer,pos2-pos1+1,c_info->etype,&stat); IMB_err_hand(1,ierr); pos1 = pos2+1; } IMB_del_s_buf(c_info); } ierr= MPI_File_close(&c_info->fh); IMB_err_hand(1,ierr); } return error; } void IMB_free_file(struct comm_info * c_info) /* In/out variables: -c_info (type struct comm_info *) Collection of all base data for MPI; see [1] for more information File related components are free-d and reset to NULL initialization */ { if( c_info->filename != (char*)NULL ) free(c_info->filename); if( c_info->datarep != (char*)NULL ) free(c_info->datarep ); if( c_info->filename != (char*)NULL ) if( c_info->view != MPI_DATATYPE_NULL ) MPI_Type_free(&c_info->view); if( c_info->info != MPI_INFO_NULL ) MPI_Info_free(&c_info->info); if( c_info->fh != MPI_FILE_NULL ) MPI_File_close(& c_info->fh ); c_info->filename = (char*)NULL; c_info->datarep = (char*)NULL; c_info->view = MPI_DATATYPE_NULL; c_info->info = MPI_INFO_NULL; c_info->fh = MPI_FILE_NULL; } void IMB_del_file(struct comm_info* c_info) /* In/out variables: -c_info (type struct comm_info*) Collection of all base data for MPI; see [1] for more information File associated to MPI_File component is erased from disk */ { if( c_info-> fh != MPI_FILE_NULL ) MPI_File_close(&c_info->fh); if( c_info->filename != (char*)NULL ) { if( c_info->File_rank == 0 ) { int ierr; /* IMB_3.0: simplify file deletion */ ierr=MPI_File_delete(c_info->filename,MPI_INFO_NULL); } } } int IMB_open_file(struct comm_info* c_info) /* In/out variables: -c_info (type struct comm_info*) Collection of all base data for MPI; see [1] for more information File associated to MPI_File component is opened, view is set Return value (type int) Error code (identical with MPI error code if occurs) */ { int ierr; ierr = 0; if ( c_info->File_comm != MPI_COMM_NULL ) { ierr = MPI_File_open(c_info->File_comm, c_info->filename, c_info->amode, c_info->info, &c_info->fh); MPI_ERRHAND(ierr); ierr = MPI_File_set_view(c_info->fh, c_info->disp, c_info->etype, c_info->filetype, c_info->datarep, c_info->info); MPI_ERRHAND(ierr); } return ierr; }