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libs/ck-libs/ampi/romio/adio/ad_pvfs/ad_pvfs_hints.c

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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/* 
 *   $Id$    
 *
 *   Copyright (C) 1997 University of Chicago. 
 *   See COPYRIGHT notice in top-level directory.
 */

#include "ad_pvfs.h"

void ADIOI_PVFS_SetInfo(ADIO_File fd, MPI_Info users_info, int *error_code)
{
    char *value;
    int flag, tmp_val, str_factor=-1, str_unit=-1, start_iodev=-1; 

    if (!(fd->info)) {
        /* This must be part of the open call. can set striping parameters 
           if necessary. */ 
        MPI_Info_create(&(fd->info));
        MPI_Info_set(fd->info, "romio_pvfs_listio_read", "disable");
        MPI_Info_set(fd->info, "romio_pvfs_listio_write", "disable");
        fd->hints->fs_hints.pvfs.listio_read = ADIOI_HINT_DISABLE;
        fd->hints->fs_hints.pvfs.listio_write = ADIOI_HINT_DISABLE;
        
        /* has user specified any pvfs-specific hints (striping params, listio)
           and do they have the same value on all processes? */
        if (users_info != MPI_INFO_NULL) {
            value = (char *) ADIOI_Malloc((MPI_MAX_INFO_VAL+1)*sizeof(char));

            MPI_Info_get(users_info, "striping_factor", MPI_MAX_INFO_VAL, 
                         value, &flag);
            if (flag) {
                str_factor=atoi(value);
                tmp_val = str_factor;
                MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
                if (tmp_val != str_factor) {
                    FPRINTF(stderr, "ADIOI_PVFS_SetInfo: the value for key \"striping_factor\" must be the same on all processes\n");
                    MPI_Abort(MPI_COMM_WORLD, 1);
                }
                else MPI_Info_set(fd->info, "striping_factor", value);
            }

            MPI_Info_get(users_info, "striping_unit", MPI_MAX_INFO_VAL, 
                         value, &flag);
            if (flag) {
                str_unit=atoi(value);
                tmp_val = str_unit;
                MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
                if (tmp_val != str_unit) {
                    FPRINTF(stderr, "ADIOI_PVFS_SetInfo: the value for key \"striping_unit\" must be the same on all processes\n");
                    MPI_Abort(MPI_COMM_WORLD, 1);
                }
                else MPI_Info_set(fd->info, "striping_unit", value);
            }

            MPI_Info_get(users_info, "start_iodevice", MPI_MAX_INFO_VAL, 
                         value, &flag);
            if (flag) {
                start_iodev=atoi(value);
                tmp_val = start_iodev;
                MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
                if (tmp_val != start_iodev) {
                    FPRINTF(stderr, "ADIOI_PVFS_SetInfo: the value for key \"start_iodevice\" must be the same on all processes\n");
                    MPI_Abort(MPI_COMM_WORLD, 1);
                }
                else MPI_Info_set(fd->info, "start_iodevice", value);
            }

            MPI_Info_get(users_info, "romio_pvfs_listio_read", MPI_MAX_INFO_VAL,
                            value, &flag);
            if (flag) {
                    if ( !strcmp(value, "enable") || !strcmp(value, "ENABLE")) 
                    {
                            MPI_Info_set(fd->info, "romio_pvfs_listio_read", value);
                            fd->hints->fs_hints.pvfs.listio_read = ADIOI_HINT_ENABLE;
                    } else if ( !strcmp(value, "disable") || !strcmp(value, "DISABLE")) 
                    {
                            MPI_Info_set(fd->info , "romio_pvfs_listio_read", value);
                            fd->hints->fs_hints.pvfs.listio_read = ADIOI_HINT_DISABLE;
                    }
                    else if ( !strcmp(value, "automatic") || !strcmp(value, "AUTOMATIC")) 
                    {
                            MPI_Info_set(fd->info, "romio_pvfs_listio_read", value);
                            fd->hints->fs_hints.pvfs.listio_read = ADIOI_HINT_AUTO;
                    }
                    tmp_val = fd->hints->fs_hints.pvfs.listio_read;
                    MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
                    if (tmp_val != fd->hints->fs_hints.pvfs.listio_read) {
                            FPRINTF(stderr, "ADIOI_PVFS_SetInfo: the value for key \"romio_pvfs_listio_read\" must be the same on all processes\n");
                            MPI_Abort(MPI_COMM_WORLD, 1);
                    }
            }
            MPI_Info_get(users_info, "romio_pvfs_listio_write", MPI_MAX_INFO_VAL,
                            value, &flag);
            if (flag) {
                    if ( !strcmp(value, "enable") || !strcmp(value, "ENABLE")) 
                    {
                            MPI_Info_set(fd->info, "romio_pvfs_listio_write", value);
                            fd->hints->fs_hints.pvfs.listio_write = ADIOI_HINT_ENABLE;
                    } else if ( !strcmp(value, "disable") || !strcmp(value, "DISABLE")) 
                    {
                            MPI_Info_set(fd->info, "romio_pvfs_listio_write", value);
                            fd->hints->fs_hints.pvfs.listio_write = ADIOI_HINT_DISABLE;
                    }
                    else if ( !strcmp(value, "automatic") || !strcmp(value, "AUTOMATIC")) 
                    {
                            MPI_Info_set(fd->info, "romio_pvfs_listio_write", value);
                            fd->hints->fs_hints.pvfs.listio_write = ADIOI_HINT_AUTO;
                    }
                    tmp_val = fd->hints->fs_hints.pvfs.listio_write;
                    MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
                    if (tmp_val != fd->hints->fs_hints.pvfs.listio_write) {
                            FPRINTF(stderr, "ADIOI_PVFS_SetInfo: the value for key \"romio_pvfs_listio_write\" must be the same on all processes\n");
                            MPI_Abort(MPI_COMM_WORLD, 1);
                    }
            }               
            ADIOI_Free(value);
        }
    }   

    /* set the values for collective I/O and data sieving parameters */
    ADIOI_GEN_SetInfo(fd, users_info, error_code);

    *error_code = MPI_SUCCESS;
}

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