Hi, Does anybody have any idea why this is happening?
Thanks and Regards, Christina. On Tue, Jul 14, 2009 at 1:47 PM, Christina Patrick<[email protected]> wrote: > Hi Kevin, > > Yes, I am using mpich2-1.0.8 and pvfs2.8.0. > > Regards, > Christina. > > On Tue, Jul 14, 2009 at 12:40 PM, Kevin Harms<[email protected]> wrote: >> Christina, >> >> you are using MPICH2 and the ad_pvfs2 romio module? >> >> kevin >> >> On Jul 14, 2009, at 9:12 AM, Christina Patrick wrote: >> >>> Hi Everybody, >>> >>> I want to use MPI hints to create a striped file across a subset of >>> the pvfs2 servers. For that I use, the hints "striping_unit" and >>> "striping_factor". I have a set of three I/O servers. However, I want >>> to create the file only on one I/O server. I specified "striping_unit" >>> = 65536 and "striping_factor" = 1. However, after the file is created, >>> I get the following results: >>> >>> pvfs2-viewdist -f /home/mdl/patrick/pvfs2/oneserver >>> dist_name = simple_stripe >>> dist_params: >>> strip_size:65536 >>> >>> Metadataserver: tcp://aum14:7000 >>> Number of datafiles/servers = 3 >>> Datafile 0 - tcp://aum15:7000, handle: 9223372036854775298 >>> (7ffffffffffffe02.bstream) >>> Datafile 1 - tcp://aum13:7000, handle: 4611686018427387650 >>> (3fffffffffffff02.bstream) >>> Datafile 2 - tcp://aum14:7000, handle: 4611686018427387905 >>> (4000000000000001.bstream) >>> >>> Am I missing something? I wanted to use this hint, so that I don't >>> have to reconfigure the servers everytime, I want to change the number >>> of I/O servers. >>> Could somebody please help me? >>> >>> Thanks and Regards, >>> Christina. >>> >>> PS: The extract from my program which does this: >>> 79 MPI_Info_create(&file_info); >>> 80 >>> 81 if(argc > 1) { >>> 82 stripe_unit = atoi(argv[1]); >>> 83 sprintf(stripe_unit_str, "%d", stripe_unit); >>> 84 MPI_Info_set(file_info, "striping_unit", stripe_unit_str); >>> 85 } >>> 86 >>> 87 if(argc > 2) { >>> 88 stripe_factor = atoi(argv[2]); >>> 89 sprintf(stripe_factor_str, "%d", stripe_factor); >>> 90 MPI_Info_set(file_info, "striping_factor", stripe_factor_str); >>> 91 } >>> 92 >>> 93 MPI_File_open(MPI_COMM_WORLD, fname, MPI_MODE_CREATE | >>> MPI_MODE_WRONLY, file_info, &fhandle); >>> _______________________________________________ >>> Pvfs2-developers mailing list >>> [email protected] >>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers >> >> > _______________________________________________ Pvfs2-developers mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers
