Using lfs setstripe on stampede Francois Gygi https://conferences.xsede.org/c/message_boards/find_message?p_l_id=&messageId=545976 2013-06-25T18:33:54Z 2013-06-25T06:12:24Z

When writing a 15 GB file on the stampede $SCRATCH file system, our application (Qbox) achieves an aggregate write rate of 85 MB/s (writing from 1024 tasks using MPI-IO). On ranger, we used to improve this considerably by setting the stripe count of the file (before writing it) using lfs setstripe -c 32 filename.<br />We tried this on stampede, but it causes the MPI-IO call to hang and the resulting file size is zero. <br />Does anyone know how to use striped files on stampede? <br />Thanks

Francois Gygi 2013-06-25T06:12:24Z