[Lustre-devel] [Lustre-discuss] a new Lustre ADIO driver

Robert Latham robl at mcs.anl.gov
Wed Nov 12 09:35:48 PST 2008

On Wed, Nov 05, 2008 at 02:46:41PM +0800, emoly.liu wrote:
> Hi,
> Here is some description and performance results for the new Lustre ADIO  
> driver. You might be interested.
> The main purpose of the new lustre adio driver is to collect the small  
> size I/O requests into fewer number of larger ones according to Lustre's  
> striping feature with low overhead automatically. We also provide some  
> hints for performance tuning.
> In the following graph, the recent FLASH I/O benchmarking result shows  
> that the new driver performs much better than the old one, especially  
> for a large-scale system.
> In this test, FLASH I/O blocksize is 4*4*4 that means each 3 clients  
> write 40KB, 40.5KB and 42KB respectively. The I/O operation iteration  
> (nvar) is set to 1024.

Hi LiuYing

Since this patch is for ROMIO and not really for Lustre, could you
send this to romio-maint at mcs.anl.gov ?  It will reach more of the
ROMIO developers that way.


Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B

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