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Hi, An optimized Lustre ADIO collective write driver is developed by ORNL and SUN Lustre group. We improve the relationship between collective MPI-IO and the Lustre striping. The recent FLASH I/O benchmarking results on Jaguar show that our new driver gives significant performance improvements in the following graph. In this test, we compare ufs independent driver, ufs optimized collective driver to lustre adio driver.  At present, the patch for mpich2-1.0.7 is worked out and maintained in HEAD branch. It should be released soon. Thanks, LiuYing Jim Williams wrote: When running an earlier version of lustre (1.4.6) we had partial mpi-io support. Since upgrading to 1.4.11, that seems to have disappeared. The version that we're running is a local compile & 1.4.6 was provided by Sun when we deployed the machine. After searching the list archives I see references to the adio driver in the contrib tree & I suspect that the person who built the version that we're running didn't include it. Is that the only missing component or do I need to do anything else to get mpi-io to work? Thanks in advance. -- Best regards, LiuYing System Software Engineer, Lustre Group Sun Microsystems ( China ) Co. Limited |
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