similar to: [Lustre-discuss] MD benchmarking with mdtest

Hi, I have a query regarding Lustre Throughput Numbers with mdtest benchmark.I am running mdtest benhmark with following options :- /home/meshram/mpich2-new/mpich2-1.4/mpich2-install/bin/mpirun -np 256 -hostfile ./hostfile ./mdtest -z 3 -b 10 -I 5 -v -d /tmp/l66 where , mdtest - is the standard benchmark to test metadata operations. [ https://computing.llnl.gov/?set=code&page=sio_downloads

Hi, I have a query regarding Lustre Throughput Numbers with mdtest benchmark.I am running mdtest benhmark with following options :- /home/meshram/mpich2-new/mpich2-1.4/mpich2-install/bin/mpirun -np 256 -hostfile ./hostfile ./mdtest -z 3 -b 10 -I 5 -v -d /tmp/l66 where , mdtest - is the standard benchmark to test metadata operations. [ https://computing.llnl.gov/?set=code&page=sio_downloads

Hi all, We are pleased to announce that Lustre 2.0 Alpha7 is available for download. This is our next step in a series of milestone based pre-releases as we move towards Lustre 2.0 GA. This alpha includes 125 fixes since the Alpha 6 milestone. Alpha Milestone Criteria: * Tested for RHEL5/OEL5 x86_64 * Basic functional and recovery testing is passing consistently * FC11 clients

Hi all, We are pleased to announce that Lustre 2.0 Alpha7 is available for download. This is our next step in a series of milestone based pre-releases as we move towards Lustre 2.0 GA. This alpha includes 125 fixes since the Alpha 6 milestone. Alpha Milestone Criteria: * Tested for RHEL5/OEL5 x86_64 * Basic functional and recovery testing is passing consistently * FC11 clients

It has been a few months since the initial release of MDTest. I haven't changed the testsuites much since then, but I've made a few noticeable improvement to the test processor itself. You can download MDTest here: <http://michelf.com/docs/projets/mdtest-1.1.zip> MDTest is also available now from the Git repository mirror at <http://git.michelf.com/mdtest>. MDTest

I'm announcing today a new testsuite application for Markdown called MDTest. I've been using it as a replacement for John's Markdown Test for some time now I think it's ready for release. First, I want to say Markdown Test has been very useful in developing PHP Markdown. The testsuite covers many cases, however I still found the need to add other tests for PHP Markdown, to

Dear All, We have a small setup of lustre with 7 OSTs on 8gb FC . We have kept one OST per FC port. We have lustre 2.3 with CentOS 6.3. There are 32 clients which access this over FDR IB. We can achieve more than 1.3GB/s throughput using IOR, without cache. Which is roughly 185MB/s per OST. We wanted to know if this is normal. Should we expect more from 8gb FC port. OSTs are on 8+2 RAID6 .

Greetings Community! Today we are very excited to announce that Xyratex has purchased Lustre? and its assets from Oracle. We intend for Lustre to remain an open-source, community-driven file system to be promoted by our community organizations. We undertook the acquisition because we realize its importance to the entire community and we want to help ensure that it will continue to deliver for all

Hello, I have been reading http://wiki.lustre.org/images/1/1b/Hadoop_wp_v0.4.2.pdf for setting up Hadoop over lustre. Generally in hadoop setup, we have 1 Namenode and various number of datanodes. If I want to setup the same keeping Lustre as backend, in the document it is mentioned that: ".............Our experiments run on cluster with 8 nodes in total, one is mds/namenode, the rest are

This may be in the documentation. If so, I missed it. If a site has multiple Lustre file systems, the documentation implies that there only needs to be a single MGS for an entire site (regardless of the number of file systems). However, I also know it is fairly common to have a combined MGS/MDT. So here are the questions. 1. If we are going to have several Lustre file systems,

In hopes of improving the quality, coverage, and currency of the Lustre User Manual, I''m putting out a call to the Lustre community for contributors to this important resource. The user manual is especially important for new users to Lustre, but has fallen into some disrepair now that there is no longer a dedicated documentation writer for it. As well, there are many sections of the

In hopes of improving the quality, coverage, and currency of the Lustre User Manual, I''m putting out a call to the Lustre community for contributors to this important resource. The user manual is especially important for new users to Lustre, but has fallen into some disrepair now that there is no longer a dedicated documentation writer for it. As well, there are many sections of the

We are seeing some disturbing (probably due to our ignorance) behavior from lustre 1.6.3 right now. We have 8 OSSs with 3 OSTs per OSS (24 physical LUNs). We just created a brand new lustre file system across this configuration using the default mkfs.lustre formatting options. We have this file system mounted across 400 clients. At the moment, we have 63 IOzone threads running

Hello, I have a troubling issue with random file corruption using either lustre 1.8.6 (internal Cray lustre) and lustre 2.1 (sonexion - produced by xyratex). Randomly, our users will come across an issue with files either having 0 size, or being corrupted. The 0 size files are usually ascii files (which are normally created with simple cat and awk statements, serially), while the corrupted

Hello, 1) when compiling the lustre modules for the server the ./configure script behaves a bit odd. The --enable-server option is silently ignored when the kernel is not 100% patched. Unfortunatly the build works for the server, but during the mount the error message claims about a missing "lustre" module which is loaded and running. What is really missing are the ldiskfs et al

Coming to Hamburg next week ? The European Open File System (EOFS) and Open Scalable FileSystem (OpenSFS) would love to see you at ISC?12 June 17?-21, 2012, in Hamburg, Germany. Visit our booth (#765) to meet Lustre experts, participate in informative talks, ask hard questions, and join the various events we are hosting. First off, there''s a full scheduled of Lustre talks, each with

Coming to Hamburg next week ? The European Open File System (EOFS) and Open Scalable FileSystem (OpenSFS) would love to see you at ISC?12 June 17?-21, 2012, in Hamburg, Germany. Visit our booth (#765) to meet Lustre experts, participate in informative talks, ask hard questions, and join the various events we are hosting. First off, there''s a full scheduled of Lustre talks, each with

Coming to Hamburg next week ? The European Open File System (EOFS) and Open Scalable FileSystem (OpenSFS) would love to see you at ISC?12 June 17?-21, 2012, in Hamburg, Germany. Visit our booth (#765) to meet Lustre experts, participate in informative talks, ask hard questions, and join the various events we are hosting. First off, there''s a full scheduled of Lustre talks, each with

I notice that raid6 is recommended in the manual. eg. "...RAID6 is a must." http://manual.lustre.org/manual/LustreManual16_HTML/DynamicHTML-11-1.html which I found a bit surprising given that in Dec ''06 Peter Braam said on this list "Some of our customers experienced data corruption in the RAID6 layer.", and recommending the CFS optimised md raid5 path through the

With DCB 4.1 implemented by VBIOS since GM20x GPUs, SOR crossbar routing should be possible, such that any SOR sublink can drive any macro link. Unfortunately, there's at least one card where some SOR sublinks being connected to a particular macro link are causing failures. To work around this issue, supply a quirk for such cards which prevents a dynamic mapping of SOR sublink and macro link