[cdwg] Lustre 2.5 Development Planning

Frederik Ferner frederik.ferner at diamond.ac.uk
Tue Jun 4 11:03:33 PDT 2013


We'd like to see better performance for single client single process 
writes to single files, though I can see this might be more a longer 
term goal. I'm not sure there even is a ticket for this that I could 
reference, LU-744 comes close but I'm not sure it fully covers it.

In our case it is tomography detectors writing single large files from 
on machine that will later be processed on clusters and writing we are 
no where near to saturating either the disks or the network links. It 
seems copying the data from userspace to kernel space on the client 
might be the bottleneck.

Cheers,
Frederik

-- 
Frederik Ferner
Senior Computer Systems Administrator   phone: +44 1235 77 8624
Diamond Light Source Ltd.               mob:   +44 7917 08 5110
(Apologies in advance for the lines below. Some bits are a legal
requirement and I have no control over them.)

-- 
This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. 
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
 






More information about the cdwg mailing list