[LUDOC-267] Document Truescale tuning parameters publicly

• Status: Open
• Project: Lustre Documentation
• Type: Bug
• Priority: Major
• Reporter: Doug Oucharek (Inactive)
• Assignee: Lustre Manual Triage
• Resolution: Unresolved
• Severity: 3

Description

There was a slide deck done by our SEs showing what tuning parameter changes make Truescale run optimally with Lustre. This is marked Intel Confidential and none of the details have shown up in community documentation.

This ticket is to get this information into community documentation like the user manual to help direct sysadmins configure for best performance when dealing with Truescale.

Comments

[Chris Hunter (Inactive)]

Example truescale tuning parameters in these (publically available) presentations:
Openfabrics workshop 2015 https://www.openfabrics.org/index.php/2015-ofs-user-group-workshop.html

• "Intel Truescale" https://www.openfabrics.org/images/eventpresos/workshops2015/UGWorkshop/Friday/friday_02.pdf

Eofs LAD 15 http://www.eofs.eu/?id=lad15

• " Optimization of Lustre performance using a mix of fabric card" http://www.eofs.eu/fileadmin/lad2015/slides/16_Dmitri_Eremin_LAD15-mix_of_fabrics.pdf

FYI, LU-6735 introduced method for setting o2iblnd paramters based on IB hardware model. However the parameters chosen are not optimal for truescale QDR HCAs.