[gpfsug-discuss] Spectrum Scale, InfiniBand and QoS

[Luis Bolinches]

Hi

Assuming you are talking about GPFS QoS and not any fabric QoS. It would work with any supported fabric, ESS or not. It is a filesystem feature well above all the fabrics and HW. Limits IOPS per class

https://www.ibm.com/docs/en/storage-scale/5.1.8?topic=reference-mmchqos-command

I recommend (depending on number of nodes and seconds) fine-stats so then you can visualize which PID on which client node is doing what. I believe I did something of that on SSUG London 18 or 19

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From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> On Behalf Of Thomas Bernecker
Sent: Thursday, 7 September 2023 11.36
To: gpfsug-discuss at gpfsug.org
Subject: [EXTERNAL] [gpfsug-discuss] Spectrum Scale, InfiniBand and QoS

Dear all, we recently found this presentation from 2021: https: //www. spectrumscaleug. org/wp-content/uploads/2021/05/SSSD21DE-06-Improving-Spectrum-Scale-performance-using-RDMA. pdf On page 10 it explains by setting the RDMA device in a specific
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Dear all,

we recently found this presentation from 2021: https://www.spectrumscaleug.org/wp-content/uploads/2021/05/SSSD21DE-06-Improving-Spectrum-Scale-performance-using-RDMA.pdf<https://www.spectrumscaleug.org/wp-content/uploads/2021/05/SSSD21DE-06-Improving-Spectrum-Scale-performance-using-RDMA.pdf> On page 10 it explains by setting the RDMA device in a specific way one could employ QoS with InfiniBand, which is something we would like to achieve as well. Has anyone a working environment using QoS with InfiniBand outside of the ESS domain? If so, would you share your experience? Sorry for asking a rather broad question, but it seems that this is not well-known stuff …


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Best regards / Mit freundlichem Gruß
Thomas Bernecker
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