Differences

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--- hpc:faq [2026/02/02 10:15] – [Cost] Yann Sagon
+++ hpc:faq [2026/04/30 06:49] (current) – Yann Sagon
@@ Line 14: / Line 14: @@
 ??? Which cluster should I use ?
+!!! You can use the three clusters, but see [[hpc:hpc_clusters#hpc_clusters_the_clusters|this link]] to help you choose the right cluster.
-!!! You can use the three clusters, but see [[hpc:hpc_clusters#the_clustersbaobab_and_yggdrasil|this link]] to help you choose the right cluster.
 ??? Must I include citations and acknowledgments in my publication?
@@ Line 38: / Line 37: @@
 =?=== Cost ====
+??? What do you mean by 'billing metric' when discussing HPC usage and cost?
+!!! Due to the significant variation in GPU models and RAM usage, we now apply a uniform resource accounting system by converting GPU hours and memory usage into CPU-hour equivalents. This metric is called [[accounting#resource_accounting_uniformization|billing]].
 ??? I'm using Open XDMoD to check how many hours my group used this year, but the amount is quite different from what appears on the invoice or in ''ug_slurm_usage_per_user.py''.
 !!! For invoicing, we use a Slurm metric called billing. This metric aggregates CPU hours, memory usage, and GPU usage. Unfortunately, Open XDMoD does not currently support this metric and therefore does not take into account GPU type or memory usage. We have added a warning about this in [[accounting#openxdmod|Open XDMoD documentation]]