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--- hpc:accounting [2026/03/19 13:51] – Yann Sagon
+++ hpc:accounting [2026/04/20 09:15] (current) – [Aggregate usage by all users of a given PI] Yann Sagon
@@ Line 253: / Line 253: @@
 </code>
+=== Usage balance ===
+''ug_billing_synthesis'' is a command-line tool that provides a yearly billing overview for a Principal Investigator (PI).
+The script aggregates:
+  * the billing credit coming from private partitions (including co-owned private groups),
+  * the free billing credit,
+  * the total available billing,
+  * the actual billing consumption,
+  * and the resulting balance.
+When a PI belongs to one or more private groups, the script automatically detects them and displays a detailed breakdown of the billing credit per private group.
+The output can be displayed either as a human‑readable console report or as a JSON structure suitable for further processing or integration into other tools.
+This script is intended to give PIs and HPC administrators a clear and consolidated view of billing availability versus consumption for a given year.
+<code>
+(baobab)-[root@login1 ~]$ ug_billing_synthesis --pi xxx
+Billing synthesis for PI: xxx (2026)
+  Private partition billing : 3'420'780.0
+  Free billing              : 100'000
+  Total billing available   : 3'520'780.0
+  Billing consumed          : 939'476
+  Balance                   : 2'581'304.0
+  Private groups billing:
+    private_xxxx             : 309'228.0
+    private_yyyx             : 3'111'552.0
+</code>