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document that starpu_machine_display shows combined workers

Samuel Thibault %!s(int64=13) %!d(string=hai) anos
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      doc/chapters/advanced-examples.texi

+ 5 - 0
doc/chapters/advanced-examples.texi

@@ -900,6 +900,11 @@ For example : if the user specifies a minimum and maximum combined workers size
 of 3 on a machine containing 8 CPUs, StarPU will create a combined worker of
 of 3 on a machine containing 8 CPUs, StarPU will create a combined worker of
 size 2 beside the combined workers of size 3.
 size 2 beside the combined workers of size 3.
 
 
+The combined workers actually produced can be seen in the output of the
+@code{starpu_machine_display} tool (the @code{STARPU_SCHED} environment variable
+has to be set to a combined worker-aware scheduler such as @code{pheft} or
+@code{pgreedy}).
+
 @subsection Concurrent parallel tasks
 @subsection Concurrent parallel tasks
 
 
 Unfortunately, many environments and librairies do not support concurrent
 Unfortunately, many environments and librairies do not support concurrent