Bug 1330320 – make pmdapapi counters multi-cpu

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Bug 1330320 - make pmdapapi counters multi-cpu

Summary:	make pmdapapi counters multi-cpu

Status:	NEW

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	pcp (Show other bugs)
Sub Component:
Version:	25
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
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Assigned To:	pcp-maint
QA Contact:	Fedora Extras Quality Assurance
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Reported:	2016-04-25 17:26 EDT by Frank Ch. Eigler
Modified:	2017-08-23 11:14 EDT (History)
CC List:	7 users (show)

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Doc Type:	Bug Fix
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Description Frank Ch. Eigler 2016-04-25 17:26:10 EDT

It turns out that the PAPI API does not transparently implement systemwide counters for us.  We are connecting only to cpu#0.

See the papi pernode.c test case.  Key words:

granularity - PAPI_GRN_SYS_CPU
ncpu = PAPI_get_opt(PAPI_MAX_CPUS, NULL);
the resulting values[] array should be sized ncpu-multiplied & indexed.

Comment 1 Frank Ch. Eigler 2016-04-25 17:39:52 EDT

Or instead, depending on the particular version of papi, we may manually need to do PAPI_CPU_ATTACH calls for replicated EventSets & values.

Comment 2 Jan Kurik 2016-07-26 00:49:54 EDT

This bug appears to have been reported against 'rawhide' during the Fedora 25 development cycle.
Changing version to '25'.

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