Hi Stephane

We are preparing to move to the Fedora 12 distribution which comes with the
2.6.31 kernel.

This kernel already contains the perf_events code from Ingo plus you have
built libpfm4 to work with it and papi-3.7.0 has early support for this
subsystem.

But I have not seen any mention of a pfmon that will be able to use it and
perf_events does not yet support uncore events on Nehalem (events that we
think provide important information).  Although pfmon is an important tool
for us, our primary use with be with hpctoolkit through papi.

We are now in a position where we need to decide if it is time to move to
perf_events (and hope things improve fairly rapidly) or stay on perfmon (a
much more comfortable idea) for this next release.

>From your point of view:

Do you feel that perf_events is ready to be used by customers  using x86_64
Nehalem systems ??

Do you plan to provide a set of perfmon2 kernel patches for the 2.6.31
kernel ??

Do you plan to produce a pfmon which will work with perf_events ??

And of course that ugly thing called schedules always gets in the way so if
you have plans to do these, could you give a rough idea where it sits on
your priority list (or even better about how long before it may be
available) that would be useful.

Thanks
Gary


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