Hi Vince, Yeah, I noticed that when I was stracing a working perf but nothing else worked.
Also, I spent some time actually getting together a libpfm that works with Cray's distro perf_event.h in /usr/include/linux/perf_event.h. That required a number of changes and eventually worked. However, I decided to go back to the original and start again, and attached is the patch that I eventually got working. This is a Cray XC30 system, with paranoid == 2.
libpfm.diff
Description: Binary data
> On Jan 5, 2016, at 2:00 PM, Vince Weaver <vincent.wea...@maine.edu> wrote: > > On Mon, 4 Jan 2016, Philip Mucci wrote: > >> Right. The default however is currently to exclude_guest = 1, which is >> the problem. PAPI did not seem to rectify that setting… > > just a further comment, I complained to the kernel people about this mess > again but there doesn't seem to be much that can be done about it. > > The perf tool when it gets an EINVAL actually tries rolling back flags one > by one to handle this issue (see perf_missing_features in > perf/util/evesel.c). I'm not sure if it's worth moving something > similar into PAPI or libpfm4. > > Vince
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