> On Jul 17, 2017, at 10:48 AM, Christophe Lyon <christophe.l...@linaro.org>
> wrote:
>
> * Short week (Friday off)
>
> == Progress ==
> * Infrastructure/validation:
>
> * Benchmarking:
> - production scripts are now up-to-date, still observing noise on
> some benchmarks
I've investigate noise in 401.bzip2 (6%) and 436.cactusADM (10%). In both
cases the extra cycle counts were on memory instructions, which suggests
different memory or cache layout.
One of the things we can try is to reboot boards before high-accuracy runs to,
hopefully, get roughly the same physical addresses from the kernel.
We also should try adding cache-misses counters to perf sampling to
confirm/deny our assumptions about memory subsystem.
> - fixed a couple of small issues with the scripts
>
> * GCC upstream validation:
> - working on further reducing noise ("random" pass/failures)
> - reported/fixed a few regressions
> - committed testsuite patch with de-require-stack-check
> - looking at a problem with unaligned accesses
>
> * misc (conf-calls, meetings, emails, ....)
--
Maxim Kuvyrkov
www.linaro.org
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