17 Jul
2017
17 Jul
'17
9:08 a.m.
On Jul 17, 2017, at 10:48 AM, Christophe Lyon christophe.lyon@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