Thursday 19th January 2012

This month's meetings

WorkingGroups/ToolChain/Meetings
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Attendees

  • Åsa Sandahl
  • Ken Werner
  • Michael Hope
  • Peter Maydell
  • Ramana Radhakrishnan
  • Ulrich Weigand
  • Zhenqiang Chen

Agenda

  • Stand up call

Minutes

Ken:

  • Working on external toolchain recipe
  • Built minimal, sato, and Qt builds
  • In -O2, -O3, and -O3 without vect
  • One small issue with binutils at -O3 with unused variable
  • Booting fine in QEMU, glitches on mouse and keyboard

Zhenqiang:

  • Fixing crosstool-NG bugs
  • Currently working on GDB on a Windows host
  • Changing path to build a static GDB
  • (but Michael has turned off the static build)
  • pkg-config doesn't build for Windows
  • Don't build, may not support cross building
  • Has one change, need more
  • No documentation on cross building

Peter:

  • Testing patches upstream that change types in QEMU soft float that give a good speedup
  • Wrote up how someone else can do qemu-linaro releases
  • Looked at test framework that upstream are considering
    • Framework for building cross compilers, sysroot, etc so you can run
  • Running set of FMAC tests against a FPGA A15
  • Seeing some weird things, may be the FPGA
  • Discussion upstream about secondary CPU boot
  • vexpress A15 model in QEMU

Ulrich:

  • Remote info proc and remote core generation
  • Implemented the latest version, posted, good feedback/agreement
  • One bug showed on IRIX, fixed
  • A few more days then commit
  • Richard's forward propagation patch
    • Helps with vector strided load blueprint
    • Exposes a regression in some very old code in combine
    • Discussed, conclusion is to remove the older code
    • Fixes problem on x86_64, need to re-benchmark on ARM to see if it still applies
  • Ramana sent WIP patches for VLD1
    • Familiarising, will be the next thing

Asa:

  • Collection numbers for coremark, eembc, spec, pybench
  • Uploaded into private-runs
  • Did a summary, sent to the mailing list
  • Will add -Os, -O3 with the vectoriser next
  • Next triaging bugs
  • Running through a few, triaging and incomplete'ing
  • Getting V8 built, looking at SunSpider on it, or the V8 included benchmark

  • Included one is simple to integrate...
  • Needs scons (Michael will install)

Ramana:

  • Two bugs
  • Generating PIC addresses and the constant pool
  • ...and a combine issue that presents the same
  • Handed off VLD1 to Ulrich
  • Reading into partial partial PRE
  • Revising theory

Michael:

  • Backports
    • cmpeq on di
    • a15 branch tuning
    • a7 support
  • Went through all config/arm commits
  • Better split for benchmarking
  • Started building the gcc-arm-embedded branch.
  • Answer building EGLIBC question
  • Build an A15 guest kernel and run
  • Look into OpenStack nova and libvirt

  • Look into FMA, scan some values
  • Binaries tidy up

WorkingGroups/ToolChain/Meetings/Archive/2012-01-19 (last modified 2013-08-30 11:50:01)