On Thu, May 20, 2021 at 04:57:03AM +1000, David Airlie wrote:
> > On Tue, May 18, 2021 at 04:59:50PM -0600, Jeff Law wrote:
> > >
> > > On 5/18/2021 4:44 PM, David Airlie wrote:
> > > > https://kojipkgs.fedoraproject.org//work/tasks/3814/68223814/build.log
> > > >
> > > > cd
> > > > /builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/i686-redhat-linux-gnu/layers
> > > > && /usr/bin/g++ -DAPI_NAME=\"Vulkan\" -DVK_ENABLE_BETA_EXTENSIONS
> > > > -DVK_USE_PLATFORM_WAYLAND_KHR -DVK_USE_PLATFORM_WAYLAND_KHX
> > > > -DVK_USE_PLATFORM_XCB_KHR -DVK_USE_PLATFORM_XCB_KHX
> > > > -DVK_USE_PLATFORM_XLIB_KHR -DVK_USE_PLATFORM_XLIB_KHX
> > > > -DVK_USE_PLATFORM_XLIB_XRANDR_EXT -DVkLayer_khronos_validation_EXPORTS
> > > > -I/builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/layers
> > > > -I/builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/layers/generated
> > > > -I/usr/include/glslang -I/usr/include/spirv/include
> > > > -I/builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/i686-redhat-linux-gnu
> > > > -I/builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/i686-redhat-linux-gnu/layers
> > > > -O2 -flto=auto -ffat-lto-objects -fexceptions -g1
> > > > -grecord-gcc-switches -pipe -Wall -Werror=format-security
> > > > -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
> > > > -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> > > > -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1
> > > > -m32 -march=i686 -mtune=generic -msse2 -mfpmath=sse -mstackrealign
> > > > -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection
> > > > -Wpointer-arith -Wno-unused-function -Wno-sign-compare -DNDEBUG -fPIC
> > > > -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
> > > > -fno-strict-aliasing -fno-builtin-memcmp -fvisibility=hidden
> > > > -Wimplicit-fallthrough=0 -std=gnu++11 -MD -MT
> > > > layers/CMakeFiles/VkLayer_khronos_validation.dir/generated/chassis.cpp.o
> > > > -MF CMakeFiles/VkLayer_khronos_validation.dir/generated/chassis.cpp.o.d
> > > > -o CMakeFiles/VkLayer_khronos_validation.dir/generated/chassis.cpp.o
> > > > -c
> > > > /builddir/build/BUILD/Vulkan-ValidationLayers-sdk-1.2.176.1/layers/generated/chassis.cpp
> > > > cc1plus: out of memory allocating 65536 bytes after a total of
> > > > 3310292992 bytes
> > > >
> > > > We already use -g1 to try and reduce memory usage, and I tried not
> > > > doing parallel jobs in case it was too much? any suggestions, is this
> > > > LTO?
> > >
> > > Not likely LTO since this isn't a link phase AFAICT.
> >
> > And parallel jobs reduction isn't likely to help out, it looks like the
> > single cc1plus process is hitting the 3GB/1GB split anyhow. ;(
>
> Oh wow I forgot that existed, so it's not even a VM configuration issue.
>
> I'll go reproduce somewhere locally and experiment in more detail by
> removing my hair.
As a start, it would be useful to have preprocessed source so that it can be
looked at without the rest of the package.
One interesting thing is try to compile it (the preprocessed testcase with
the same command line options) on x86_64 with -m32 -fmem-report and see
where the memory is spent there (of course, on x86_64 it will take slightly
more memory as pointers are larger).
Removing -flto could save some memory; otherwise, it ddepends on where most
of the memory goes, if into optimizations, perhaps disable some of them or
compile with -O1 etc., either for the whole file or just some of the largest
functions. If the memory is eaten already in the C++ FE, like instantiation
of excessively large (or too many) templates, then splitting the source
might be the only way to make it compile.
Jakub
_______________________________________________
devel mailing list -- devel@lists.fedoraproject.org
To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Do not reply to spam on the list, report it:
https://pagure.io/fedora-infrastructure
