[Mesa-dev] how to run gallium/tests/trivial/compute.c on r600
Tom Stellard
tom at stellard.net
Mon Nov 12 07:37:40 PST 2012
On Sun, Nov 11, 2012 at 11:12:48AM +0800, Liu Xin wrote:
> Hi, Tom,
>
> now i want to try out the new features of gallium/clover. I notice you have
> updated your wiki page for installation. with your new instruction, i can
> not build clang any more :(
>
> xliu at xliu-desktop:~/Development/llvm-tstellar/tools/clang$ make
> make[1]: Entering directory
> `/home/xliu/Development/llvm-tstellar/tools/clang/utils/TableGen'
> llvm[1]: Compiling ClangDiagnosticsEmitter.cpp for Debug+Asserts build
> ClangDiagnosticsEmitter.cpp:398:9: error: use of undeclared identifier
> 'PrintFatalError'; did you mean 'PrintError'?
> PrintFatalError(R.getLoc(), "Error " + R.getName() +
> ^~~~~~~~~~~~~~~
> PrintError
> /home/xliu/Development/llvm-tstellar/include/llvm/TableGen/Error.h:38:6:
> note: 'PrintError' declared here
> void PrintError(ArrayRef<SMLoc> ErrorLoc, const Twine &Msg);
> ^
> ClangDiagnosticsEmitter.cpp:398:37: error: no viable conversion from
> 'basic_string<char, std::char_traits<char>, std::allocator<char> >' to
> 'const llvm::Twine'
> PrintFatalError(R.getLoc(), "Error " + R.getName() +
> ^~~~~~~~~~~~~~~~~~~~~~~~
> /home/xliu/Development/llvm-tstellar/include/llvm/TableGen/Error.h:38:56:
> note: passing argument to parameter 'Msg' here
> void PrintError(ArrayRef<SMLoc> ErrorLoc, const Twine &Msg);
> ^
> ClangDiagnosticsEmitter.cpp:560:7: error: use of undeclared identifier
> 'PrintFatalError'; did you mean 'PrintError'?
> PrintFatalError("Invalid character in diagnostic group '" +
> ^~~~~~~~~~~~~~~
> PrintError
> /home/xliu/Development/llvm-tstellar/include/llvm/TableGen/Error.h:38:6:
> note: 'PrintError' declared here
> void PrintError(ArrayRef<SMLoc> ErrorLoc, const Twine &Msg);
> ^
> ClangDiagnosticsEmitter.cpp:561:37: error: too few arguments to function
> call, expected 2, have 1
> I->first + "'");
> ^
> /home/xliu/Development/llvm-tstellar/include/llvm/TableGen/Error.h:38:1:
> note: 'PrintError' declared here
> void PrintError(ArrayRef<SMLoc> ErrorLoc, const Twine &Msg);
> ^
> 4 errors generated.
> make[1]: ***
> [/home/xliu/Development/llvm-tstellar/tools/clang/utils/TableGen/Debug+Asserts/ClangDiagnosticsEmitter.o]
> Error 1
> make[1]: Leaving directory
> `/home/xliu/Development/llvm-tstellar/tools/clang/utils/TableGen'
> make: *** [all] Error 1
>
>
>
> here is my clang version. i think that it is the latest version. is there
> anything mismatching or clang 's new checkin is broken?
>
> xliu at xliu-desktop:~/Development/llvm-tstellar/tools/clang$ git log
> commit a6600a339fee660cac2bd9b04cf578fa47ed491d
> Author: Nico Weber <nicolasweber at gmx.de>
> Date: Sun Nov 11 01:35:05 2012 +0000
>
> FileCheckize test
>
> git-svn-id:
> https://llvm.org/svn/llvm-project/cfe/trunk@16768091177308-0d34-0410-b5e6-96231b3b80d8
>
Your checkout of clang is too new. You should checkout out clang
commit: 160f835dab76bb64249f2785ccc4a53efec1cc50
I've added this commit to the build instruction on the wiki:
http://dri.freedesktop.org/wiki/GalliumCompute
-Tom
>
> thanks,
> --lx
>
>
>
> On Tue, Oct 9, 2012 at 9:44 PM, Tom Stellard <tom at stellard.net> wrote:
>
> > On Fri, Oct 05, 2012 at 10:24:00PM +0800, Liu Xin wrote:
> > > Hi, Tom,
> > >
> > > thanks for your kind guidance. within a daunting day, we have made clover
> > > work on our APU platform. for your information, we are running on ubuntu
> > > 12-04, i386.
> > >
> > > out of curiosity, r600 driver relies on the newest llvm API, see llvm
> > 3.2.
> > > is it stable? we know LLVM is a fast moving project and their APIs are
> > > subject to change year by year. I assume you are working tightly to llvm
> > > 3.2 because AMD backend will merge to trunk, right? we ask this question
> > > because android-x86 can not support up-to-date llvm. it only has llvm 2.8
> > > now. we may port a certain version of llvm to satisfy with android and
> > > mesa.
> > >
> >
> > The version of the backend included in the Mesa tree will work with LLVM
> > 3.1, but
> > I don't expect much more development to happen on this version, so it
> > is recommended that you upgrade to LLVM 3.2
> >
> > LLVM 3.2 is not stable yet, but it will be in a month or two. I would
> > like to get the backend merged into the LLVM tree prior to the 3.2
> > release, but it's uncertain whether or not this will happen.
> >
> > -Tom
> >
> > > thanks,
> > > --lx
> > >
> > >
> > > On Thu, Oct 4, 2012 at 11:04 PM, Alex Deucher <alexdeucher at gmail.com>
> > wrote:
> > >
> > > > On Thu, Oct 4, 2012 at 10:53 AM, Tom Stellard <tom at stellard.net>
> > wrote:
> > > > > On Thu, Oct 04, 2012 at 10:42:45PM +0800, Liu Xin wrote:
> > > > >> Hi, Tom,
> > > > >>
> > > > >> thank you for your instant response. we decide to try clover for
> > r600.
> > > > it
> > > > >> should work on ubuntu(11.10), right?
> > > > >> have you refined tgsi compiler for r600?
> > > > >>
> > > > >
> > > > > Build instructions for clover + r600g are here:
> > > > > http://dri.freedesktop.org/wiki/GalliumCompute#How_to_Install
> > > > > these should work on most any distro.
> > > > >
> > > > > We are in the process of transitioning from LLVM 3.2 to LLVM 3.1, so
> > > > > these instructions may change in the near future.
> > > >
> > > > 3.1 to 3.2 ;)
> > > >
> > > > >
> > > > > There are no plans to update the r600g tgsi compiler to handle TGSI
> > > > > compute instructions. LLVM IR is the preferred IR for compute
> > programs,
> > > > > and it is well supported.
> > > > >
> > > > > -Tom
> > > > >
> > > > >
> > > > >> thanks,
> > > > >> --lx
> > > > >>
> > > > >>
> > > > >>
> > > > >>
> > > > >>
> > > > >> On Thu, Oct 4, 2012 at 9:42 PM, Tom Stellard <tom at stellard.net>
> > wrote:
> > > > >>
> > > > >> > On Wed, Oct 03, 2012 at 08:15:07PM +0800, Liu Xin wrote:
> > > > >> > > Hi, Gallium Hackers,
> > > > >> > >
> > > > >> > > We are working on Gallium3D on android-x86, APU. We want to run
> > > > general
> > > > >> > > compute programs on r600 GPU, specifically, "Radeon
> > HD6310(Evergreen
> > > > >> > > family)".
> > > > >> > >
> > > > >> > > The first thing drawn our eyes are
> > gallium/tests/trivial/compute.c
> > > > >> > because
> > > > >> > > it calls general compute APIs and attempts to execute tgsi
> > programs
> > > > on a
> > > > >> > > back-end. unfortunately, we failed to execute it even we have
> > > > >> > pipe_r600.so
> > > > >> > > on android-x86. now we have a healthy android-x86 and it
> > supports
> > > > opengl
> > > > >> > > well. further, we can run tri.c under tests/trivial/ directory
> > as
> > > > well.
> > > > >> > >
> > > > >> >
> > > > >> > The gallium/tests/trivial/compute.c program won't work on r600g,
> > > > because
> > > > >> > the driver only supports compute programs written in LLVM IR and
> > not
> > > > >> > TGSI.
> > > > >> >
> > > > >> > There are some example OpenCL programs here:
> > > > >> > http://cgit.freedesktop.org/~tstellar/opencl-example/
> > > > >> > that work with r600g. Make sure you build Mesa with the
> > > > --enable-opencl
> > > > >> > configure flag.
> > > > >> >
> > > > >> > If you don't want to use OpenCL and just want to play with the
> > Gallium
> > > > >> > compute interface, you can replace the TGSI program with LLVM IR.
> > > > >> > You can use the LLVM C API builder interface to create a program
> > (see:
> > > > >> > http://llvm.org/docs/doxygen/html/Core_8h.html) or you can write
> > the
> > > > >> > LLVM IR by hand and then parse it into LLVM bitcode (I think there
> > > > are C
> > > > >> > API functions that will do this too).
> > > > >> >
> > > > >> >
> > > > >> > Hope this helps.
> > > > >> >
> > > > >> > -Tom
> > > > >> > > let's take a simple example. can a kind person give us pointers?
> > > > >> > > static void test_resource_access(struct context *ctx)
> > > > >> > > {
> > > > >> > > const char *src = "COMP\n"
> > > > >> > > "DCL RES[0], BUFFER, RAW, WR\n"
> > > > >> > > "DCL RES[1], 2D, RAW, WR\n"
> > > > >> > > "DCL SV[0], BLOCK_ID[0]\n"
> > > > >> > > "DCL TEMP[0], LOCAL\n"
> > > > >> > > "DCL TEMP[1], LOCAL\n"
> > > > >> > > "IMM UINT32 { 15, 0, 0, 0 }\n"
> > > > >> > > "IMM UINT32 { 16, 1, 0, 0 }\n"
> > > > >> > > "\n"
> > > > >> > > " BGNSUB\n"
> > > > >> > > " UADD TEMP[0].x, SV[0].xxxx,
> > SV[0].yyyy\n"
> > > > >> > > " AND TEMP[0].x, TEMP[0], IMM[0]\n"
> > > > >> > > " UMUL TEMP[0].x, TEMP[0], IMM[1]\n"
> > > > >> > > " LOAD TEMP[0].xyzw, RES[0], TEMP[0]\n"
> > > > >> > > " UMUL TEMP[1], SV[0], IMM[1]\n"
> > > > >> > > " STORE RES[1].xyzw, TEMP[1], TEMP[0]\n"
> > > > >> > > " RET\n"
> > > > >> > > " ENDSUB\n";
> > > > >> > > void init0(void *p, int s, int x, int y) {
> > > > >> > > *(float *)p = 8.0 - (float)x;
> > > > >> > > }
> > > > >> > > void init1(void *p, int s, int x, int y) {
> > > > >> > > *(uint32_t *)p = 0xdeadbeef;
> > > > >> > > }
> > > > >> > > void expect(void *p, int s, int x, int y) {
> > > > >> > > *(float *)p = 8.0 - (float)((x + 4*y) & 0x3f);
> > > > >> > > }
> > > > >> > >
> > > > >> > > printf("- %s\n", __func__);
> > > > >> > >
> > > > >> > > init_prog(ctx, 0, 0, 0, src, NULL);
> > > > >> > > init_tex(ctx, 0, PIPE_BUFFER, true,
> > PIPE_FORMAT_R32_FLOAT,
> > > > >> > > 256, 0, init0);
> > > > >> > > init_tex(ctx, 1, PIPE_TEXTURE_2D, true,
> > > > PIPE_FORMAT_R32_FLOAT,
> > > > >> > > 60, 12, init1);
> > > > >> > > init_compute_resources(ctx, (int []) { 0, 1, -1 });
> > > > >> > > launch_grid(ctx, (uint []){1, 1, 1}, (uint []){15, 12,
> > 1},
> > > > 0,
> > > > >> > NULL);
> > > > >> > > check_tex(ctx, 1, expect, NULL);
> > > > >> > > destroy_compute_resources(ctx);
> > > > >> > > destroy_tex(ctx);
> > > > >> > > destroy_prog(ctx);
> > > > >> > > }
> > > > >> > >
> > > > >> > > for init_prog, here is the key functions:
> > > > >> > > *tgsi_text_translate(psrc, prog, Elements(prog));
> > > > >> > > what's the meaning for this API? the input is tgsi program,
> > what's
> > > > the
> > > > >> > > output?
> > > > >> > > in a nutshell, how can gallium translate tgsi to evergreen's
> > ISA.
> > > > >> > >
> > > > >> > > *ctx->hwcs = pipe->create_compute_state(pipe, &cs);
> > > > >> > > *pipe->bind_compute_state(pipe, ctx->hwcs);
> > > > >> > > in evergreen_compute.c, it doesn't calloc kernels array and
> > process
> > > > >> > > cso->prog if HAVE_OPENCL is not set. should we set HAVE_OPENCL
> > for
> > > > >> > general
> > > > >> > > compute?
> > > > >> > >
> > > > >> > > thanks,
> > > > >> > > --lx
> > > > >> >
> > > > >> > > _______________________________________________
> > > > >> > > mesa-dev mailing list
> > > > >> > > mesa-dev at lists.freedesktop.org
> > > > >> > > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
> > > > >> >
> > > > >> >
> > > > > _______________________________________________
> > > > > mesa-dev mailing list
> > > > > mesa-dev at lists.freedesktop.org
> > > > > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
> > > >
> >
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