[llvm-dev] Debug info for CUDA code
Alexey Bataev via llvm-dev
llvm-dev at lists.llvm.org
Wed Jan 23 10:40:29 PST 2019
Hi Char, could you send the PTX file?
-------------
Best regards,
Alexey Bataev
23.01.2019 13:37, treinz пишет:
> Hi Alexey,
>
> I tried the b7195a6 from the llvm github mirror, which does include
> your commit D46189 <https://reviews.llvm.org/D46189> (see below). But
> it can't compile the example program
> on https://llvm.org/docs/CompileCudaWithLLVM.html#invoking-clang
> <https://llvm.org/docs/CompileCudaWithLLVM.html#invoking-clang.> --
> the error is:
>
> [aznb at asp testcuda]$ clang++ axpy.cu -g -o axpy --cuda-gpu-arch=sm_61
> -lcudart_static -ldl -lrt -pthread -v
> clang version 9.0.0 (https://git.llvm.org/git/clang.git
> 4566ed0d7c076ad061168f7c6cb5fa3a793614a8)
> (https://git.llvm.org/git/llvm.git
> b7195a6d8d9064c4fac6a7b91826de80df394f69)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /home/aznb/.linuxbrew/bin
> Found candidate GCC installation:
> /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0
> Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.4
> Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.7
> Selected GCC installation:
> /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0
> Candidate multilib: .;@m64
> Selected multilib: .;@m64
> Found CUDA installation:
> /net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64, version 10.0
> "/home/aznb/mycodes/testcuda -ferror-limit 19 -fmessage-length 0
> -pthread -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
> -fdiagnostics-show-option -o /tmp/59224042.1.login.q/axpy-560f45.s -x
> cuda axpy.cu
> clang -cc1 version 9.0.0 based upon LLVM 9.0.0svn default target
> x86_64-unknown-linux-gnu
> ignoring nonexistent directory "/include"
> ignoring nonexistent directory "/include"
> ignoring duplicate directory
> "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0"
> ignoring duplicate directory
> "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu"
> ignoring duplicate directory
> "/home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward"
> ignoring duplicate directory "/usr/local/include"
> ignoring duplicate directory
> "/home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include"
> ignoring duplicate directory "/usr/include"
> #include "..." search starts here:
> #include <...> search starts here:
> /home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include/cuda_wrappers
> /net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/include
> /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0
> /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/x86_64-unknown-linux-gnu
> /home/aznb/.linuxbrew/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../../../include/c++/5.5.0/backward
> /usr/local/include
> /home/aznb/.linuxbrew/Cellar/llvm/HEAD-b7195a6/lib/clang/9.0.0/include
> /usr/include
> End of search list.
> "/net/vol3/software/modules-sw/cuda/10.0/Linux/RHEL6/x86_64/bin/ptxas"
> -m64 -g --dont-merge-basicblocks --return-at-end -v --gpu-name sm_61
> --output-file /tmp/59224042.1.login.q/axpy-1ebb06.o
> /tmp/59224042.1.login.q/axpy-560f45.s
> ptxas /tmp/59224042.1.login.q/axpy-560f45.s, line 290; fatal :
> Parsing error near '{': syntax error
> ptxas fatal : Ptx assembly aborted due to errors
> clang-9: error: ptxas command failed with exit code 255 (use -v to see
> invocation)
>
> Maybe it's related to the illegal assembly code mentioned
> in https://reviews.llvm.org/D46189 Any idea what's going on? I'm
> including other people to see if they have any
> suggestion. https://reviews.llvm.org/D46189 also mentioned that this
> is fixed but has the fixed been merged in the trunk yet?
>
> BTW, github mirror's b7195a6 does include your commit about the debug
> info on nvptx:
>
> commit d77902a49a06890b97e33515d346c6e4df6b756b
> Author: Alexey Bataev <a.bataev at hotmail.com>
> Date: Tue Jan 22 17:43:37 2019 +0000
>
> [DEBUGINFO, NVPTX] Enable support for the debug info on NVPTX target.
>
> Summary: Enable full support for the debug info.
>
> Reviewers: echristo
>
> Subscribers: jholewinski, aprantl, JDevlieghere, llvm-commits
>
> Differential Revision: https://reviews.llvm.org/D46189
>
> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351846
> 91177308-0d34-0410-b5e6-96231b3b80d8
>
> Thanks,
> Char
>
> 在 2019-01-23 07:59:12，"Alexey Bataev" <a.bataev at outlook.com> 写道：
>
> Hi Char, I don't know how often it is updated, but most probably
> it is already updated.
>
> Best regards,
> Alexey Bataev
>
> 22 янв. 2019 г., в 17:46, treinz <treinz at 163.com
> <mailto:treinz at 163.com>> написал(а):
>
>>
>> Hi Alexey,
>>
>> Thank you for letting me know. Can I assume the the github mirror
>> is bumped to 9.0 and should contain the commit you mentioned?
>> Just want to make sure I'm looking at the right repo.
>>
>> Thanks,
>> Char
>>
>>
>> 在 2019-01-23 01:46:44，"Alexey Bataev" <a.bataev at outlook.com
>> <mailto:a.bataev at outlook.com>> 写道：
>>
>> Hi, debug info for the NVPTX is committed. It is not a part
>> of 8.0 RC1, unfortunately, only in 9.0 trunk.
>>
>> -------------
>> Best regards,
>> Alexey Bataev
>>
>> 14.12.2018 17:08, Alexey Bataev пишет:
>>> Actually, we need to commit just 2 more patches to enable
>>> basic debug info support for NVPTX. So, I hope, it is going
>>> to be the part of the next 8.0 release. It won't be
>>> backported to 7.0 definitely.
>>> Sure, I will let you know when the patches are committed to
>>> the trunk, no problems.
>>>
>>> Best regards,
>>> Alexey Bataev
>>>
>>> 14 дек. 2018 г., в 16:55, treinz <treinz at 163.com
>>> <mailto:treinz at 163.com>> написал(а):
>>>
>>>> Are you planning to release this as soon as it's ready or
>>>> you want to make it into a major release? Is it possible to
>>>> let me know (maybe by replying to this thread) once the
>>>> code is ready? I know sometimes it takes a while to get
>>>> things in the major release. I greatly appreciate your work
>>>> on this!
>>>>
>>>> Thanks,
>>>> Char
>>>>
>>>> 在 2018-12-15 05:19:50，"Alexey Bataev" <a.bataev at outlook.com
>>>> <mailto:a.bataev at outlook.com>> 写道：
>>>>
>>>> Hi Char, sorry, you need to wait a little bit. It is
>>>> almost ready, but not yet. For now, use nvcc if you
>>>> need debug info for Cuda.
>>>>
>>>> -------------
>>>> Best regards,
>>>> Alexey Bataev
>>>>
>>>> 14.12.2018 14:33, treinz пишет:
>>>>> Hi Alex, Eric and Valentin,
>>>>>
>>>>> Thanks for the information. I don't mean to push this
>>>>> but I'm in desperate need of debugging some cuda code.
>>>>> I'm not familiar with the llvm internal but it sounds
>>>>> like there's at least line info now, right? If so, can
>>>>> you point me to a branch of llvm that can help tracing
>>>>> the bug down to certain line of code. I believe my bug
>>>>> is simply a write/read out of array boundary.
>>>>>
>>>>> Thanks,
>>>>> Char
>>>>>
>>>>> 在 2018-12-05 07:15:28，"Alexey Bataev"
>>>>> <a.bataev at hotmail.com> 写道：
>>>>>
>>>>> Hi, yes, these patches are required to have tne
>>>>> basic debug info support. At least 2 more patches
>>>>> are required to be able to get values of the
>>>>> variables without additional manual data type
>>>>> casting in cuda-gdb.
>>>>>
>>>>> Best regards,
>>>>> Alexey Bataev
>>>>>
>>>>> 4 дек. 2018 г., в 18:06, Eric Christopher
>>>>> <echristo at gmail.com <mailto:echristo at gmail.com>>
>>>>> написал(а):
>>>>>
>>>>>> Adding Alexey here who has been driving this
>>>>>> effort in llvm.
>>>>>>
>>>>>> There are about 5 patches waiting on my review:
>>>>>>
>>>>>> -: https://reviews.llvm.org/D54320
>>>>>> -: https://reviews.llvm.org/D46189
>>>>>> -: https://reviews.llvm.org/D51554
>>>>>> -: https://reviews.llvm.org/D46061
>>>>>> -: https://reviews.llvm.org/D45784
>>>>>>
>>>>>> After which I think we're good.
>>>>>>
>>>>>> -eric
>>>>>>
>>>>>> On Mon, Dec 3, 2018 at 6:29 PM Valentin Churavy
>>>>>> via llvm-dev <llvm-dev at lists.llvm.org
>>>>>> <mailto:llvm-dev at lists.llvm.org>> wrote:
>>>>>>
>>>>>> AFAIK there is work under way from IBM
>>>>>> (couple of PRs open), but yes Clang 7.0
>>>>>> doesn't produce the necessary information.
>>>>>>
>>>>>> -V
>>>>>>
>>>>>> On Fri, Nov 30, 2018, 14:58 treinz via
>>>>>> llvm-dev <llvm-dev at lists.llvm.org
>>>>>> <mailto:llvm-dev at lists.llvm.org> wrote:
>>>>>>
>>>>>> Hi all,
>>>>>> I found this
>>>>>> http://lists.llvm.org/pipermail/llvm-dev/2017-November/118871.html
>>>>>> when googling about compiling CUDA code
>>>>>> using llvm. Is it still the case that one
>>>>>> can't step into CUDA kernel code compiled
>>>>>> by llvm in cuda-gdb? I'm using clang 7.0.
>>>>>>
>>>>>> Thanks,
>>>>>> Char
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> LLVM Developers mailing list
>>>>>> llvm-dev at lists.llvm.org
>>>>>> <mailto:llvm-dev at lists.llvm.org>
>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>
>>>>>> _______________________________________________
>>>>>> LLVM Developers mailing list
>>>>>> llvm-dev at lists.llvm.org
>>>>>> <mailto:llvm-dev at lists.llvm.org>
>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>
>>
>>
>>
>
>
>
>
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