> -Original Message-
> From: Damjan Marion
> Subject: Re: [vpp-dev] clang-9
>
>
> Dear Lijian,
>
> I don’t see how this matters if neither gcc 9.2+ or clang-10 are available in
> ubuntu 18.04.
> For custom builds users can simply say make CC=whatever-co
Dear Lijian,
I don’t see how this matters if neither gcc 9.2+ or clang-10 are available in
ubuntu 18.04.
For custom builds users can simply say make CC=whatever-compiler-they-want …
Also there is no N1 available in CSIT, so we cannot really judge about
performance impact on the large number
Hi Damjan,
I got some feedback regarding switching default compiler from gcc to clang in
VPP, from compiler team.
" Neither LLVM nor GCC tune much for Neoverse N1, I think the difference is
that GCC has better vectorization and a better optimized AArch64 backend. GCC10
has just been released
; <mailto:lijian.zh...@arm.com>> wrote:
>> >
>> >
>> >> -Original Message-
>> >> From: Damjan Marion mailto:dmar...@me.com>>
>> >> Sent: 2020年5月12日 0:46
>> >> To: Lijian Zhang mailto:lijian.zh...@arm.com>>
>>
03:40, Lijian Zhang wrote:
>> >
>> >
>> >> -Original Message-
>> >> From: Damjan Marion
>> >> Sent: 2020年5月12日 0:46
>> >> To: Lijian Zhang
>> >> Cc: vpp-dev ; nd
>> >> Subject: Re: [vpp-dev] cla
ijian Zhang > <mailto:lijian.zh...@arm.com>> wrote:
> >
> >
> >> -Original Message-
> >> From: Damjan Marion mailto:dmar...@me.com>>
> >> Sent: 2020年5月12日 0:46
> >> To: Lijian Zhang mailto:lijian.zh...@arm.com>>
> >&
Am Di., 12. Mai 2020 um 10:00 Uhr schrieb Damjan Marion via lists.fd.io
:
>
>
>
> > On 12 May 2020, at 03:40, Lijian Zhang wrote:
> >
> >
> >> -Original Message-
> >> From: Damjan Marion
> >> Sent: 2020年5月12日 0:46
> >> To:
> On 12 May 2020, at 03:40, Lijian Zhang wrote:
>
>
>> -Original Message-
>> From: Damjan Marion
>> Sent: 2020年5月12日 0:46
>> To: Lijian Zhang
>> Cc: vpp-dev ; nd
>> Subject: Re: [vpp-dev] clang-9
>>
>>
>> Hi L
> -Original Message-
> From: Damjan Marion
> Sent: 2020年5月12日 0:46
> To: Lijian Zhang
> Cc: vpp-dev ; nd
> Subject: Re: [vpp-dev] clang-9
>
>
> Hi Lijian,
>
> If I got it right, neither gcc or clang available in ubuntu 18.04 LTS are
> abl
this issue?
> Thanks.
> From: vpp-dev@lists.fd.io On Behalf Of Damjan Marion
> via lists.fd.io
> Sent: 2020年4月28日 22:14
> To: vpp-dev
> Subject: [vpp-dev] clang-9
>
>
> Folks,
>
> As there is bug in gnu assembler which is shipping with ubuntu 18.04 we are
>
suggest on this issue?
Thanks.
From: vpp-dev@lists.fd.io On Behalf Of Damjan Marion via
lists.fd.io
Sent: 2020年4月28日 22:14
To: vpp-dev
Subject: [vpp-dev] clang-9
Folks,
As there is bug in gnu assembler which is shipping with ubuntu 18.04 we are not
able to produce working binaries with avx512
Lock.__init__(self, SEMAPHORE, 1, 1, ctx=ctx)
> 07:56:20 File "/usr/lib/python3.6/multiprocessing/synchronize.py", line 59,
> in __init__
> 07:56:20 unlink_now)
> 07:56:20 OSError: [Errno 28] No space left on device
> ...
>
> Regards,
> John
>
> Fr
__init__
07:56:20 unlink_now)
07:56:20 OSError: [Errno 28] No space left on device
...
Regards,
John
From: vpp-dev@lists.fd.io On Behalf Of Damjan Marion via
lists.fd.io
Sent: Tuesday, April 28, 2020 10:14 AM
To: vpp-dev
Subject: [vpp-dev] clang-9
Folks,
As there is bug in gnu assembl
lf Of Damjan Marion via lists.fd.io
> <http://lists.fd.io/>
> Sent: 2020年4月29日 4:33
> To: Dave Barach mailto:d...@barachs.net>>
> Cc: Florin Coras mailto:fcoras.li...@gmail.com>>;
> vpp-dev mailto:vpp-dev@lists.fd.io>>
> Subject: Re: [vpp-dev] clang-9
>
Barach
Cc: Florin Coras ; vpp-dev
Subject: Re: [vpp-dev] clang-9
Yes, (u8 *) in front of 1st argument will likely help….
—
Damjan
> On 28 Apr 2020, at 22:07, d...@barachs.net<mailto:d...@barachs.net> wrote:
>
> Kind of. Memset has no stated alignment requirements. Is there a form
e
>
> -Original Message-
> From: Damjan Marion
> Sent: Tuesday, April 28, 2020 3:50 PM
> To: Florin Coras
> Cc: vpp-dev ; Dave Barach (dbarach)
> Subject: Re: [vpp-dev] clang-9
>
>
> Looks like you told compiler that svm_fifo_t will b
Looks like you told compiler that svm_fifo_t will be always cacheline aligned:
typedef struct _svm_fifo
{
CLIB_CACHE_LINE_ALIGN_MARK (shared_first);
but you increment pointer for something that it is not X*64:
fmem += hdrs + rounded_data_size;
So clang caught you cheating :)
—
Hi Damjan,
Just tried the vcl tests and the debug version works just fine. The release
images crash (at least in the test I’m looking at) doing:
memset (f, 0, sizeof (*f))
>From gdb:
(gdb) x/i $pc
=> 0x7f15fcd329f4 :movaps
%xmm0,0x1f0(%rdi,%rbp,1)
(gdb) i r rdi
rdi
Folks,
As there is bug in gnu assembler which is shipping with ubuntu 18.04 we are not
able to produce working binaries with avx512 instruction set.
Because of that, I had to change default to avx2. reported bug[1], but it is
ignored for a year.
As alternative[2], I wanted to consider using
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