search for: greving

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2005 Jul 15
6
Problems setting up nested qdisc, feedback to LARTC HOWTO
Hi all, based on the information in the "Linux Advanced Routing & Traffic Control HOWTO", I was trying to set up traffic shaping on my firewall. While I found the HOWTO very useful, in the process I ran into some problems that I did not forsee: According to the HOWTO it seems that it should have worked, even after spending some time going through the sections looking for answers,
2000 Jul 11
0
Brave GNU World feature about ogg (BOUNCE vorbis-dev@xiph.org: Non-member submission from [&quot;Georg C. F. Greve&quot; <gr) (fwd)
------- Forwarded Message Sender: greve@fusebox.hanse.de To: vorbis-dev@xiph.org Cc: info@xiph.org, webmaster@xiph.org Subject: Brave GNU World feature about ogg From: "Georg C. F. Greve" <greve@gnu.org> Organization: GNU Project X-Home-Page: http://www.gnu.org/people/greve.html X-ICQ-Number: 10016966 X-Request-PGP: mailto:greve-public@fusebox.hanse.de X-PGP-Affinity: will accept
2013 Jun 30
18
Xen 4.2.2 /etc/init.d/xendomains save and restore of domains does not work
Hello, in the last days I switched from Xen 4.2.1 to Xen 4.2.2 (source from git repository tag 4.2.2) commit a125ec6a4a2f028f97f0bdd8946d347a36dbe76b Author: Jan Beulich <jbeulich@suse.com> Date: Tue Apr 23 18:42:55 2013 +0200 update Xen version to 4.2.2 My "base system" is a debian squeeze. For Xen I use the xl toolstack. Since updating to 4.2.2 the autosave and
2020 Feb 19
2
i1 true ^= -1 in DAG matcher?
...nothing in the printing code knows about setBooleanVectorContents so it can't make any decisions about how to print it either. I believe SelectionDAGDumper just calls APInt::operator<<(raw_ostream &) which defaults to printing signed. ~Craig On Wed, Feb 19, 2020 at 3:01 PM Hendrik Greving < hendrik.greving.smi at gmail.com> wrote: > Yes the cited FIXME code might be unrelated. I do think there is _some_ > kind of issue somewhere because I do see a BUILD_VECTOR of i1 -1 on our > target which I set to setBooleanVectorContents(ZeroOrOneBooleanContent). > The backend...
2020 May 19
2
LLVM's loop unroller & llvm.loop.parallel_accesses
...oking for something more robust that also works with clang. On Mon, May 18, 2020 at 8:44 PM Michael Kruse <llvmdev at meinersbur.de> wrote: > What would be its semantics? When would clang attach that attribute? > > Michael > > Am Mo., 18. Mai 2020 um 14:01 Uhr schrieb Hendrik Greving < > hgreving at google.com>: > > > > Would you guys be open to supporting a new hint with the right > semantics, like e.g. llvm.loop.noalias_accesses?! I would need to find > support in clang however and the main point of support would be the loop > unroller behaving a...
2020 Jul 16
2
Selection DAG chain question
...hain it into an _existing_ chain. e.g. adding A->B to the DAG is ok. But adding A->B and next C->D with B->C is the problem. I appreciate the input On Thu, Jul 16, 2020 at 2:04 PM Matt Arsenault <arsenm2 at gmail.com> wrote: > > > > On Jul 16, 2020, at 17:00, Hendrik Greving <hgreving at google.com> wrote: > > > > > No, non-sideeffecting operations can be legalized as compiler-rt calls > > > > Right, but not as "regular" nodes with side-effects? I guess you could > search and analyze the DAG manually but that seems hacky. M...
2020 Jul 16
3
Selection DAG chain question
...lem here: divmod does not have a chain. I scanned other architectures, haven't found an example where somebody creates a chain out of thin air. Do you know any? On Thu, Jul 16, 2020 at 10:54 AM Tim Northover <t.p.northover at gmail.com> wrote: > On Thu, 16 Jul 2020 at 16:44, Hendrik Greving via llvm-dev > <llvm-dev at lists.llvm.org> wrote: > > But then the new nodes are not chained with respect to other nodes, or > not chained with respect to each other, in case there are several UDIVREM. > > Do they really need to be chained with each other or anything else?...
2020 May 18
2
LLVM's loop unroller & llvm.loop.parallel_accesses
...ay, > even with #pragma omp ivdep, a compiler is not required to vectorize > the loop. > > In LLVM, runtime/partial unrolling only takes place after > vectorization, so there is less of an issue there. > > Michael > > > Am Do., 14. Mai 2020 um 16:16 Uhr schrieb Hendrik Greving < > hgreving at google.com>: > > > > This is interesting! So are you saying that loop.parallel_accesses > strictly loop parallel, and says nothing about aliasing? I see, I guess we > may have been "abusing" the hint and re-purposed it. But isn't llvm's &...
2004 Jul 02
2
file size and actually blocks do not match
I have a disk where serveral files have a file size that is much bigger then the space they actually use. THe file size is bogus. In the example below, the size is reported as 4.2MB but the file is really supposed to be on 116K which is true accoring to du and the block list from debugfs. However, doing a 'cat |wc' file actually gives me 4.2MB bytes. Where are those extra bytes coming
2019 Dec 18
2
Spilling to register for a given register class
...ince SPR registers > are not taken into account during this iteration there is no issue for > creating new live ranges during spilling for these ones > - Second they allocate SPRs and they get spilled to memory. > > Cheers, > -Quentin > > On Dec 17, 2019, at 1:47 PM, Hendrik Greving via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > Hello, for an architecture that doesn't have a good way to load/store a > given register class to memory, is it instead easy to spill/fill from > another register class instead? > e.g. > - storeRegToStack/loadReg...
2020 Feb 19
2
i1 true ^= -1 in DAG matcher?
...issue is that the immediate matcher for scalars calls getSExtValue on a 1-bit APInt which will return -1 in an int64_t. ~Craig On Wed, Feb 19, 2020 at 11:11 AM Tim Northover via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Hi Hendrik, > > On Wed, 19 Feb 2020 at 11:01, Hendrik Greving via llvm-dev > <llvm-dev at lists.llvm.org> wrote: > > It looks like that in the DAG matcher, the DAG has a xor with '-1' for > checking a true value vector > > > > for instance, > > > > %cmp4.i = icmp ne <8 x i32> %6, %5 > > %7 = xor &l...
2020 May 14
3
LLVM's loop unroller & llvm.loop.parallel_accesses
...ight deduce that non-atomic stores are necessarily > not aliasing (when not using transactional memory), but I don't think > we can do this for all the read accesses. Would that be sufficiently > useful? > > Michael > > > Am Do., 14. Mai 2020 um 15:11 Uhr schrieb Hendrik Greving via llvm-dev > <llvm-dev at lists.llvm.org>: > > > > Hi, in our backend, which is unfortunately not upstreamed, we are > relying on llvm.loop.parallel_accesses metadata for certain passes like > software pipelining so we can re-order instructions. Ideally, we would want &...
2020 Jul 17
2
Selection DAG chain question
...hat > you expand after ISel. > > (might be easier than doing something before ISel and then having to > bother about chains, glue etc) > > > > Regards, > > Björn > > > > *From:* llvm-dev <llvm-dev-bounces at lists.llvm.org> *On Behalf Of *Hendrik > Greving via llvm-dev > *Sent:* den 16 juli 2020 23:35 > *To:* Matt Arsenault <arsenm2 at gmail.com> > *Cc:* llvm-dev <llvm-dev at lists.llvm.org> > *Subject:* Re: [llvm-dev] Selection DAG chain question > > > > Yea. I think AMD chains the node they're expanding into,...
2020 Jul 20
2
Selection DAG chain question
...then having to >>> bother about chains, glue etc) >>> >>> >>> >>> Regards, >>> >>> Björn >>> >>> >>> >>> *From:* llvm-dev <llvm-dev-bounces at lists.llvm.org> *On Behalf Of *Hendrik >>> Greving via llvm-dev >>> *Sent:* den 16 juli 2020 23:35 >>> *To:* Matt Arsenault <arsenm2 at gmail.com> >>> *Cc:* llvm-dev <llvm-dev at lists.llvm.org> >>> *Subject:* Re: [llvm-dev] Selection DAG chain question >>> >>> >>> >>&...
2020 Jul 16
2
Selection DAG chain question
...not a common case. My current WA will be to code prepare into intrinsics with side-effects. I was wondering if that's really necessary.. Thanks for the input On Thu, Jul 16, 2020 at 11:21 AM Matt Arsenault <arsenm2 at gmail.com> wrote: > > > On Jul 16, 2020, at 14:10, Hendrik Greving via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > I scanned other architectures, haven't found an example where somebody > creates a chain out of thin air. Do you know any? > > > > This is the case for all operations expanded as library calls. The call > s...
2020 Jul 16
2
Selection DAG chain question
...uot; nodes with side-effects? I guess you could search and analyze the DAG manually but that seems hacky. Maybe something that one day LLVM could support natively. On Thu, Jul 16, 2020 at 11:55 AM Matt Arsenault <arsenm2 at gmail.com> wrote: > > > On Jul 16, 2020, at 14:47, Hendrik Greving <hgreving at google.com> wrote: > > I think their originating node already has a chain (i.e. mem operand or > side effect in llvm-ir) > > > > No, non-sideeffecting operations can be legalized as compiler-rt calls > > -Matt > -------------- next part -------------...
2012 Jan 16
3
Trying to get metadata plugin working
Hi, I'm working on a Kolab related project and wanted to use dovecot on my dev machine. However I'm stuck with the metadata-plugin. I "solved" the permissions problems but now I get dict: Error: file dict commit: file_dotlock_open(~/Maildir/shared-metadata) failed: No such file or directory Before that, I had dict { metadata = file:/var/lib/dovecot/shared-metadata but
2007 Apr 02
2
How to resolve an up2date package conflict?
Hi, At present I'm setting up several CentOS (4 and 4.4) machines, and in the process of installing the several updates that are automatically mentioned by up2date as being available, I'm running into a package conflict. More particular, when trying to install several of the C compiler related packages (like gcc, cpp, etc.) I get the error message: "Test install failed
2008 May 13
6
variable name containing variable name
Hello, i''m new to puppet (and ruby). I have a problem when using a variable name containing a variable name and containing a reserved variable name : I have a class : class kernel-Linux-binary { $test = $operatingsystem ? { Fedora => "/usr/bin/test", default => undef } } and i want to call "test" and replace Linux by
2005 Aug 17
21
HOWTO unmaintained?
Hi, more than a month ago I proposed an addition to the HOWTO to address a certain packet classification problem/bug and how to fix it (see http://mailman.ds9a.nl/pipermail/lartc/2005q3/016728.html). I never received any reaction from the HOWTO maintainers, not even when addressing them directly (see mail below). Given that a month has gone by: Is the HOWTO currently unmaintained? Regards,