Displaying 20 results from an estimated 200 matches similar to: "[LLVMdev] Is this a bug with loop unrolling and TargetTransformInfo ?"
2015 Oct 16
2
question about llvm partial unrolling/runtime unrolling
Hi Hal,
I did
opt.exe -S -debug -loop-unroll -unroll-runtime=true -unroll-count=4
csShader.ll
and it prints out:
Args: opt.exe -S -debug -loop-unroll -unroll-runtime=true -unroll-count=4
csShader.ll
Loop Unroll: F[build_cs_5_0] Loop %loop_entry
Loop Size = 82
partially unrolling with count: 1
Thanks,
Frances
On Thu, Oct 15, 2015 at 9:35 PM, Hal Finkel <hfinkel at anl.gov>
2015 Oct 12
2
question about llvm partial unrolling/runtime unrolling
Hi,
I am trying to do loop unrolling with loops that don't have constant loop
counter. It is highly appreciated if anyone can help me on this.
What I want to do is to turn
loop (n)
{
<loop body>
}
into
loop (n/4)
{
<loop body>
<loop body>
<loop body>
<loop body>
}
loop (n%4)
{
<loop
2006 Apr 25
2
Transactions and migrations (lots of records)???
Hi all -
I know this must be really easy to do, but I can''t for the life of me
figure it out.
I have about 100,000 rows I need to migrate over into rails using a
migration.
Right now, I select all of them out of the old database and do a series
of:
...
new.col = old.col
...
new.save
...
Problem is each one is it''s own transaction. And it''s slow. I''d
2016 Jul 26
2
Does e2fsck.conf contain "broken_system_clock = 1" per default on CentOS7?
On Tue, 26 Jul 2016 16:21:00 +0100 (BST)
John Hodrien <J.H.Hodrien at leeds.ac.uk> wrote:
> On Tue, 26 Jul 2016, Gabriele Pohl wrote:
>
> > on all of my CentOS7 VMs on different hypervisors
> > the config file e2fsck.conf contains the line
> >
> > broken_system_clock = 1
> >
> > Do you see similiar /default/ settings on
> > your machines? Is
2001 Nov 23
2
Rose diagrams in R?
I am looking for a function (or package) to plot histograms of directional
data such as wind direction. I believe these are called rose diagrams. Is
there an R script for this? If not, can it be constructed in a function
calling primitive graphic calls (lines, circles, boxes or polygons)?
The stars function is not quite right.
--
David Finlayson
Geomorphogist and GIS Specialist
NearPRISM -
2018 Apr 25
0
Can't Get Lattice Histogram Minor Tick Marks to Work
Per the Posting Guide, why didn't you post the reproducible R code example?
On April 24, 2018 8:22:15 PM PDT, Donald Macnaughton <donmac at matstat.com> wrote:
>I'm drawing a paneled histogram using the lattice package. I've
>succeeded in
>adding minor tick marks to the vertical axis, but I can't get the
>desired
>number of minor tick marks between the major
2018 Apr 25
3
Can't Get Lattice Histogram Minor Tick Marks to Work
I'm drawing a paneled histogram using the lattice package. I've succeeded in
adding minor tick marks to the vertical axis, but I can't get the desired
number of minor tick marks between the major tick marks.
I've attached a self-contained program to illustrate the problem.
Thanks for your help,
Don Macnaughton
Here's my sessionInfo:
R version 3.4.3 (2017-11-30)
Platform:
2018 Apr 25
1
Can't Get Lattice Histogram Minor Tick Marks to Work
Thanks Jeff,
I attached a file with the program to my earlier email because the posting guide seemed to imply that non-binary attachments would work. But I see that the file was stripped off.
I installed the program file on a web site, but when I downloaded it, the line breaks were stripped out. So I've included the program below:
-------------------------------------------------------
#
2009 Jul 07
3
Answering the nTh call ...
Curious to know if anyone's created something similar to the following,
if so and you'd care to share an AGI or dialplan, much appreciated.
I will be eventually write a script to answer the nTH call. (if I can't
find it (why reinvent wheels).
Looking to do some testing sending anywhere between 50-200 calls to a
machine. I'd like a Snom/Polycom/whatever to pick up after the nTh
2016 Jul 26
3
Does e2fsck.conf contain "broken_system_clock = 1" per default on CentOS7?
Hi,
on all of my CentOS7 VMs on different hypervisors
the config file e2fsck.conf contains the line
broken_system_clock = 1
I found this because on all of them, the
root partition was not checked triggered
by interval setting with tune2fs.
Do you see similiar /default/ settings on
your machines? Is it an issue only on VMs?
I have no CentOS7 host on bare metal to compare.
Thanks and cheers,
2020 Apr 25
1
Re: Not able to add pcie card to guest: Operation not permitted
On Fri, Apr 24, 2020 at 4:35 PM Peter Crowther
<peter.crowther@melandra.com> wrote:
>
> On Fri, 24 Apr 2020 at 21:10, Mauricio Tavares <raubvogel@gmail.com> wrote:
>>
>> Let's say I have libvirt
>>
>> [root@vmhost2 ~]# virsh version
>> [...]
>>
>> Running hypervisor: QEMU 2.12.0
>> [root@vmhost2 ~]#
>> [...]
>
> When
2001 Dec 06
2
Solaris install problem ... mcount
Hmnnn...
This is the third version of R I have installed and I am stumped on this one.
There is some unresolved external I cannot find...
/opt/SUNWspro/bin/cc -v -o R.bin CConverters.o Rdynload.o RNG.o apply.o
arithmetic.o array.o attrib.o bind.o builtin.o character.o coerce.o colors.o
complex.o connections.o context.o cov.o cum.o dcf.o datetime.o debug.o devPS.o
devPicTeX.o deparse.o
2020 Apr 24
2
Not able to add pcie card to guest: Operation not permitted
Let's say I have libvirt
[root@vmhost2 ~]# virsh version
Compiled against library: libvirt 4.5.0
Using library: libvirt 4.5.0
Using API: QEMU 4.5.0
Running hypervisor: QEMU 2.12.0
[root@vmhost2 ~]#
running on centos 8 and then I have this card
[root@vmhost2 ~]# virsh nodedev-dumpxml pci_0000_01_00_0
<device>
<name>pci_0000_01_00_0</name>
2017 Dec 15
3
[RFC] Add TargetTransformInfo::isAllocaPtrValueNonZero and let ValueTracking depend on TargetTransformInfo
> On Dec 14, 2017, at 20:28, Hal Finkel via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> Would that address your use case? Or can you have null dereferenceable pointers in that address space, just not ones from alloca?
I would like to clarify what “null” means exactly. One related thing I would like in the future is for the DataLayout to specify what numeric value is the
2017 Dec 14
2
[RFC] Add TargetTransformInfo::isAllocaPtrValueNonZero and let ValueTracking depend on TargetTransformInfo
Some optimizations depend on whether alloca instruction always has non-zero value. Currently, this checking is done by isKnownNonZero() in ValueTracking, and it assumes alloca in address space 0 always has non-zero value but alloca in non-zero address spaces does not always have non-zero value.
However, this assumption is incorrect for certain targets. For example, amdgcn---amdgiz target has
2018 Jan 17
0
[RFC] [TargetTransformInfo] Introduce hook to tell middle-end to not worry about register pressure
Hi all,
Currently in the llvm middle-end, we disable some optimizations because we
worry about the register pressure, (e.g. GVNHoist and ArgumentPromotion).
However, in the architecture that are register-rich, e.g. FPGAs, we do not
need to worry about the register pressure at all. For these architecures,
we may want to optimization the LLVM IR without worrying about the register
pressure.
I
2013 Jan 05
1
[LLVMdev] RFC: Can we make TargetTransformInfo an analysis group?
I know, I said a bad word -- analysis group.
But it works pretty much the way I think we want here. We *always* want a
TargetTransformInfo, and we have reasonable (conservative) stubs in place.
We would just like the option of providing one from the target that has
very clever implementations.
I would propose that we make TargetTransformInfo be an analysis group, and
provide
2013 Jul 18
0
[LLVMdev] IR Passes and TargetTransformInfo: Straw Man
There seems to be a lot of interest recently in LTO. How do you see the
situation of splitting the IR passes between per-TU processing and multi-TU
("link time") processing?
-- Sean Silva
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2013 Jul 29
1
[LLVMdev] IR Passes and TargetTransformInfo: Straw Man
On Mon, Jul 29, 2013 at 4:24 PM, Hal Finkel <hfinkel at anl.gov> wrote:
>
> Out of curiosity, has anyone tried to optimize the pass ordering in some
> (quasi-)automated way? Naively, a genetic algorithm seems like a perfect
> fit for this.
>
This is the closest I've seen:
http://donsbot.wordpress.com/2010/03/01/evolving-faster-haskell-programs-now-with-llvm/
However, it
2013 Jul 29
1
[LLVMdev] IR Passes and TargetTransformInfo: Straw Man
I personally strong abhor this kind of thing:-) I guess I should be more
open-minded.
For pre-ipo phase, some passes should not invoke, say, any loop
nest-opt, loop version, aggressive loop unrolling,
vectorization, aggressive inling.
The reasons are they will hinder the downstream optimizers if they kick
in early.
> Out of curiosity, has anyone tried to optimize the pass ordering in some