Displaying 20 results from an estimated 2000 matches similar to: "export 4D data as povray density files"
2010 May 18
1
lattice::panel.levelplot.raster too picky with unequal spacing
Dear all,
I got a couple of warnings using panel.levelplot.raster,
In panel.levelplot.raster(..., interpolate = TRUE) :
'y' values are not equispaced; output will be wrong
although I was quite sure my data were equally spaced (indeed, I
created them with seq()). A closer look at the source code reveals
that the function tests for exact uniformity in grid spacing,
if
2008 Mar 29
0
[LLVMdev] Using Povray with the test suite
I'm using LLVM 2.2 and trying to run the external povray test. The LLVM
Test Suite Guide (http://llvm.org/releases/2.2/docs/TestingGuide.html)
Indicates that configuring with "--enable-povray=directory" will do the
trick. Unfortunately that doesn't seem to work. Poking around the config
files I saw that "--with-externals=directory" seems to work, but then the
script
2017 Jan 30
4
(RFC) Adjusting default loop fully unroll threshold
Currently, loop fully unroller shares the same default threshold as loop
dynamic unroller and partial unroller. This seems conservative because
unlike dynamic/partial unrolling, fully unrolling will not affect
LSD/ICache performance. In https://reviews.llvm.org/D28368, I proposed to
double the threshold for loop fully unroller. This will change the codegen
of several SPECCPU benchmarks:
Code
2017 Jan 30
0
(RFC) Adjusting default loop fully unroll threshold
> On Jan 30, 2017, at 10:49 AM, Dehao Chen via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> Currently, loop fully unroller shares the same default threshold as loop dynamic unroller and partial unroller. This seems conservative because unlike dynamic/partial unrolling, fully unrolling will not affect LSD/ICache performance. In https://reviews.llvm.org/D28368
2017 Jan 30
2
(RFC) Adjusting default loop fully unroll threshold
On Mon, Jan 30, 2017 at 3:51 PM Mehdi Amini via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On Jan 30, 2017, at 10:49 AM, Dehao Chen via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> Currently, loop fully unroller shares the same default threshold as loop
> dynamic unroller and partial unroller. This seems conservative because
> unlike dynamic/partial
2017 Jan 31
0
(RFC) Adjusting default loop fully unroll threshold
On Mon, Jan 30, 2017 at 3:56 PM, Chandler Carruth <chandlerc at google.com>
wrote:
> On Mon, Jan 30, 2017 at 3:51 PM Mehdi Amini via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> On Jan 30, 2017, at 10:49 AM, Dehao Chen via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>> Currently, loop fully unroller shares the same default
2017 May 18
6
Enable vectorizer-maximize-bandwidth by default?
Hi,
I'm proposing to make vectorizer-maximize-bandwidth on by default for loop
vectorizer because it should generally help performance.
I've tested the performance impact on Intel sandybridge machine with
speccpu benchmarks:
Benchmark Base:Reference (1)
-------------------------------------------------------
spec/2006/fp/C++/444.namd 26.84
2011 Oct 12
2
[LLVMdev] [llvm-testresults] bwilson__llvm-gcc_PROD__i386 nightly tester results
Hi Bob, are these performance regressions real? They look pretty serious.
Ciao, Duncan.
On 10/12/11 09:40, llvm-testresults at cs.uiuc.edu wrote:
>
> bwilson__llvm-gcc_PROD__i386 nightly tester results
>
> URL http://llvm.org/perf/db_default/simple/nts/332/
> Nickname bwilson__llvm-gcc_PROD__i386:4
> Name curlew.apple.com
>
> Run ID Order Start Time End Time
>
2011 Oct 12
0
[LLVMdev] [llvm-testresults] bwilson__llvm-gcc_PROD__i386 nightly tester results
Yes, they are real. I re-ran the two tests with the biggest execution time regressions, and the results were completely reproducible.
On Oct 12, 2011, at 1:24 AM, Duncan Sands wrote:
> Hi Bob, are these performance regressions real? They look pretty serious.
>
> Ciao, Duncan.
>
> On 10/12/11 09:40, llvm-testresults at cs.uiuc.edu wrote:
>>
>>
2017 Jan 31
3
(RFC) Adjusting default loop fully unroll threshold
> On Jan 30, 2017, at 4:56 PM, Dehao Chen <dehao at google.com> wrote:
>
>
>
> On Mon, Jan 30, 2017 at 3:56 PM, Chandler Carruth <chandlerc at google.com <mailto:chandlerc at google.com>> wrote:
> On Mon, Jan 30, 2017 at 3:51 PM Mehdi Amini via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>> On Jan 30,
2005 Jul 11
3
misc3d package
Hi,
I am trying to install the misc3d package on a Windows (XP) installation of R 2.0.1 using install.packages("misc3d") but with no success. I have used this approach with other packages OK, but for misc3d I get the following output...
trying URL `http://cran.r-project.org/bin/windows/contrib/2.0/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 27996 bytes
2016 Mar 16
3
GSoC Proposal : Path Profiling Support
Hi David,
> Are the data below all collected when only one function is picked for
> instrumentation?
Yes, here is a list of the benchmarks and selected functions.
+-----------------+----------------------------------------------------------------------------------------------+
| blks | _Z19BlkSchlsEqEuroNoDivfffffif
|
2011 Nov 14
2
[LLVMdev] Performance Tracking
Hello Everyone,
I've been looking at benchmarks of LLVM recently, and overall they look pretty good. Aside from things that use OpenMP or benefit from autovectorisation, Clang/LLVM and GCC seem to come fairly close, with no overall winner.
But: there do seem to have been a number of performance regressions between 2.9 and 3.0:
http://openbenchmarking.org/result/1110178-AR-1110173AR66
2011 May 12
2
Exporting interactive 3D plots with axes and labels
Hi,
I have a question about exporting interactive 3D plots. I use the following code to plot a contour of a trivariate normal distribution:
library(mvtnorm)
library(rgl)
library(misc3d)
n=25
x=seq(-3,3,length=n)
X=cbind(rep(x,each=n**2),rep(rep(x,each=n),n),rep(x,n**2))
p=array(dmvnorm(X,sigma=diag(3)*0.5+0.5),c(n,n,n))
contour3d(p,x,x,x,level=mean(p))
lim=c(-3,3)
2011 Sep 11
2
[LLVMdev] LLVM 2.9 Fails to Compile some CPU2006 Benchmarks on X86
Hi,
We are using LLVM 2.9 (with the llvm-gcc front end) to compile and run the SPEC CPU2006 benchmarks on x86.
We are compiling and running the benchmarks on a an Intel Xeon E5540 processor running Ubuntu 10.10 (64-bit version).
For the native x86-64 target, we are using the following command-line arguments:
-O3 -march=core2 -mtune=core2
and are getting compile-time errors on the gamess and
2010 Apr 15
3
Exporting an rgl graph
Hi the list,
I use rgl to produce a 3D graph. I would like to "show" this graph to
some collaborator. Is there a way to save it and send it to someone
else?
Christophe Genolini
2018 Aug 14
3
[RFC] Delaying phi-to-select transformation until later in the pass pipeline
Summary
=======
I'm planning on adjusting SimplifyCFG so that it doesn't turn two-entry phi
nodes into selects until later in the pass pipeline, to give passes which can
understand phis but not selects more opportunity to optimize. The thing I'm
trying to do which made me think of doing this is described below, but from the
benchmarking I've done it looks like this is overall a
2009 Feb 23
2
[LLVMdev] make-test dependencies on local directory
Hi,
I am getting this when running make-test :-
$ /usr/src/llvm-test-2.5/configure
checking for spec95 benchmark sources... no, not found in
/home/vadve/shared/ben
chmarks/spec95/benchspec
checking for spec2000 benchmark sources... no, not found in
/home/vadve/shared/b
enchmarks/speccpu2000/benchspec
checking for spec2006 benchmark sources... no, not found in
/home/vadve/shared/b
2008 Jul 01
2
Problem with loading library-ks
Hi,
I am trying to load the library(ks), but I am getting the following error:
Loading required package: KernSmooth
KernSmooth 2.22 installed
Copyright M. P. Wand 1997
Loading required package: mvtnorm
Loading required package: rgl
Loading required package: misc3d
Error in lazyLoadDBfetch(key, datafile, compressed, envhook) :
ReadItem: unknown type 241
In addition: Warning messages:
1:
2016 Mar 29
2
[CodeGen] CodeSize - TailMerging and BlockPlacement
Hi everyone,
The code layout that TailMerging (inside BranchFolding) works on is not
the final layout optimized based on the branch probability. Generally,
after BlockPlacement, many new merging opportunities emerge. I did an
experiment of adding additional BranchFolding and BlockPlacement after
the existing BlockPlacement (i.e., -block-placement -branch-folder
-block-placement) targeting