Displaying 20 results from an estimated 800 matches similar to: "Resampler experimental speedups"
2007 Sep 01
2
Comparing "transform" to "with"
Hi All,
I've been successfully using the with function for analyses and the
transform function for multiple transformations. Then I thought, why not
use "with" for both? I ran into problems & couldn't figure them out from
help files or books. So I created a simplified version of what I'm
doing:
rm( list=ls() )
x1<-c(1,3,3)
x2<-c(3,2,1)
x3<-c(2,5,2)
2008 Apr 22
4
how to convert non numeric data into numeric?
I am having the following error in my function
function(theta,reqdIRR)
{
theta1<-theta[1]
theta2<-theta[2]
n<-length(reqdIRR)
constant<- n*(theta1+theta2)
sum1<-lapply(reqdIRR*exp(theta1),FUN = sum)
sum2<-lapply(exp(theta2 - reqdIRR*exp(theta1)),FUN = sum)
sum = sum1 + sum2
log.fcn = constant - as.numeric(sum)
result = - log.fcn
return(result)
}
*error :
2009 Oct 26
1
[PATCH] Fix miscompile of SSE resampler
From: Thorvald Natvig <slicer at users.sourceforge.net>
Some optimizing compilers miscompile the current SSE optimizations when
full optimizations are enabled. By using output value pointer instead of
a return value, we can bypass this misbehaviour.
---
libspeex/resample.c | 8 ++++----
libspeex/resample_sse.h | 24 ++++++++----------------
2 files changed, 12 insertions(+), 20
2007 Feb 01
3
Help with efficient double sum of max (X_i, Y_i) (X & Y vectors)
Greetings.
For R gurus this may be a no brainer, but I could not find pointers to
efficient computation of this beast in past help files.
Background - I wish to implement a Cramer-von Mises type test statistic
which involves double sums of max(X_i,Y_j) where X and Y are vectors of
differing length.
I am currently using ifelse pointwise in a vector, but have a nagging
suspicion that there is a
2007 Apr 03
1
Speex ARM4 patch
The attached patch eliminates some warnings while compiling for ARM4
targets. It also simplifies the asm constraints a bit. Now we can use
the ARM4 optimisations when compiling for PortalPlayer targets in Rockbox.
Cheers,
Dan
-------------- next part --------------
A non-text attachment was scrubbed...
Name: speex_arm4.patch
Type: text/x-diff
Size: 1550 bytes
Desc: not available
Url :
2018 Jul 10
9
[PATCH 0/7] PowerPC64 performance improvements
The following series adds initial vector support for PowerPC64.
On POWER9, flac --best is about 3.3x faster.
Amitay Isaacs (2):
Add m4 macro to check for C __attribute__ features
Check if compiler supports target attribute on ppc64
Anton Blanchard (5):
configure.ac: Remove SPE detection code
configure.ac: Add VSX enable/disable
configure.ac: Fix FLAC__CPU_PPC on little endian, and add
2013 Mar 25
2
Faster way of summing values up based on expand.grid
Hello!
# I have 3 vectors of values:
values1<-rnorm(10)
values2<-rnorm(10)
values3<-rnorm(10)
# In real life, all 3 vectors have a length of 25
# I create all possible combinations of 4 based on 10 elements:
mycombos<-expand.grid(1:10,1:10,1:10,1:10)
dim(mycombos)
# Removing rows that contain pairs of identical values in any 2 of
these columns:
mycombos<-mycombos[!(mycombos$Var1
2003 Oct 05
2
Possible security hole
Maybe security related mails should be sent elsewhere? I didn't notice
any so here it goes:
sender.c:receive_sums()
s->count = read_int(f);
..
s->sums = (struct sum_buf *)malloc(sizeof(s->sums[0])*s->count);
if (!s->sums) out_of_memory("receive_sums");
for (i=0; i < (int) s->count;i++) {
s->sums[i].sum1 = read_int(f);
2008 Nov 26
1
SSE2 code won't compile in VC
Jean-Marc,
At least VS2005 (what I'm using) won't compile resample_sse.h with
_USE_SSE2 defined because it refuses to cast __m128 to __m128d and vice
versa. While there are intrinsics to do the casts, I thought it would be
simpler to just use an intrinsic that accomplishes the same thing
without all the casting. Thanks,
--John
@@ -91,7 +91,7 @@ static inline double
2003 Mar 30
1
[RFC][patch] dynamic rolling block and sum sizes II
Mark II of the patch set.
The first patch (dynsumlen2.patch) increments the protocol
version to support per-file dynamic block checksum sizes.
It is a prerequisite for varsumlen2.patch.
varsumlen2.patch implements per-file dynamic block and checksum
sizes.
The current block size calculation only applies to files
between 7MB and 160MB setting the block size to 1/10,0000 of
the file length for a
2015 Mar 02
13
Patch cleaning up Opus x86 intrinsics configury
The attached patch cleans up Opus's x86 intrinsics configury.
It:
* Makes ?enable-intrinsics work with clang and other non-GCC compilers
* Enables RTCD for the floating-point-mode SSE code in Celt.
* Disables use of RTCD in cases where the compiler targets an instruction set by default.
* Enables the SSE4.1 Silk optimizations that apply to the common parts of Silk when Opus is built in
2012 Jun 04
1
simulation of modified bartlett's test
Hi, I run this code to get the power of the test for modified bartlett's
test..but I'm not really sure that my coding is right..
#normal distribution unequal variance
asim<-5000
pv<-rep(NA,asim)
for(i in 1:asim)
{print(i)
set.seed(i)
n1<-20
n2<-20
n3<-20
mu<-0
sd1<-sqrt(25)
sd2<-sqrt(50)
sd3<-sqrt(100)
g1<-rnorm(n1,mu,sd1)
g2<-rnorm(n2,mu,sd2)
2015 Mar 13
1
[RFC PATCH v3] Intrinsics/RTCD related fixes. Mostly x86.
From: Jonathan Lennox <jonathan at vidyo.com>
* Makes ?enable-intrinsics work with clang and other non-GCC compilers
* Enables RTCD for the floating-point-mode SSE code in Celt.
* Disables use of RTCD in cases where the compiler targets an instruction set by default.
* Enables the SSE4.1 Silk optimizations that apply to the common parts of Silk when Opus is built in floating-point mode, not
2015 Mar 12
1
[RFC PATCHv2] Intrinsics/RTCD related fixes. Mostly x86.
From: Jonathan Lennox <jonathan at vidyo.com>
* Makes ?enable-intrinsics work with clang and other non-GCC compilers
* Enables RTCD for the floating-point-mode SSE code in Celt.
* Disables use of RTCD in cases where the compiler targets an instruction set by default.
* Enables the SSE4.1 Silk optimizations that apply to the common parts of Silk when Opus is built in floating-point mode, not
2004 Jan 11
1
comparing 2 in rsync
Hi,
Is there a sure way to test 2 cd's if they are true copies in rsync.
I have tried this...
rsync -avv /mnt/cdrom/ /mnt/cdrom2
**
result....quite shotened...
misc/rpm2header is uptodate
pkg-9.2-FiveStar-download-i586.idx is uptodate
total: matches=0 tag_hits=0 false_alarms=0 data=0
wrote 65301 bytes read 20 bytes 1789.62 bytes/sec
total size is 679261427 speedup is 10398.82
**
Is
2010 Sep 24
2
grep contents of file on remote server
Hello,
I am attempting to grep the contents of a key file I have SCP'd to a
remote server. I am able to cat it:
[code]
[bluethundr at LBSD2:~]$:ssh root at sum1 cat /root/id_rsa.pub
root at lcent01.summitnjhome.com's password:
ssh-rsa
2010 May 19
2
[LLVMdev] Intrinsics and dead instruction/code elimination
Hi all,
I'm interested in the impact of representing code via intrinsic functions, in contrast to via an instruction, when it comes to performing dead instruction/code elimination. As a concrete example, lets consider the simple case of the llvm.*.with.overflow.* intrinsics.
If I have some sequence (> 1) of llvm.*.with.overflow.* intrinsics, as in the form of:
@global = global i32 0
2014 Aug 02
2
[LLVMdev] Create "appending" section that can be partially dead stripped
On 01/08/14 19:37, Reid Kleckner wrote:
> What happens if you drop appending linkage? I think it will just work,
> since you are already using a custom section, which will ensure that all
> the data appears contiguously in memory.
Thanks for the suggestion, but it still puts everything in a single
.section statement.
> Although, I do worry about what LLVM's alias analysis will
2015 Mar 18
5
[RFC PATCH v1 0/4] Enable aarch64 intrinsics/Ne10
Hi All,
Since I continue to base my work on top of Jonathan's patch,
and my previous Ne10 fft/ifft/mdct_forward/backward patches,
I thought it would be better to just post all new patches
as a patch series. Please let me know if anyone disagrees
with this approach.
You can see wip branch of all latest patches at
https://git.linaro.org/people/viswanath.puttagunta/opus.git
Branch:
2015 Mar 31
6
[RFC PATCH v1 0/5] aarch64: celt_pitch_xcorr: Fixed point series
Hi Timothy,
As I mentioned earlier [1], I now fixed compile issues
with fixed point and resubmitting the patch.
I also have new patch that does intrinsics optimizations
for celt_pitch_xcorr targetting aarch64.
You can find my latest work-in-progress branch at [2]
For reference, you can use the Ne10 pre-built libraries
at [3]
Note that I am working with Phil at ARM to get my patch at [4]