similar to: speed of a vector operation question

On Wed, Jun 4, 2014 at 4:31 PM, Timothy B. Terriberry <tterribe at xiph.org> wrote: > Alpha Thinktink wrote: >> max_data_bytes=-11 > > That value is passed in by you. I also don't think passing such a value > would have worked in earlier releases. It indicates the size of the > buffer you are passing to the encoder to receive the encoded output. Actually, I'm

Hi, I'm facing this problem quite a lot, so it seems worthwhile to check to see what the most efficient solution is. I've two vectors x (values ordered) and y. I've ranges x < x0, x0 <= x < x1, x1 <= x < x2, x2 <= x < x3, x > xn and want to construct a subvector yprime of y which consists of the first/last value of y whose x values are in the range. For

I had occasion recently to read in a one-line *.csv file that looked like: "CandidateName","NSN","Ethnicity","dob","gender" "Smith, Mary Jane",111222333,"E","2/25/1989","F" That "F" (for female) in the last field got transformed to FALSE. Apparently read.csv (and hence read.table) are inferring

Hi Wonsun, can you please provide a testcase. Best wishes, Duncan. > I've noticed that LLVM does a bad job of optimizing array indexing > code for FORTRAN arrays declared using the ALLOCATABLE keyword. > > For example if you have something like the following: > > DOUBLE PRECISION,ALLOCATABLE,DIMENSION(:,:,:,:) :: QAV > ... > ALLOCATE( QAV(

I've noticed that LLVM does a bad job of optimizing array indexing code for FORTRAN arrays declared using the ALLOCATABLE keyword. For example if you have something like the following: DOUBLE PRECISION,ALLOCATABLE,DIMENSION(:,:,:,:) :: QAV ... ALLOCATE( QAV( -2:IMAX+2,-2:JMAX+2,-2:KMAX+2,ND) ) ... DO L = 1, 5 DO K = K1, K2 DO J = J1, J2 DO I = I1, I2 II = I +

Dear All, I am using fexact.c on a C++ program I wrote. To minimize dependencies on other files (e.g., to not need to include R.h and ctest.h ---now I only include the R files Boolean.h, Constants.h, and Memory.h), I have re-written all declarations of Sints as ints and, what is potentially more serious, I have re-written the line (lines 329 and 330, in fexact.c on R-1.6.1) /* IMAX is the

Hi, I have found some example of R code : http://commons.wikimedia.org/wiki/File:Mandelbrot_Creation_Animation_%28800x600%29.gif When I run this code on my computer it takes few seconds. I wanted to make similar program in Maxima CAS : http://thread.gmane.org/gmane.comp.mathematics.maxima.general/29949/focus=29968 for example : f(x,y,n) := block([i:0, c:x+y*%i,ER:4,iMax:n,z:0], while

Hi Peter, > Why not do this too? I've applied this - thanks for the patch! Ciao, Duncan.

I found this example in an Introductory R book in the chapter on Matrices and Arrays The array is > m [,1] [,2] [,3] [,4] [,5] [1,] 0 12 13 8 20 [2,] 12 0 15 28 88 [3,] 13 15 0 6 9 [4,] 8 28 6 0 33 [5,] 20 88 9 33 0 The code is #returns the minimum value of d[i,j], i !=j and the row attaining #the minimum, for square

Duncan, Do a quick check here on x86_64-apple-darwin10 with svn llvm and svn dragon-egg against release gcc 4.5.0, the results from the himenoBMTxpa benchmark compiled at -O3 look pretty good. With stock gcc-4.5.0, we get... Grid-size = M mimax = 128 mjmax = 128 mkmax = 256 imax = 127 jmax = 127 kmax =255 Start rehearsal measurement process. Measure the performance in 3 times. MFLOPS:

(Sorry for cross-posting; I'm not on either ext3-users or linux-xfs, but I thought both lists might find this interesting. CC me with any replies or questions. Thanks.) (The last four paragraphs contain the interesting bits. Basically, XFS hath kick-ed the *ss of ext3 under conditions that are, for our company, critical.) Some listees might be interested in some testing I did the other

This is probably a trivial question, but I did not see it in the FAQs. Perhaps I simply need to be pointed to some URLs. In any case, I have some sampled data that has peaks, and I would like to extract peak height, location, and width, according to almost any statistical model. Gaussian would seem to make the most sense. There can also be "steps" increasing the amplitude over a

Hi Felicia, A few comments: > - /* CELT can only support up to 20 ms */ > subframe_size = st->Fs/50; > - nb_subframes = frame_size > st->Fs/25 ? 3 : 2; > + nb_subframes = frame_size/subframe_size; This will use six 20ms frames to make a 120ms packet, even for SILK-only mode where frames can be up to 60ms. For SILK, two 60ms frames would be a more

K-means recluster data with given cluster centers Dear R user, I have several large data sets. Over time additional new data sets will be created. I want to cluster all the data in a similar/ identical way with the k-means algorithm. With the first data set I will find my cluster centers and save the cluster centers to a file [1]. This first data set is huge, it is guarantied that cluster

Hello, I have created a spatial map of temperature over an area thanks to interpolation. So I have temperature data everywhere on my map. My question is: how can I find temperature data on my map for a specific location according to coordinates? For this, I have a data frame containing 4 columns: "x" for longitude, "y" for latitude, "z" for altitude" and

Attached is the amended second patch. It now extends the multistream API as well to 80/100/120 ms and incorporates changes based on Mark's comments. Thanks, Felicia On Mon, Jun 13, 2016 at 4:21 PM Felicia Lim <flim at google.com> wrote: > Hi Mark, Jean-Marc, > > Thanks for your comments. > > On Sun, Jun 12, 2016 at 6:34 AM Mark Harris <mark.hsj at gmail.com>

Hello, some misc. cleanup patches for speexdsp, nothing big I'm not sure about how to submit patches, so this is a test balloon :) ultimately, I'd like to fix the FIXED_POINT issue, see http://lists.xiph.org/pipermail/speex-dev/2013-December/008465.html currently, I think the only way to find out how speexdsp has been compiled is to resample some bytes and observe the output; which is

/* Cc: samba list */ Vincent Marty wrote: > Hi Ogi ! > Did you find a solution to the problem you described in a post in > linux.samba in dec 2004 ? > I get the same messages from Fedora Core 3 when accessing to a iMax > under Mac Os 10.3. Hi! Since I started to use Debian kernel 2.6.10 (in unstable), the problem disappeared. Fedora Core 3 uses 2.6.10 too so I don't know

Hi, I wondered if are there any further thoughts on these patches? Thanks, Felicia On Thu, Jun 2, 2016 at 2:13 PM Felicia Lim <flim at google.com> wrote: > OK, I've amended the second patch and also added 80 and 100 ms. > > Thanks, > Felicia > > > On Thu, Jun 2, 2016 at 7:20 AM Jean-Marc Valin <jmvalin at jmvalin.ca> wrote: > >> On 06/01/2016 02:06

In debugging I saw: opus_multistream_encoder.c line 760 if(!vbr) max_data_bytes = IMIN(max_data_bytes, 3*st->bitrate_bps/(3*8*Fs/frame_size)); max_data_bytes after this code becomes -2 where as before it was 10200. I suspect it was because st->bitrate_bps was set to -1000 to indicate Auto bitrate. I imagine Max bitrate (-1) has a slightly similar effect. then in the same c file