similar to: z[i,j] = x[i,j] * y(i+j) ?

On Sat, 2011-10-29 at 14:02 -0500, Hal Finkel wrote: > On Sat, 2011-10-29 at 12:30 -0500, Hal Finkel wrote: > > Ralf, et al., > > > > Attached is the latest version of my autovectorization patch. llvmdev > > has been CC'd (as had been suggested to me); this e-mail contains > > additional benchmark results. > > > > First, these are preliminary

On Sat, 2011-10-29 at 15:16 -0500, Hal Finkel wrote: > On Sat, 2011-10-29 at 14:02 -0500, Hal Finkel wrote: > > On Sat, 2011-10-29 at 12:30 -0500, Hal Finkel wrote: > > > Ralf, et al., > > > > > > Attached is the latest version of my autovectorization patch. llvmdev > > > has been CC'd (as had been suggested to me); this e-mail contains > >

On Sat, 2011-10-29 at 12:30 -0500, Hal Finkel wrote: > Ralf, et al., > > Attached is the latest version of my autovectorization patch. llvmdev > has been CC'd (as had been suggested to me); this e-mail contains > additional benchmark results. > > First, these are preliminary results because I did not do the things > necessary to make them real (explicitly quiet the

Ralf, et al., Attached is the latest version of my autovectorization patch. llvmdev has been CC'd (as had been suggested to me); this e-mail contains additional benchmark results. First, these are preliminary results because I did not do the things necessary to make them real (explicitly quiet the machine, bind the processes to one cpu, etc.). But they should be good enough for discussion.

Thanks everyone for you help with my last question, and now I have one last one... Here is a sample of my data in .csv format site,time_local,time_utc,reef_type_code,sensor_type,sensor_depth_m,temperature_c 06,2006-04-09 10:20:00,2006-04-09 20:20:00,BAK,sb39, 2, 29.63 06,2006-04-09 10:40:00,2006-04-09 20:40:00,BAK,sb39, 2, 29.56 06,2006-04-09 11:00:00,2006-04-09 21:00:00,BAK,sb39, 2, 29.51

Hello, I've been playing around with the really simple example of not cache friendly loop like this: #define N 100 void foo(int** __restrict__ a, int** __restrict__ b) { for (int i = 0; i < N; ++i) for (int j = 0; j < N; ++j) a[j][i] += b[j][i]; } link to compiler explorer:

Thanks for everyone's input so far, it is greatly appreciated. But I've got one last task I could use some advice on Here are the first few lines of my data set: site,time_local,time_utc,reef_type_code,sensor_type,sensor_depth_m,temperature_c 06,2006-04-09 10:20:00,2006-04-09 20:20:00,BAK,sb39, 2, 29.63 06,2006-04-09 10:40:00,2006-04-09 20:40:00,BAK,sb39, 2, 29.56 06,2006-04-09

R-devel, The performance of as.Date differs by a large degree between one of my machines with glibc 2.3.2: > system.time(x <- as.Date(rep("01-01-2005", 100000), format = "%m-%d-%Y")) [1] 1.17 0.00 1.18 0.00 0.00 and a comparable machine with glibc 2.3.3: > system.time(x <- as.Date(rep("01-01-2005", 100000), format = "%m-%d-%Y")) [1] 31.20

In findInterval's help page, it says 'v[i[j]] <= x[j] < v[i[j] + 1]'. I'm wondering if there is a variant of it such that 'v[i[j]] < x[j] <= v[i[j] + 1]'.

Dear R experts, For quite some time I have been trying to solve a mistery of reading a seemingly trouble-free text file. The data is temperature reconstruction arranged as a huge grid, preceded by seven "header lines" (which you see better if file is opened in Firefox or Chrome). This is the data (gridded temperature reconstruction)

Dear All, I am in a trouble with reading data. It is in txt file looking like this. 0.00632 18.00 2.310 0 0.5380 6.5750 65.20 4.0900 1 296.0 15.30 396.90 4.98 24.00 0.02731 0.00 7.070 0 0.4690 6.4210 78.90 4.9671 2 242.0 17.80 396.90 9.14 21.60 0.02729 0.00 7.070 0 0.4690 7.1850 61.10 4.9671 2 242.0 17.80 392.83 4.03 34.70 0.03237 0.00

Hi R, I have a list > class(pp2) [1] "list" > length(pp2) [1] 1244 It is in the below format RIC Trade.Date Close.Price Currency.Code Convertion.Rate New.Price ABCD.SZ 2008/02/29 15.30 CNY 0.1408 2.154240 ABCD.SZ 2008/01/31 15.27 CNY 0.1392 2.125584 ABCD.SZ 2007/12/31 14.88 CNY 0.1371 2.040048

nmbd has been dying on me occasionally. I'm running mandrake 9.2 with samba3-server-3.0.0-2mdk. We've got our users in ldap but I'd seen this symptom previously when I was using an earlier version of samba that didn't support ldap. There is nothing useful in the logs and a PS shows a nmb process still running. This last time around, I had a ptrace running on both nmbd

[sent this to ext2-devel but haven't seen any other traffic there, so cc-ing it here] [Last week] while configuring a new box I came across a site suggesting: chattr -R -S +j +A /var/spool/postifx to improve postfix's speed on ext3, in lieu of mounting a separate fs there w/ data=journal. So I tried it. Both on the new box (2.4.21-7um) and on my laptop (about three csets shy of the

Just now I ran tune2fs -j on the root filesystem of a box running 2.6.0-test8. Then I edited /etc/fstab and changed the FS type to from ext2 to ext3, saved the file, and invoked vim on the file again. A few moments after this, the box hung. Unfortunately X was running at the time, and so I don't have any messages to cite. Is this a known problem?

All -- I'm curious is if it safe or even wise to run the following command on a mounted filesystem, namely root (/)? tune2fs -j /dev/hda1 What about if someone goes into single user mode and runs this first? mount -o remount,ro / And then to enable it, runs this? mount -t ext2 -o remount,rw / I assume it is not safe to do so, but one user in my LUG assumes otherwise. Just curious,

Hi list, I just noticed in the chattr(1) man page that there exists a 'j' attribute which actually does the same thing that data=journal mount option would do, expect it only sets this property on the directories of my choice. Big Thanks to the one that came up with that idea :) It allows me to set +j on mail queues that must sit on the same partitions as the rest of the system (the guy

Hi All I have Googled the message Error in J[time] : invalid subscript type 'closure', but can't quite make sense from the results that I get. What does it mean? I'm trying to access an element in an array. Here is a short bit of code that produces the error: s_fun <- function(parms,time) { with(as.list(c(parms)),{ print(J[time]) }) } times = seq(from=0, to=100, by =

Hi: I have a query related to the J and Jcross functions in the SpatStat package. I use J to finding indications of clustering in my data, and Jcross to look for dependence between point patterns. I use the envelope function to do Monte Carlo tests to look for significance. So far so good. My question is how I can test to see if tests are significantly different. For example, if find J of

So, I'm building 3.0.23b for Slackware (since they don't have it out yet[1]), and I've noticed these two lines in the script that Slackware uses to build Samba 3.0.23 from source (which I'm modifying to build 3.0.23b): # -j options don't seem to work... make Anyone know why that comment might be there? Is it true that Samba can't be built with "-j2" or