Displaying 20 results from an estimated 3000 matches similar to: "LLVM flags for Vectorization"
2016 Aug 25
2
Questions on LLVM vectorization diagnostics
Hi, Gerolf.
We've been a bit quiet for some time. After listening to feedback on the project internally and externally,
we decided to take a more generally accepted community development model ---- building up through
a collection of small incremental changes ---- than trying to make a big step forward. That change of course
took a bit of time, but we are getting close to the first NFC patch
2016 Oct 27
2
Bug with auto-vectorization of logf
Hi,
I intended to file this bug on Bugzilla, but I've received no response from
llvm-admin in the 10 days since asking for a Bugzilla account.
I've written 2 test functions in C that take in a float array x of size n
and output float array f(x), where f is either fabsf or logf. The LLVM 3.9
auto-vectorization docs claim that both functions will be vectorized:
2002 Jun 21
4
configure problem --- Can't find recent OpenSSL libcrypto
Hello Gurus,
I tried my best as I can to do RTFM and Googling to find any information to
solve the problem myself which I failed.
I installed OpenSSL 0.9.6d 9 May 2002 with this option on a Solaris 8 box
using Sun Forte6-2
$config solaris64-sparcv9-cc --prefix=/local/santanu/pkg/ssl
Now I am trying to install openssh 3.2.3p1 and getting this error.
configure:8285: error: *** Can't find
2016 Aug 30
2
Questions on LLVM vectorization diagnostics
Hi Hideki,
Thanks for the interesting writeup!
> On Aug 27, 2016, at 7:15 AM, Renato Golin via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> On 25 August 2016 at 05:46, Saito, Hideki via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> Now, I have one question. Suppose we'd like to split the vectorization decision as an Analysis pass and vectorization
2016 Oct 27
0
Bug with auto-vectorization of logf
+Tanya for the account issue.
> On Oct 27, 2016, at 11:36 AM, Eric Martin via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> Hi,
> I intended to file this bug on Bugzilla, but I've received no response from llvm-admin in the 10 days since asking for a Bugzilla account.
>
> I've written 2 test functions in C that take in a float array x of size n and output
2007 May 02
2
how to reproduce the same sampled units?
Hi all,
Is it possible to generate the same sample number of times in R? In
SAS, using the option "seed" it is possible to reproduce exactly the
same sample. Is there any such feature in R which I can use?
For further clarity,
for (i in 1:2)
{
samp = sample(1:1000,100,replace = FALSE)
print(samp)
}
For the above simulation, is it possible to generate the same sampled
units
2016 Oct 28
1
Bug with auto-vectorization of logf
Eric,
I apologize for any delay or confusion. From my records/list archives, I saw that Anton had created an account for you on Oct 17th and responded to your email to llvm-admin. I am not sure what happened after that point as I thought the account was done.
I just confirmed there is an account for you in bugzilla, so you should be good to go if you reset your password.
-Tanya
> On Oct 27,
2011 Jan 05
1
Reading large SAS dataset in R
Hi all,
I have a large (approx. 1 GB) SAS dataset (test.sas7bdat) located in the
server (“R:/” directory). I have SAS 9.1 installed in my PC and I can read
the SAS dataset in SAS, under a windows environment, after assigning libname
in "R:\" directory.
Now I am trying to read the SAS dataset in R (R 2.12.0) using the read.ssd
function of the “foreign” package, but I get an error
2007 Oct 24
1
plot within a loop
Hi ,
I'm having problem with the following plot. Basically I have to do
51(length of d, see below) plots. I want 6 plots (say) in a page and
rests are in different pages. win.graph() starts a plot in new page. But
I'm not being able to combine par(mfrow = c(3,2)) and win.graph() within
a loop.
> d
[1] 14.108 13.883 11.022 13.426 2.341 9.010 12.868 15.603 30.810
3.931 11.825
2017 Aug 21
2
Vectorization in LLVM x86 backend
Hi all,
Recently I compiled the attached .c file using Clang with "-mavx2 -mfma
-m32 -O3" optimization flags.
First I used -emit-llvm and inspected the LLVM IR and there are no vector
instructions. Then I got the assembly output of the file in it I can
clearly see vector instructions in it.
Neither the SLPVectorizer or the LoopVectorizer is however doing any
vectorization (also
2010 Aug 19
1
request for Wiki access
Hi there,
Please find the required information below:
username : SantanuDas
subject : OS X intregration: Enabling AFPD (Netatalk)
location : Networking tips
ref:
https://www.centos.org/modules/newbb/viewtopic.php?topic_id=27658&forum=38
Cheers,
Santanu
2007 Aug 22
3
integrate
Hi,
I am trying to integrate a function which is approximately constant
over the range of the integration. The function is as follows:
> my.fcn = function(mu){
+ m = 1000
+ z = 0
+ z.mse = 0
+ for(i in 1:m){
+ z[i] = rnorm(1, mu, 1)
+ z.mse = z.mse + (z[i] - mu)^2
+ }
+ return(z.mse/m)
+ }
> my.fcn(-10)
[1] 1.021711
> my.fcn(10)
[1] 0.9995235
> my.fcn(-5)
[1] 1.012727
> my.fcn(5)
2017 Aug 21
2
Vectorization in LLVM x86 backend
I isolated the LLVM IR and the X86 instructions emitted for the function
and are attached herewith and it is clearly emitting vector instructions. I
am having a hard time figuring out where the vector instructions are
formulated. For sure SLP and Loop vectorizer is not doing anything.
On Mon, Aug 21, 2017 at 11:56 AM, Craig Topper <craig.topper at gmail.com>
wrote:
> The X86 backend
2012 Dec 13
1
About new test cases for Durable handle version 2
Hi,
I am not sure if I am addressing to the correct audience. So apologize for
the that.
I found in the existing smbtorture test suit do not have much test cases
related to durable handle version 2 that is supported for SMB version 3 .
I have done some work on that and would like to contribute on that filed.
Can anyone let me know the process for that?
Thanks in advance,
Santanu
2017 Aug 05
2
LLVM Vectorisation Bug
I have matrix multiplication and stencil code. I vectorise it through the
following command.
opt -S -O3 -force-vector-width=2048 stencil.ll -o stencil_o3.ll
in both the examples of matrix mult and stencil it vectorises fine when my
loop iterations >2048. but if i keep both iterations and vector width=2048.
it produces scalar code IR not vectorizes it.
Is it llvm bug?
Please help me.
2003 Dec 14
5
reverse lexicographic order
Hi all,
I have some email addresses that I would like to sort in reverse
lexicographic order so that addresses from the same domain will be
grouped together. How might that be done?
Murray
--
Dr Murray Jorgensen http://www.stats.waikato.ac.nz/Staff/maj.html
Department of Statistics, University of Waikato, Hamilton, New Zealand
Email: maj at waikato.ac.nz
2017 Dec 16
0
Finding center of mass in a hydrologic time series
Hi Eric,
How about
match( TRUE, cumsum(hyd/sum(hyd)) > .5 ) - 1
HTH,
Eric
On Sat, Dec 16, 2017 at 3:18 PM, Morway, Eric <emorway at usgs.gov> wrote:
> The small bit of script below is an example of what I'm attempting to do -
> find the day on which the 'center of mass' occurs. In case that is the
> wrong term, I'd like to know the day that essentially cuts
2017 Dec 18
0
Finding center of mass in a hydrologic time series
Hi Eric,
the following works for me.
HTH,
Eric
library(EGRET)
StartDate <- "1990-10-01"
EndDate <- "2017-09-30"
siteNumber <- "10310000"
QParameterCd <- "00060"
Daily <- readNWISDaily(siteNumber, QParameterCd, StartDate, EndDate)
# Define 'center of mass' function
com <- function(x) {
match(TRUE, cumsum(x/sum(x)) > 0.5) -
2017 Dec 16
3
Finding center of mass in a hydrologic time series
The small bit of script below is an example of what I'm attempting to do -
find the day on which the 'center of mass' occurs. In case that is the
wrong term, I'd like to know the day that essentially cuts the area under
the curve in to two equal parts:
set.seed(4004)
Date <- seq(as.Date('2000-09-01'), as.Date('2000-09-30'), by='day')
hyd <-
2016 Oct 10
2
On Loop Distribution pass
> On Oct 10, 2016, at 2:50 PM, Hal Finkel <hfinkel at anl.gov> wrote:
>
>
> From: "Dangeti Tharun kumar via llvm-dev" <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>>
> To: llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
> Cc: "Santanu Das" <cs15mtech11018 at iith.ac.in <mailto:cs15mtech11018 at