search for: temporals

...are open to different approaches, hence this email instead of a patch. *Who's "we"?* Philip Reames brought this to my attention, and we've had numerous discussions with Hans Boehm on the topic. Any mistakes below are my own, all the clever bits are theirs. *Why?* Ignore non-temporals for a moment, on most x86 targets LLVM generates an mfence for seq_cst atomic fencing. One could instead use a locked idempotent atomic accesses to top-of-stack such as lock or4i [RSP-8] 0. Philip has measured this as equivalent on micro-benchmarks, but as ~25% faster in macro-benchmarks (other cod...

...> > Who's "we"? > > > Philip Reames brought this to my attention, and we've had numerous > > discussions with Hans Boehm on the topic. Any mistakes below are my > > own, all the clever bits are theirs. > > > Why? > > > Ignore non-temporals for a moment, on most x86 targets LLVM > > generates > > an mfence for seq_cst atomic fencing. One could instead use a > > locked > > idempotent atomic accesses to top-of-stack such as lock or4i > > [RSP-8] > > 0 . Philip has measured this as equivalent on micro-...

We are pleased to announce the following book: Spatial, Temporal and Spatial-Temporal Ecological Data Analysis with R-INLA Authors: Zuur, Ieno, Saveliev Book website: www.highstat.com Paperback or EBook can be order (exclusively) from www.highstat.com TOC: http://highstat.com/Books/BGS/SpatialTemp/Zuuretal2017_TOCOnline.pdf Summary: We explain how to apply linear regression models,

...; > > Architectures such as ARMv8 support non-temporal instructions and require > barriers such as DMB nshld to order loads and DMB nshst to order stores. > > > > Even ARM's address-dependency rule (a.k.a. the ill-fated > std::memory_order_consume) fails to hold with non-temporals: > > LDR X0, [X3] > > LDNP X2, X1, [X0] // X0 may not be loaded when the instruction executes! > > > > What exactly do you mean by ‘X0 may not be loaded’ in your example here? > If you mean that the LDNP > > could start executing with the value of X0 from before the...

Hello, My work deals with non-temporal loads and stores i found non-temporal meta data in llvm documentation but its not shown in IR. How to get non-temporal meta data? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180120/7dd4ba6f/attachment.html>

Hi R community! I'd like to create a temporal series with ts command for the interval 1st January 2002 - 31 December 2008. I have daily values, so this is a 2557 days temporal series. I'm using this command : ts(observations, start=2002, end=2009, freq=365) However, I don't get the correct temporal series since both frequency (365 OR 366 for leap years) and deltat (1/365 OR

Hello all, I've been wondering why Clang doesn't generate non-temporal stores when compiling the STREAM benchmark [1] and therefore doesn't yield optimal results. It turned out that the Loop Vectorizer correctly vectorizes the arithmetic operations and also merges the loads and stores into vector operations. However it doesn't add the '!nontemporal' metadata which would

i have already seen usage of __builtin_nontemporal_store but i want to automate identification of non temporal loads/stores. i think i need to go for a pass. is it possiblee to detect non temporal loops without polly? On Sat, Jan 20, 2018 at 11:26 PM, Simon Pilgrim <llvm-dev at redking.me.uk> wrote: > On 20/01/2018 18:16, hameeza ahmed wrote: > > Actually i am working on vector

Actually i am working on vector accelerator which will perform those instructions which are non temporal. for instance if i have this loop for(i=0;i<2048;i++) a[i]=b[i]+c[i]; currently it emits following IR; %0 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %index %1 = bitcast i32* %0 to <16 x i32>* %wide.load = load <16 x i32>, <16 x i32>* %1,

On 20/01/2018 17:44, hameeza ahmed via llvm-dev wrote: > Hello, > > My work deals with non-temporal loads and stores i found non-temporal > meta data in llvm documentation but its not shown in IR. > > How to get non-temporal meta data? llvm\test\CodeGen\X86\nontemporal-loads.ll shows how to create nt vector loads in IR - is that what you're after? Simon.

Dear All, I have a collections of spatial data. I have to analyze pairs of these point patterns to test their spatial interaction. I was moving towards the cross K Ripley's function. The problem, however, are the following: 1) What is the best way to get a single real value that represents the interaction "power"? 2) How to obtain a value that even allows me to rank the pairwise

On 20/01/2018 18:16, hameeza ahmed wrote: > Actually i am working on vector accelerator which will perform those > instructions which are non temporal. > > for instance if i have this loop > > for(i=0;i<2048;i++) > a[i]=b[i]+c[i]; > > currently it emits following IR; > > >   %0 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, > i64 %index

...vs. after question. In practice code using MOVNTA seems to assume > that you only need an SFENCE afterwards. I can't back that up with > spec verbiage. I don't know about MOVNTDQA. What about ARM? I'll leave this to JF to answer. I'm not knowledgeable enough about non-temporals to answer without substantial research first. > > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev -------------- next part -------------- An HTML attachment was...

On 01/20/2018 12:29 PM, hameeza ahmed via llvm-dev wrote: > i have already seen usage of __builtin_nontemporal_store but i want to > automate identification of non temporal loads/stores. i think i need > to go for a pass. is it possiblee to detect non temporal loops without > polly? Yes, but we don't have anything that does that right now. The cost modeling is non-trivial,

Hola a todos: La pregunta ha quedado clara en el asunto, pero: ¿existe alguna función que convierta un objeto temporal (TS) a matriz o data.frame? En algunos cálculos que estoy haciendo me viene bien convertir un objeto temporal a matriz para poder hacer cálculos parciales por meses o años (aplicando apply en la matriz) pero no he encontrado ninguna función que haga la conversión. He

On Mon, Jan 4, 2010 at 8:43 PM, Chandler Carruth <chandlerc at google.com> wrote: > On Mon, Jan 4, 2010 at 1:13 PM, James Y Knight <foom at fuhm.net> wrote: >> Hi, thanks everyone for all the comments. I think maybe I wasn't clear that >> I *only* care about atomicity w.r.t. a signal handler interruption in the >> same thread, *not* across threads. Therefore,

On Mon, Jan 4, 2010 at 8:51 PM, Jeffrey Yasskin <jyasskin at google.com> wrote: > On Mon, Jan 4, 2010 at 8:43 PM, Chandler Carruth <chandlerc at google.com> wrote: >> On Mon, Jan 4, 2010 at 1:13 PM, James Y Knight <foom at fuhm.net> wrote: >>> Hi, thanks everyone for all the comments. I think maybe I wasn't clear that >>> I *only* care about

Hello We would like to perform a logistic regression analysis weighting the independent variable in a temporal fashion, i.e. events occuring most recent get highest weight. Does anyone know how to do this in R?? Regards S. Merser and S. Lophaven

On Feb 11, 2010, at 12:07 PM, David Greene wrote: > On Thursday 11 February 2010 14:02:13 Dan Gohman wrote: > >>>> Putting a bit (or multiple bits) in MachineMemOperand for this >>>> would also make sense. >>> >>> Is there any chance a MachineMemOperand will be shared by multiple >>> instructions? >> >> Yes. > > Then

Estimados usuarios de R: Tengo que hacer una desagregación temporal de una serie anual del producto interno bruto en trimestral. ¿Hay alguna forma de utilizar la librería en matlab de Quilis de desagregación temporal en R? La libreria se puede bajar de http://www.mathworks.com/matlabcentral/fileexchange/24438-temporal-disaggregation-library Saludos, Sebastián.