search for: tempor

Hello, fencing enthusiasts! *TL;DR:* We'd like to propose an addition to the LLVM memory model requiring non-temporal accesses be surrounded by non-temporal load barriers and non-temporal store barriers, and we'd like to add such orderings to the fence IR opcode. We are open to different approaches, hence this email instead of a patch. *Who's "we"?* Philip Reames brought this to my attentio...

Hi JF, Philip, Clang currently has __builtin_nontemporal_store and __builtin_nontemporal_load. How will the usage model for those change? Thanks again, Hal ----- Original Message ----- > From: "Philip Reames via llvm-dev" <llvm-dev at lists.llvm.org> > To: "JF Bastien" <jfb at google.com>, "llvm-dev"...

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...

On Wed, Jan 13, 2016 at 10:32 AM, John Brawn <John.Brawn at arm.com> wrote: > *What about non-x86 architectures?* > > > > 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, [...

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....

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 frequenc...

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'...

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...

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, al...

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.

...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 point patterns according to their interaction "power"? PS: I have to perform the same analysis for temporal interaction and spatio-temporal interaction. Thanks in advance for your help Best Regards Massimiliano Ruocco

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 >   %1 = bitcast i32* %0 to <16 x i32>* >  ...

...instruction. > > My understanding is that Alpha would have the same > problem for normal loads. > > I'm all in favor of more systematic handling of > the fences associated with x86 non-temporal accesses. > > AFAICT, nontemporal loads and stores seem to have > different fencing rules on x86, none of them very > clear. Nontemporal stores should probably ideally > use an SFENCE. Locked instructio...

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, however. In the lo...

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 «fabricado» una para el...

...the implementation > of these aspects of the x86 architecture is that they shouldn't have a > particularly high overhead. > >>> The processor can reorder memory operations as well (within limits). >>> Consider that 'memset' to zero is often codegened to a non-temporal >>> store to memory. This exempts it from all ordering considerations >> >> My understanding is that processor reordering only affects what you might >> see from another CPU: the processor will undo speculatively executed >> operations if the sequence of instructi...

...>> of these aspects of the x86 architecture is that they shouldn't have a >> particularly high overhead. >> >>>> The processor can reorder memory operations as well (within limits). >>>> Consider that 'memset' to zero is often codegened to a non-temporal >>>> store to memory. This exempts it from all ordering considerations >>> >>> My understanding is that processor reordering only affects what you might >>> see from another CPU: the processor will undo speculatively executed >>> operations if the s...

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

...; 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 we can't use it to hold a non-temporal flag. The operand might be > non-temporal in one context but it may not be in another. Sharing only happens when two instructions have the "same" memory reference info. You just need to make sure that the non-temporal flag is significant. It's not fundamentally different from...

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...