search for: humphreys

...loop, making the outer loop non-trivially parallel. > > But these are probably rare cases as, at least in pocl, basic > optimizations have already been executed before the work-group > function generation where the parallel work-item loops are created. > > On 05/10/2014 12:08 AM, Humphreys, Jonathan wrote: >> I propose that we change the first paragraph of >> http://llvm.org/docs/LangRef.html#llvm-mem-parallel-loop-access-metadata: >> >> --- >> For a loop to be parallel, in addition to using the llvm.loop metadata to >> mark the loop latch branch i...

...ndering if others have any anecdotal evidence of how often we 'loose' the fact that a loop is parallel because of inserting memory instructions during optimizations. Thanks Jon -----Original Message----- From: Hal Finkel [mailto:hfinkel at anl.gov] Sent: Monday, May 05, 2014 5:14 PM To: Humphreys, Jonathan Cc: Pekka Jääskeläinen; llvmdev at cs.uiuc.edu; Tobias Grosser Subject: Re: [LLVMdev] parallel loop metadata question ----- Original Message ----- > From: "Jonathan Humphreys" <j-humphreys at ti.com> > To: "Hal Finkel" <hfinkel at anl.gov>, "Tob...

...with the proposed semantics but rather with the use - that optimizations must respect the loop for which the metadata applies, correct? Thanks Jon -----Original Message----- From: Hal Finkel [mailto:hfinkel at anl.gov] Sent: Monday, May 05, 2014 4:00 AM To: Tobias Grosser Cc: Pekka Jääskeläinen; Humphreys, Jonathan; llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] parallel loop metadata question ----- Original Message ----- > From: "Tobias Grosser" <tobias at grosser.es> > To: "Pekka Jääskeläinen" <pekka.jaaskelainen at tut.fi>, "Jonathan > Humphreys&quot...

...the simd construct itself, LLVM will require infrastructure work to know when a lexically backwards dependence may have been introduced. Jon -----Original Message----- From: Tian, Xinmin [mailto:xinmin.tian at intel.com] Sent: Monday, September 29, 2014 10:43 AM To: Renato Golin; Hal Finkel Cc: Humphreys, Jonathan; Robison, Arch; LLVM Dev Subject: RE: [LLVMdev] Proposal for ""llvm.mem.vectorize.safelen" Renato, I think Hal meant to ensure partial ordering, e.g. not to convert lexical forward data dep to lexical backward data dep due to statement ordering if any. ' Xinmin ----...

...safe vector length VL. We will make this clear in the OpenMP 4.1 spec. Xinmin Tian (Intel) -----Original Message----- From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Hal Finkel Sent: Sunday, September 28, 2014 12:59 AM To: Robison, Arch Cc: Jonathan Humphreys; LLVM Dev Subject: Re: [LLVMdev] Proposal for ""llvm.mem.vectorize.safelen" ----- Original Message ----- > From: "Arch Robison" <arch.robison at intel.com<mailto:arch.robison at intel.com>> > To: "Jonathan Humphreys" <j-humphreys at ti.co...

...g some from Intel) intended that the OpenMP simd construct assert no lexically backward dependences exist, but as you say, it's not obvious from the spec. One of our OpenMP community members is going to bring up the ambiguity with the OpenMP committee. - Arch -----Original Message----- From: Humphreys, Jonathan [mailto:j-humphreys at ti.com] Sent: Thursday, August 28, 2014 11:53 AM To: Robison, Arch; Hal Finkel; Renato Golin; Alexander Musman (alexander.musman at gmail.com) Cc: LLVM Dev Subject: RE: [LLVMdev] Proposal for ""llvm.mem.vectorize.safelen" Well, having not understood...

On 05/05/2014 10:14, Pekka Jääskeläinen wrote: > On 05/02/2014 07:22 PM, Humphreys, Jonathan wrote: >> Thanks for the link. I understand your concern of caution with metadata. >> I cannot, though, imagine how the dependence relation (independence) >> of two >> memory references can be affected by a third memory reference. If two >> references are i...

Hi all, I'm trying to figure out a way to create a data graphic that I haven't ever seen an example of before, but hopefully there's an R package out there for it. The idea is to essentially create a heatmap, but to allow each column and/or row to be a different width, rather than having uniform column and row height. This is sort of like a Marimekko chart in appearance, except that

First allow me to issue this disclaimer... The following problem is most likely due to my own ignorance. Now on to the problem... I'm setting up some printer shares that allow automatic driver installation to Win 9x clients [printer$]. When we try to use these, the drivers install beautifully, but we get the following error message when we try to print: "There was an error writing to

Hi there, What''s the current status of the Windows port? I may be in a position to lend a hand over the next couple of weeks - where should I start looking? And what''s the best way to get SVN HEAD? This happens: $ svn checkout svn://www.davebalmain.com/ferret/trunk ferret svn: Can''t connect to host ''www.davebalmain.com'': Connection refused --

Does anyone know how to retrieve the R squared value for a line on a graph? Thanks Georgina

...tml has tidy. is there anything that would format ruby source? i looked around, but googling on ''ruby format'' is maybe not so useful. i''d love to get something that would batch an entire app/ directory... (which i realize, suggests *.rhtml as well.) thanks! -- David Humphreys dave@dbhumphreys.com

...ata format. For instance, what's the best way to store a distance matrix as metadata? - I agree with Hal's request that we don't use the name 'safelen' I'm fine with the "minimum_dependence_distance" if everyone else is. - Arch -----Original Message----- From: Humphreys, Jonathan [mailto:j-humphreys at ti.com] Sent: Wednesday, August 27, 2014 5:37 PM To: Robison, Arch; Hal Finkel; Renato Golin; Alexander Musman (alexander.musman at gmail.com) Cc: LLVM Dev Subject: RE: [LLVMdev] Proposal for ""llvm.mem.vectorize.safelen" Sorry for coming to the dis...

...nd I''d like to let them have access to pieces of Rails, but I''d like to manage them through Contribute or some such. I *could* wiki them up, but that seems like a lot of work for pages that don''t get updated that often (yearly or so). Thanks in advance! - Dave -- David Humphreys dave@dbhumphreys.com

On 28 September 2014 22:09, Hal Finkel <hfinkel at anl.gov> wrote: > Thanks Xinmin! > > So we'll need a method to ensure the correct (partial) ordering. I thought that the idea was to avoid computing loop dependencies when safelen is specified, at least at that level. We might do it to a greater length, but we should assume it to be safe for distances < VL. We still need

...ird memory reference. If two references are independent across loop iterations, then they are independent, and any other load or store cannot change that. Right? Jon -----Original Message----- From: Pekka Jääskeläinen [mailto:pekka.jaaskelainen at tut.fi] Sent: Friday, May 02, 2014 3:37 AM To: Humphreys, Jonathan; llvmdev at cs.uiuc.edu Cc: Daniel Berlin Subject: Re: [LLVMdev] parallel loop metadata question On 05/02/2014 01:49 AM, Humphreys, Jonathan wrote: > Here's where I have a question: > > - if not all memory instructions in a loop have this metadata, can the > compiler sti...

Hi, I''m currently trying to set up a solution involving multiple servers using the same index over nfs. The problem is that from what I have seen, ferret doesn''t support multiple processes writing to the same index. Using a DRb service is not an option since this would create a single point of failure. I tried using Ferret::Store::FSDirectory to create a write lock on the the

Hi Everyone, I''m using Ferret 0.10.11 with acts_as_ferret from SVN (same results with 0.10.10 and 0.10.9 though). I''m running into an odd problem where the scores of my top-ranking search results are ridiculously small - even when the query is one that should match at least one document with a decent score. To give an example, I have just the names of 5 businesses indexed

Hey folks, I''m off to Vietnam for a week on my way home to Australia so I''ll be off the list for a while. Don''t think I''m ignoring you. When I get back I intend to aggressively hunt down the segfault problem that some of you are having in Ferret so that problem will soon be ancient history. If anyone can narrow down a test case that can consistently segfault it

If I have a set of data comprising a list of numbers of eggs on mosquito guts that range from 1 to 157. How can I get R to draw a barchart of the distribution of the data (i.e. x axis= number of eggs on a gut, y axis=number of mosquitoes found with that number of eggs)? Data is listed below. Thanks, Georgina Number of eggs on each mosquito gut: [1] 1 1 1 1 4 2 1 12 12 1 2