aserio changed the topic of #ste||ar to: STE||AR: Systems Technology, Emergent Parallelism, and Algorithm Research | stellar.cct.lsu.edu | HPX: A cure for performance impaired parallel applications | github.com/STEllAR-GROUP/hpx | Buildbot: http://rostam.cct.lsu.edu/ | Log: http://irclog.cct.lsu.edu/
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<verganz>
Is threre any matrix class in LibGeoDecomp? to multiply by Coord<3> variables for example
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<Viraj>
Hi, I wanted to ask again as to how do I generate the trace file for a program execution?
<Viraj>
They basically provide information of how much time a task within a program ran and some other details based on the task's properties
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<Viraj>
Anybody?
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<Anushi1998>
heller: I want to discuss something regarding agas service.Good time to proceed?
<heller>
Just ask
<Anushi1998>
I have studied that first 64 bits are used to address the locality,So that if we can cache address from locality cache.
<Anushi1998>
So is something special needed to be done after we have traversed 64 bits in (say) trie, like we need to point it towards that locality.
<Anushi1998>
Correct me if I am in wrong direction :)
<Anushi1998>
Also then say if our component is moved then we need to update our ds in midway(64 bit)
<Anushi1998>
heller: ^
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<heller>
Anushi1998: During migration, the gids aren't updated
<heller>
So yeah, locality + component + ???
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<Anushi1998>
yeah but the localities will be
<Anushi1998>
so I just wanted to confirm that after 64 bits if we are pointing to locality then we need to update that?
<Anushi1998>
Also, one thing I couldn't find is where is struct HPX_EXPORT implemented?As gid_type is defined to be of HPX_EXPORT type in naming_fwd.hpp
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<zao>
anushi: HPX_EXPORT is a macro that ensures that the type or function it decorates is exported/imported properly from DLLs/so files.
<zao>
So `struct gid_type` is a type that's intended to be consumed across an OS module boundary.
<anushi>
zao: thanks :)
<zao>
On Windows it essentially means `__declspec(export)` and `__declspec(import)` decoration, while on Linux and similar platforms it's some sort of `attribute((((((visibility(default)))))))` attribute.
<zao>
(I've got no idea about the spelling of the last one :P )
<victor_ludorum>
Actually, after this comment there is a line #if defined(HPX_MSVC_WARNING_PRAGMA) #pragma warning(push) #pragma warning(disable: 4244)
<victor_ludorum>
So, I just want to ask is that line doing the conversion from 'const __int64' to 'const double'
<zao>
The pragmas are just muting the warning on MSVC.
<victor_ludorum>
Okay sir
<zao>
Some actual code does an implicit conversion.
<victor_ludorum>
Actually it was written just beneath therefore, I have confusion
<zao>
Indeed not that obvious what is going on if you're not familiar with the spelling of the error and the use of pragmas :)
<victor_ludorum>
zao: Okay sir!! One more help if you don't mind can you provide the link for the documentation where all HPX_EXPORT, HPX_THROWS_IF are written so that I can get the proper details of their functioning
<zao>
Not really sure if it's documented much, as it's a common pattern in any library that may be used as a DLL.
<zao>
I'm surprised that they all actually built. I wonder if they can also compile code :)
<zao>
victor_ludorum: In general, such internal infrastructure is probably not too documented in user-facing documentation, as they're not quite part of how to use HPX.
<zao>
(I wouldn't know, I haven't read it)
<victor_ludorum>
zao: Okay Sir, Actually I am having problem in that because I don't know about it .
<victor_ludorum>
Therefore, I have asked if I can get any help.
<zao>
`git grep`, github's "this repository" search box and the `t` key on github to find files are my best friends when I'm in a new codebase.
<zao>
The `t` key lets you type parts of filenames and quickly find it in the web interface, which is awesome.
<K-ballo>
`t`?
<K-ballo>
oh damn!
<K-ballo>
and here I was, navigating the tree like a..
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<zao>
Been there, done that!
<zao>
`?` gets you the quick list of shortcuts.
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<Viraj>
which malloc should one use? tcmalloc or jemalloc
<Anushi1998>
Viraj: As far as I know, tcmalloc
<zao>
Varies a bit among OSes, but tcmalloc is the suggested one for Linux IIRC.
<Viraj>
okay thanks for the clarification
<zao>
Thanks for the reminder, forgot to install libgoogle-perftools-dev in my container.
<Anushi1998>
hkaiser:You have created benchmark tests for testing performance of B-Tree and AVL in GID.Can you please share that code for benchmark tests and these DS, it would be of great help to understand what is expected
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<github>
[hpx] hkaiser closed pull request #3233: Make schedule_thread take suspended threads into account (master...fix-schedule_thread) https://git.io/vxfJW
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<Anushi1998>
hkaiser: You have created benchmark tests for testing performance of B-Tree and AVL in GID.Can you please provide the link to that code for benchmark tests and these DS, it would be of great help to understand what is done till now and what is expected.(What I can found is for std::map)
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<hkaiser>
Anushi1998: yah
<hkaiser>
Anushi1998: I need to find the code, but as I remember that work was underwhelming
<hkaiser>
he worked for 6 weeks with essentially no results whatsoever
<Anushi1998>
If you could share that code it would be of great help
<Anushi1998>
I just want to get an idea about the work done till now
<hkaiser>
will try to fin dit, I need to ask around
<Anushi1998>
So that I can better get the problem
<Anushi1998>
Thanks :)
<hkaiser>
Anushi1998: I think he just did some comparisons of various associative containers