K-ballo 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/
<gnikunj[m]>
also, writing executors is really easy!
<hkaiser>
gnikunj[m]: ok, thanks!
<gnikunj[m]>
hkaiser: I updated the code again just now
<hkaiser>
gnikunj[m]: I'll have a look tomorrow
<gnikunj[m]>
ohh ok. I'll sleep too then ;)
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<ms[m]>
gnikunj: indeed it doesn't, it has parallel for, reduce, and scan (and some tasky stuff)
<ms[m]>
that's one of the reasons hpx-kokkos exists
<ms[m]>
but the async_execute in kokkos executors is mostly for some sort of completeness, even the bulk_async_execute... they exist mainly for customizing the hpx parallel algorithms
<ms[m]>
note how async_execute is implemented in the kokkos executors
<gonidelis[m]>
ms[m]: i actually was working on them right now
<ms[m]>
looks like builds have been starting ok after those failures you saw, so I'm assuming it'll go on just fine; let me know if it doesn't
<gonidelis[m]>
at first I thought that these should remain as is. but then I realised that the ranges overloads do support projections so I am moving them to the container tests right now ;)
<gonidelis[m]>
i mean... there is no local parameter defined
<gonidelis[m]>
it just "passes the type". Is it because it wants for the lambda expression to be aware of the type in order to use it as a return type?
<ms[m]>
gonidelis[m]: do you mean why does it take a parameter as opposed to not taking any parameters?
<gonidelis[m]>
ms[m]: yes...
<ms[m]>
because that's what a projection is, it transforms one thing into another, but that doesn't mean it has to use the first thing at all
<gonidelis[m]>
so it transforms a const-ref to a ref?
<ms[m]>
references are unrelated to it
<ms[m]>
it could take by value and return by value as well
<gonidelis[m]>
but isn't `DataType const&` param a const ref?
<ms[m]>
yes... are you talking about projections in general or that particular projection?
<gonidelis[m]>
that particular one
<ms[m]>
it takes something by const reference and returns a (non-const) reference to something else
<gonidelis[m]>
ok thanks. that's what i expected. so the point of not declaring `DataType const& a` as param is because it won't use `a` at all?
<ms[m]>
gonidelis[m]: exactly
<gonidelis[m]>
someone should tell the standardization guys to rename `remove_copy` to `copy_if_not` ... it sounds like it is just creating more confusion
<srinivasyadav227>
Scanning dependencies of target template_function_accumulator_component
<srinivasyadav227>
[ 65%] Building CXX object examples/accumulators/CMakeFiles/template_function_accumulator_component.dir/template_function_accumulator.cpp.o
<srinivasyadav227>
c++: fatal error: Killed signal terminated program cc1plus
<rori>
which compiler version
<rori>
?
<ms[m]>
and more importantly... how much memory? that looks like what usually happens if you run out of memory
<ms[m]>
retry with make (-j1)
<gnikunj[m]>
freenode_srinivasyadav227[m] looks like it's triggered because you were out of memory. It is recommended that your build system should have at least 2gb per thread. So if you do make -j6, you should have at least 12gb ram available. If you do a make -j, you should have $(nproc)*2 ram available.
<rori>
hkaiser: see pm please :)
<gnikunj[m]>
Try doing a simple make and see if that makes it work for you.
<ms[m]>
note: make -j is the system-killer (it doesn't actually limit the number of jobs to nproc, it just spawns as much as the dag allows)
<gnikunj[m]>
ms didn't know it didn't restrict to nproc.
<ms[m]>
ninja without the -j flag does exactly that by default
<ms[m]>
I've killed login nodes with make -j and hpx...
<srinivasyadav227>
<ms[m] "and more importantly... how much"> yea actually docker container running with 2GB memory..so I should I have at least 4GB right with make -j2?
<srinivasyadav227>
now I am doing simple make..so far its working fine 72 % done
<gnikunj[m]>
have 4gb and do make -j1
<srinivasyadav227>
okay! currently its running simple make (2GB), once done I will change to 4GB and do make -j1
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<gonidelis[m]>
hkaiser: do you think #5125 is ok now?
<hkaiser>
gonidelis[m]: need to look again
<gonidelis[m]>
ok sure
<gonidelis[m]>
np ;)
<hkaiser>
gonidelis[m]: feel free to start working on other things already
<gonidelis[m]>
hkaiser: i have already done so ;)
<gonidelis[m]>
is it me or this test is not called at all?