Trac August 2021

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Erik Schnetter 12 Aug '21

12 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Erik Schnetter): Yes, external libraries really want traditional compiler settings. I always build external libraries externally; I think it was a mistake to use Cactus’s build system for that $downloads are large, build times are large, external libraries are not shared across configurations, etc.$ I’m using Spack for all external libraries these days. We could introduce `EXTERNAL_CC` etc. which we would use in external libraries. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Roland Haas 12 Aug '21

12 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Roland Haas): That one also worked for me, and is what I used at first. However it fails to compile the ExternalLibraries. I am not 100% sure why but two issues seem to be that CMake really does not like $CXX to be more than one word and then that “-x cu” seems to also interpreset \*.o files as source files ocompile, which of course leas to failures. I also have to add `-DSIMD_CPU` to avoid issues in Arith where I otherwise get an error that the return value of a constexpr function must be of integral type $this is with gcc 10.1 as the host complier so sufficiently modern$. This work is part of an effort is to avoid having to do any of this and be able to use a more regular Cactus build setup where one can use the ExternalLibraries to automatically build the required libraries which should help reduce the amount of build failures when one starts with CarpetX. I will attach a thornlist once I have tested things once or twice on my latpop $with and without GPU$ and on some cluster. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Erik Schnetter 11 Aug '21

11 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Erik Schnetter): I didn’t realize you had trouble compiling these thorns. ‌ For me, these settings work: ```shell CXX = /home/eschnetter/Cactus/view-cuda/bin/nvcc --compiler-bindir /home/eschnetter/Cactus/view-cuda-compilers/bin/g++ -x cu CXXFLAGS = -pipe -g --compiler-options -march=native -std=c++17 --compiler-options -std=gnu++17 --expt-relaxed-constexpr --extended-lambda --gpu-architecture sm_75 --forward-unknown-to-host-compiler --Werror cross-execution-space-call --Werror ext-lambda-captures-this --relocatable-device-code=true --objdir-as-tempdir ``` with standard Cactus. This uses `nvcc` for all C\+\+ code as well as for linking. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Roland Haas 11 Aug '21

11 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Roland Haas): And version 8aa7a36 lets me compile CarpetX, Z4c, Weyl, AMReX. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Roland Haas 11 Aug '21

11 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Roland Haas): Well making LD be nvcc gives me extra trouble when compiling ExternalLibraries $same sort of issues that come from having Cactus LIBS mean something different then autoconf’s LIBS$. Instead I peeked at Formaline and wrote a short ExternallLibraries/CUDA thorn that adapts Cactus' link step based on the documentation by NVIDIA. The thorn is here: [https://github.com/rhaas80/ExternalLibraries-CUDA.git](https://github.com/r… and the trick is to collect all CUDA code in a new library using nvcc $just as NVIDIA shows$: ``` CACTUSLIBLINKLINE += -l$(CCTK_LIBNAME_PREFIX)CUDA-gpucode CUDA-LIB = $(CCTK_LIBDIR)/$(LIBNAME_PREFIX)$(CCTK_LIBNAME_PREFIX)CUDA-gpucode$(LIBNAME_SUFFIX) $(EXEDIR)$(DIRSEP)$(EXE): $(CUDA-LIB) # TODO: make this depend on only the thorns that REQUIRE CUDA # TODO: check if depending on LINKLIST would be enough $(CUDA-LIB): $(CONFIG)/make.thornlist $(CONFIG)/cctki_version.h $(patsubst %,$(CCTK_LIBDIR)/$(LIBNAME_PREFIX)$(CCTK_LIBNAME_PREFIX)%$(LIBNAME_SUFFIX),$(notdir $(THORNS) $(CACTUSLIBS))) $(CCTK_LIBDIR)/LINKLIST $(CUCC) $(patsubst %,$(CCTK_LIBDIR)/$(LIBNAME_PREFIX)%$(LIBNAME_SUFFIX),$(ALLCACTUSLIBS)) -dlink -o $@ if test "x$(USE_RANLIB)" = "xyes"; then $(RANLIB) $(RANLIBFLAGS) $@; fi @echo $(DIVIDER) ``` which lets me compile this thornlist: ``` ExternalLibraries/CUDA ``` and run this parfile: ``` ActiveThorns = CUDA CUDA::test = yes ``` I think this should work, though I have not tested it on a system where `-filelist` is actually supported $given that Linux does not, I assume nothing does anymore$, in which case maybe there are no libthornFOO.a files but only the raw object files. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Erik Schnetter 11 Aug '21

11 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Erik Schnetter): We can certainly change the way Cactus handles things. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS
by Roland Haas 11 Aug '21

11 Aug '21

#2553: Cactus' link command uses CPPFLAGS and CXXFLAGS Reporter: Roland Haas Status: open Milestone: Version: development version Type: bug Priority: minor Component: Cactus Comment (by Roland Haas): Apparently using g\+\+ to link CUDA code is advanced use $or at least was in 2014$. [https://developer.nvidia.com/blog/separate-compilation-linking-cuda-device-… It requires that one pre-links the object files to extract CUDA device code into a form that g\+\+ understands. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2553/cactus-link-comma…

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#2551: include RePriMand in the ET
by Roland Haas 11 Aug '21

11 Aug '21

#2551: include RePriMand in the ET Reporter: Roland Haas Status: new Milestone: Version: development version Type: enhancement Priority: major Component: Comment (by Roland Haas): Also see #2414 for a similar framework. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2551/include-reprimand…

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#2534: Evolution of grid arrays with Mol no longer works
by Roland Haas 11 Aug '21

11 Aug '21

#2534: Evolution of grid arrays with Mol no longer works Reporter: Status: resolved Milestone: Version: development version Type: bug Priority: major Component: Carpet Changes (by Roland Haas): status: resolved (was new) -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2534/evolution-of-grid…

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#2534: Evolution of grid arrays with Mol no longer works
by Roland Haas 11 Aug '21

11 Aug '21

#2534: Evolution of grid arrays with Mol no longer works Reporter: Status: new Milestone: Version: development version Type: bug Priority: major Component: Carpet Comment (by Roland Haas): @{557058:d079f9c2-ad27-47b2-bf4b-ecc6bbe288b0} confirmed $private email$ that the branch rhaas/poisonarray seems to work. Applied as git hash [9d0eaa4c](https://bitbucket.org/eschnett/carpet/commits/9d0eaa4c2d4f617f50e… "Carpet: handle marking grid-arrays invalid correctly" of [carpet](https://bitbucket.org/eschnett/carpet) -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2534/evolution-of-grid…

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