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The D Programming Language

I'm investigating if the D programming language will be feasible for HPC. The D newsgroup. The DMD compiler, phobos and druntime are here. The GDC repository, GDC is a D compiler that uses the GCC backend (and DMD frontend). My project Bubbles aims to replicate (and maybe replace) PsimagLite using the D programming language.

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D Programming Language for HPC

The question I want to investigate is if the D Programming Language will be feasible for high-performance computing.

~~Can the compiler produce 64-bit executables?~~ Yes
~~Can executables run on capacity clusters?~~ Yes, tested on glyph and its nodes
Can executables run on high-end supercomputers?
Can the linker link with pthreads?
~~Can the linker link with BLAS and LAPACK?~~ Yes, tested with dsyev_ entry
Can the compiler call MPI? Can the linker link with MPI?
Is there a slowdown?

My D Diary

git cloned dmd, druntime and phobos. Changed -m32 into -m64 for everything, and did make -f posix.mak.

dmd.conf is now:

; dmd.conf file for dmd
; Names enclosed by %% are searched for in the existing environment
; and inserted. The special name %@P% is replaced with the path
; to this file.
[Environment]
DFLAGS=-I%@P%/../software/druntime/import -I%@P%/../software/phobos -L-L%@P%/../software/phobos/generated/linux/release/64

So, if using import std.stdio; one needs -L-lrt, else linker complains about clock_gettime undefined. Full comand line I'm using is dmd -O -release -m64 test.d -L-lrt and works fine.