Re: [Boost-build] Parallel builds and runs

From: Noel Belcourt (kbelco_at_[hidden])
Date: 2006-02-21 13:13:01

On Feb 21, 2006, at 12:02 AM, Vladimir Prus wrote:

> Hi Noel,
>
> Essentially, you ask if Boost.Build supports MPI. I think nobody ever 
> tried,
> so we can't claim such support. However:
>
>> 1) compiling for MPI using the compiler wrapper scripts (mpicc, mpiCC)
>
> If the question in replacing 'gcc' with 'mpicc' in command lines?

Yes.

> Well, you
> can specify a custom compiler name in 'gcc' invocation, or you can 
> inherit
> new "mpicc" toolset from gcc.jam and change it as needed.

Okay, I'll try this out.

>> 2) honoring the requested <toolset> by loading the appropriate 
>> module(s)
>
> I don't understand what you mean here, sorry.

Sorry, I was a bit too terse.  Consider Darwin (Tiger actually) where I 
can have
both gcc 3.3 and 4.0 compilers installed and can use the gcc_select 
command
to swap which gcc compiler is picked up.  The ability to swap the 
default compiler
is what I mean by loading a module.  On many of our systems, we have 
numerous
compilers installed and need to load the appropriate compiler module(s) 
before we
build.

For example, if on Darwin I asked for a gcc 3.3 build but the last 
invocation of
gcc_select left the 4.0 compilers as the defaults, would bjam detect 
that the wrong
compilers were being run?  I guess my question is does bjam perform a 
version
check on the compiler if the user has requested a specific compiler 
version?

> I guess most of required machinery is needed, but since you're the one 
> with
> domain knowledge you'd need to try some things and then say what works 
> and
> what not and what should be fixed. I'd be happy if Boost.Build gets 
> support
> for MPI programs.

Great, I'll do just that and let you know how it goes.

Thanks for the help.

-- Noel