Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] openib btl build question
From: Don Kerr (Don.Kerr_at_[hidden])
Date: 2008-05-22 09:19:44


Thanks Jeff. Thanks Brian.

I ran into this because I was specifically trying to configure with
"--disable-progress-threads --disable-mpi-threads" at which point I
figured, might as well turn off all threads so I added
"--without-threads" as well. But can't live without mpi_leave_pinned so
threads are back.

Jeff Squyres wrote:
> On May 21, 2008, at 4:37 PM, Brian W. Barrett wrote:
>
>
>>> ptmalloc2 is not *required* by the openib btl. But it is required on
>>> Linux if you want to use the mpi_leave_pinned functionality. I see
>>> one function call to __pthread_initialize in the ptmalloc2 code -- it
>>> *looks* like it's a function of glibc, but I don't know for sure.
>>>
>> There's actually more than that, it's just buried a bit. There's a
>> whole
>> bunch of thread-specific data stuff, which is wrapped so that
>> different
>> thread packages can be used (although OMPI only supports pthreads).
>> The
>> wrappers are in ptmalloc2/sysdeps/pthreads.
>>
>
>
> Doh! I didn't "grep -r"; my bad...
>
>