I have access to a Linux/x86-64 machine running "Red Hat Enterprise Linux AS release 4"

It has a pretty old gcc:

$ gcc --version | head -1

gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-3)

As shown below, this gcc is rejecting some portion of the atomics.

I am certain I've tested ompi-1.5 and 1.6 on this machine w/o any problems, as well as the trunk (probably sometime in late Feb 2012). So, this appears to be a REGRESSION.

-Paul

make[2]: Entering directory `/home/phhargrove/OMPI/openmpi-1.7rc5-linux-x86_64-psm/BLD/orte/mca/oob/tcp'

CC oob_tcp.lo

/home/phhargrove/OMPI/openmpi-1.7rc5-linux-x86_64-psm/openmpi-1.7rc5/orte/mca/oob/tcp/oob_tcp.c: In function `mca_oob_tcp_listen_thread':

/home/phhargrove/OMPI/openmpi-1.7rc5-linux-x86_64-psm/openmpi-1.7rc5/opal/include/opal/sys/amd64/atomic.h:85: error: inconsistent operand constraints in an `asm'

make[2]: *** [oob_tcp.lo] Error 1

make[2]: Leaving directory `/home/phhargrove/OMPI/openmpi-1.7rc5-linux-x86_64-psm/BLD/orte/mca/oob/tcp'

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory `/home/phhargrove/OMPI/openmpi-1.7rc5-linux-x86_64-psm/BLD/orte'

make: *** [all-recursive] Error 1

On Tue, Oct 30, 2012 at 7:01 PM, Ralph Castain <rhc@open-mpi.org> wrote:

Hi folks

We have posted the next release candidate (rc5) for the 1.7.0 release in the usual place:

http://www.open-mpi.org/software/ompi/v1.7/

Please put it thru the wringer to help us validate it prior to release later this month. We think this looks pretty complete, pending someone finding a problem.

Thanks
Ralph

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Paul H. Hargrove PHHargrove@lbl.gov

Future Technologies Group

Computer and Data Sciences Department Tel: +1-510-495-2352

Lawrence Berkeley National Laboratory Fax: +1-510-486-6900