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Subject: Re: [OMPI devel] openmpi-1.7.2 fails to use the RDMACM CPC
From: Steve Wise (swise_at_[hidden])
Date: 2013-08-19 17:01:54


I guess HAVE_IBV_LINK_LAYER_ETHERNET is guarding against a libibverbs that doesn't have
IBV_LINK_LAYER_ETHERNET defined. So the proper fix, I think, is to enhance configure to check this
and #define HAVE_IBV_LINK_LAYER_ETHERNET if it exists. Or have it check existence of a link_layer
field in the ibv_port_attr structure.

> -----Original Message-----
> From: Steve Wise [mailto:swise_at_[hidden]]
> Sent: Monday, August 19, 2013 3:53 PM
> To: 'Open MPI Developers'; 'Jeff Squyres (jsquyres)'
> Cc: 'Indranil Choudhury'
> Subject: RE: [OMPI devel] openmpi-1.7.2 fails to use the RDMACM CPC
>
>
> This patch fixes iwarp. dunno if it breaks RoCE though :)
>
>
> [root_at_r9 ompi-trunk]# svn diff
> Index: ompi/mca/btl/openib/connect/btl_openib_connect_oob.c
> ===================================================================
> --- ompi/mca/btl/openib/connect/btl_openib_connect_oob.c (revision 29048)
> +++ ompi/mca/btl/openib/connect/btl_openib_connect_oob.c (working copy)
> @@ -127,7 +127,7 @@
> IB (this CPC will not work with iWarp). If we do not have the
> transport_type member, then we must be < OFED v1.2, and
> therefore we must be IB. */
> -#if defined(HAVE_STRUCT_IBV_DEVICE_TRANSPORT_TYPE) &&
> defined(HAVE_IBV_LINK_LAYER_ETHERNET)
> +#if defined(HAVE_STRUCT_IBV_DEVICE_TRANSPORT_TYPE)
> if (BTL_OPENIB_CONNECT_BASE_CHECK_IF_NOT_IB(btl)) {
> opal_output_verbose(5, ompi_btl_base_framework.framework_output,
> "openib BTL: oob CPC only supported on InfiniBand; skipped on
%s:%d",