Re: [OMPI devel] extracting MPI message tag at the btl level

2007-07-02 Thread Karol Mroz
I've noticed the varying headers depending on transmit protocols but was unaware that you couldn't access the message tag from within the BTL. Well then, that answers that :) Thanks for the info. George Bosilca wrote: Karol, There is no way to know the MPI tag at the BTL level. The BTL is pr

Re: [OMPI devel] extracting MPI message tag at the btl level

2007-07-02 Thread George Bosilca
Karol, There is no way to know the MPI tag at the BTL level. The BTL is protocol agnostic, it only moves bytes around (BTL = Byte Transport Layer). Moreover, the BTLs can be (and are) used by different PML, each of them supporting a different protocol. Now, let talk specifically about the

[OMPI devel] extracting MPI message tag at the btl level

2007-07-02 Thread Karol Mroz
Good morning everyone. I had a question about obtaining the message tag from the iovec array in mca_btl_sctp_frag_t* frag from within the mca_btl_tcp_frag_send() function. If I understand correctly, the first X bytes in the first iovec entry contain message header information in the form of an

[OMPI devel] Installdirs functionality FAQ entry

2007-07-02 Thread Jeff Squyres
FYI: I finally found some time while on planes/trains/automobiles recently to write up how the installdirs functionality works in OMPI: http://www.open-mpi.org/faq/?category=building#installdirs -- Jeff Squyres Cisco Systems