Escali 4.4 사용자 설명서

Section: 2.4 Support for other interconnects

The zerocopy protocol is special case of the transporter protocol t. It includes the same steps 
as a transporter except that data is written directly into the receivers buffer instead of being 
buffered in the transporter-ringbuffer.

The zerocopy protocol is selected if the underlying hardware can support it. To disable it, set 
the zerocopy_count or the zerocopy_size parameters to 0

A uDAPL 1.1 module must be developed to interface other interconnects to Scali MPI Connect.
The listing below identifies the particular functions that must be implemented in order for SMC 
to be able to use a uDAPL-implementation:

dat_cr_accept
dat_cr_query
dat_cr_reject
dat_ep_connect
dat_ep_create
dat_ep_disconnect
dat_ep_free
dat_ep_post_rdma_write
dat_evd_create
dat_evd_dequeue
dat_evd_free
dat_evd_wait
dat_ia_close
dat_ia_open
dat_ia_query
dat_lmr_create
dat_lmr_free
dat_psp_create
dat_psp_free
dat_pz_create
dat_pz_free
dat_set_consumer_context

At the time being SMC does not implement the full MPI-2 functionality. At the same time some 
users are asking for parts of the MPI-2 functionality, in particular the MPI-I/O functions. To fill 
the users needs Scali are now using the Open Source ROMIO software to offer this functionality.