empty for non threaded builds, but somehow just by moving the code a
little bit around and removing 2 call to lock/unlock the latency for TCP
went down by 2 micro-seconds ...
This commit was SVN r8426.
number of recv system call by caching the data. Each endpoint has a buffer
(the size is an MCA parameter) that can be use as a cache. Before each receive
operation this buffer is added at the end of the iovec list. All data that are
not expected by the fragment will go in this cache. If the cache contain data
all subsequent receive will just memcpy the data into the BTL buffers.
The only drawback is that we will spin around the receive_handle until all the
cached data is readed by the PML layer. This limitation come from the fact that
the event library is unable to call us if there is no events on the socket.
Therefore we are unable to keep the data in the cache until the next loop
into the progress engine.
This commit was SVN r8398.
increase the previous connection code was broken. It can take as much as 60 seconds to connect
64 processes. Now we do not create the connections when we add the procs but only when we send
them the first message. Now it take only 1.6 seconds to setup a 64 procs MPI job over MX (doing a 2 steps barrier in order to insure that we create all the connections).
This commit was SVN r8252.
* turns out (duh!) that there was a reason that the <projectdir>dir
variable was set in the AM conditional. If not, stupid directories
are created and not needed... duh.
This commit was SVN r8205.
component/base Makefile.am files, reducing the time configure spends
stamping out Makefiles at the end
* Install base_impl.h file when devel-headers are being installed
This commit was SVN r8200.
is labeled as internal so the users will not see it but it is not read-only so we can still
play with it (that's for our internal tests). This is supposed to dissapear later after the
next (or next next) release of the MX library, but we need it now as a quick fix before the
release.
This commit was SVN r8161.
- Add big comment about a general overview of what the sm btl is doing
- random small code cleanups
- fix instances of mca_btl_sm[0] to mca_btl_sm[1] where relevant
- remove a lot of unused, confusing, and incorrect interface functions
from ompi_fifo.h and ompi_circular_buffer.h. These functions, if
they were used, would not work properly with the scheme that the sm
btl uses with the fifos (i.e., receiver makes right -- if necessary)
- add some missing offset computations in the fifo and circular buffers
- change the types of offsets to be ssize_t, not size_t
- remove an offset parameter from a function that didn't need it
This commit was SVN r8135.
- Ensure to convert base_shared_mem_flags to be a relative offset in
the global storage, and then to convert that back to an absolute
virtual address before we try to use it
- Don't double increment n_local_procs when calculating the peer rank
during bootstrapping of the different base address case
Something else is still wrong; if mmap() returns a different base
address, things don't work (i.e., segv or hang forever when you try to
send a message). More specifically, the bootstrapping now seems to
correctly handle the case when mmap() base addresses are different,
but the message passing does *not* -- it always assumes that the
mmap() base addresses are the same.
Still working on the fix for that -- want to checkpoint what has been
done so far to facilitate working on different machines...
This commit was SVN r8134.
- first we setup the connections in the begining with all the peers
- MX does not handle well the case where several peers make connections to the same
destination simultaneously.
So I change the order in which we connect. First we compute our rank in the array,
then in a round-robin fashion we setup connection starting with our left neighboard.
This commit was SVN r8075.
