Dirk Reiners said the following on 11/07/06 20:28: [ snip ] > In general transferring full buffers over the network is an expensive > proposition. Jan has been working on doing that for some other project, > can you give us an update on the performance you get? [ snip ]
hi,
while i can't provide conclusive/final numbers we've seen update rates for
network transferred buffers from 5 to 15Hz, depending on the buffer size (we
currently transfer fullscreen buffers at 1280x1024 or 1280x1440 and do not
exceed 15Hz). since we are working with 16x pci-e gfx devices the actual
network transfer time for a given buffer is at least one order of magnitude
higher than the combined readpixels on the source host and the drawpixels on
the target host (everything connected to a gbit switch with dual-gbit per
end-to-end connection, eg. an 8 port switch with a 16gbit backplane). the
situation might relax if the buffer is broadcast to several hosts, since
(ideally) no duplicate transfers are needed.
as i said i can't provide any numbers right now, but if anyone is interested
please ask me a month from now :)
hth,
j.
--
+------------------------------------+--------------------------------------+
| jan p. springer | [EMAIL PROTECTED] |
| computer science, buw.media.vrsys | [EMAIL PROTECTED] |
+------------------------------------+--------------------------------------+
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