[tahoe-dev] [allmydata.org "zfec"] #4: use SSE2 to speed up multiplication

[allmydata.org zfec]

#4: use SSE2 to speed up multiplication
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 Reporter:  zooko        |           Owner:  somebody
     Type:  enhancement  |          Status:  new     
 Priority:  major        |       Milestone:          
Component:  component1   |         Version:          
 Keywords:               |   Launchpad_bug:          
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 Jack Lloyd contributed a patch that speeds up encoding using SSE2
 instructions (on some platforms).  Unfortunately there is this mysterious
 problem where it actually causes it to slow down when it is executed from
 Python!  So this patch probably shouldn't be applied as-is, but someone
 should investigate and figure out why it causes a slowdown when invoked
 from Python but not from C.

 http://allmydata.org/pipermail/tahoe-dev/2009-February/001066.html

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Ticket URL: <http://allmydata.org/trac/zfec/ticket/4>
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