LZO looks cool, but it's unfortunately GPL (Open MPI is BSD). Bummer.
On Apr 4, 2008, at 2:29 PM, Roland Dreier wrote:
>> Based on some discussion on this list, I integrated a zlib-based
>> ability into ORTE. Since the launch message sent to the orteds and
>> the modex
>> between the application procs are the only places where messages of
>> any size
>> are sent, I only implemented compression for those two exchanges.
>> I have found virtually no benefit to the compression. Essentially,
>> overhead consumed in compression/decompressing the messages pretty
>> balances out any transmission time differences. However, I could
>> only test
>> this for 64 nodes, 8ppn, so perhaps there is some benefit at larger
> A faster compression library might change the balance... eg LZO
> (http://www.oberhumer.com/opensource/lzo) might be worth a look
> I'm not an expert on all the compression libraries that are out there.
> - R.
> devel mailing list