SCI, Myrinet Benchmarks using EFF_BW

Bob Felderman feldy at
Thu May 18 10:06:04 PDT 2000

=> On Thu, 18 May 2000, Anas Nashif wrote:
=> > On Wed, 17 May 2000, Bob Felderman wrote:
=> > 
=> > > For GM/Myrinet, did you compile with the -gm-can-register-memory
=> > > option?
=> > > 
=> > No, I read in the documentation that you dont recommend using it on linux
=> > boxes (with redhat 6.0 or greater), so assumed this also applies to SuSE.
=> > 
=> That's not what I remember. You need to use --gm-can-register-memory in
=> order to enable zero-copy, which should give a nice performance boost. 
=> Other platforms (e.g. Solaris) don't support that. Bob, is that going to
=> change with gm1.2 ?
=> Jason

We had seen some problems with the memory registration cache code
on some linux platforms and were never able to figure out what was
happening. Most people see to be able to run fine on various
linux platforms. We now have memory registration in linux, freebsd,
NT and vxworks, but still not solaris. I have seen that solaris8
has exported the functions we think we need for memory-registration,
but we have not coded it yet.

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