Closed Bug 256664 Opened 20 years ago Closed 20 years ago

AMD64 / Opteron 64-bit optimizations for mpi NSS code

Categories

(NSS :: Libraries, defect)

Product:
NSS
Component:
Libraries
Platform:
x86
All
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

(Not tracked)

Status:
RESOLVED DUPLICATE of bug 272327

People

(Reporter: julien.pierre, Assigned: wtc)

Details

(Keywords: 64bit) 

Currently, there is mpi assembly code for x86, but not AMD64 (x86-64) . The only
way to get NSS to compile on a native AMD64 OS (whether Linux, Solaris, Win XP)
is to compile the C version of the code, which is expected to be slower.

It might be possible to port the mpi assembly code to 64-bit without too much
work. However, this might not perform as well as expected. Perhaps additional
work should be done to use new AMD64 instructions .

In either case, a fair amount of performance measurements will need to be done
to compare the different versions.
Keywords: 64bit
Looks like we will be doing this sooner rather than later. Opteron hHardware is
in, with RHAS 3.0 64-bit installed. We also have a couple more machines waiting
to have Solaris10 and Win64 64-bit installed.

Yes, it's a duplicate.


*** This bug has been marked as a duplicate of 272327 ***
Status: NEW → RESOLVED
Closed: 20 years ago
Resolution: --- → DUPLICATE
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