[Beowulf] AMD64 results...
mb at gup.jku.at
Thu Dec 16 01:08:12 PST 2004
Bill Broadley wrote:
> The strange thing is they are 32 bit binaries, despite being built
> on a 64 bit os on a 64 bit hardware.
> I played around with various mentioned optimizations (including -xW)
> on the manpage, I never managed a 64 bit binary with icc-8.1 though.
> The man page has numerous i32em and em64t references.
You probably need to download the EM64T edition of the Intel compiler
8.1. It is called l_cce_pc_8.1.xxx. (Note the "e" in the filename).
There are also versions l_cc_... that do not create code for EM64T.
$ file stream_d
stream_d: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for
GNU/Linux 2.4.0, dynamically linked (uses shared libs), not stripped
This is what I get on my dual Opteron 1.6 GHz workstation (using Gentoo
Linux, icc -O3):
Function Rate (MB/s) RMS time Min time Max time
Copy: 1769.1100 0.2923 0.2894 0.3154
Scale: 1695.7910 0.3021 0.3019 0.3023
Add: 1646.2104 0.4668 0.4665 0.4670
Triad: 1793.2239 0.4286 0.4283 0.4294
Institute of Graphics and Parallel Processing, JKU Linz, Austria
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