I mentioned something about this earlier (though on another board), but just noticed it here again. Anyhow, I'm suspecting that the Linux client still trails behind the Windows. Anyhow, to preface this, both computer listings are the same physical box. It contains

- Athlon 64 3500+ OCed to 2.4 GHz
- MSI Neo 2-F
- 512 MB Corsair XMS
- Adaptec SCSI card 29160
- 2 10k rpm SCSI drives
- Radeon 9600
yadda, yadda

Now on the software side:

https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=12772

- Windows XP Pro SP2

Listed benches

Measured floating point speed 2242.99 million ops/sec
Measured integer speed 4092.96 million ops/sec

This listed computer

https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=32125

- Slamd64 10.2 (port of Slackware 10.2, but all compiled over to the AMD-64 (x86-64) instruction set.

- Otherwise, now has ATI's Linux x86-64 drivers installed on top of it, with nVidia's x86-64 nForce drivers added to it as well.

Course BOINC isn't compiled to the 64-bit instruction set, but to be so substantially trailing the Windows counterpart?

Measured floating point speed 1205.91 million ops/sec
Measured integer speed 2423.55 million ops/sec

What I noticed sometime ago, which got me scratching my head was the older Athlon XP 1900+ (a 1.6 GHz Athlon XP) getting better benchies then a 2.7 GHz Pentium 4 (OK the Athlon has better performance clock per clock, but reviews from various hardware sites haven't shown something that extreme on the AXP). The 2 processors had shown up entirely identical computing times on WUs.

In this case, it's the same exact computer, but multi-booting...

---

Are you running the optimized client?

Hopefully by the end of this week, I will start working to transform my Windows machines back to Linux machines. And yes on a unoptimized client the benchmarks have about 50% difference from Linux to Windows.

---