1) Message boards : Graphics cards (GPUs) : ACEMD2 6.12 cuda and 6.13 cuda31 for windows and linux (Message 19515)
Posted 1444 days ago by Profile Microcruncher*
Has anyone else got a way of getting a clear answer from NVidia, not only for this gerenaration of chips, but hopefully a software API that will work on future generations as well?

No. Of course, an API would be nice but it should be kept simple or otherwise the BOINC programmers end up writing and maintaining a sysinfo tool only to display one not very interesting number. It is interesting if BOINC detects the GPUs but the display of the "correct" theoretical performance for a card like my GTX 460 (which behaves with one app like a 336 SP card and with another like a 224 SP card because the two warp schedulers per multiprocessor can't make use of the extra 16 cores each MP has) should be far down on the priority list.
2) Message boards : Graphics cards (GPUs) : ACEMD2 6.12 cuda and 6.13 cuda31 for windows and linux (Message 19512)
Posted 1444 days ago by Profile Microcruncher*
That 421 GFLOPS peak is also wrong, it should be about 602 and Ralf's 650 GFlops peak for a GTX460 is also low; should be 907.

The GFLOPS display is pretty much useless. BOINC 6.10.58 for Windows reports 363 GFLOPS for the GTX 460 (independent of the shader clocks) while my old GTX 260 was rated at 477 GFLOPS at stock clock.
3) Message boards : Graphics cards (GPUs) : ACEMD2 6.12 cuda and 6.13 cuda31 for windows and linux (Message 19506)
Posted 1444 days ago by Profile Microcruncher*
'driver version unknown' is a bit odd as it shows up in UBUNTU as 260.19.21

That's quite normal. Here (Ubuntu 64 Bit, GTX 460, 260.19.12) it looks similar:

Di 16 Nov 2010 13:47:05 CET NVIDIA GPU 0: GeForce GTX 460 (driver version unknown, CUDA version 3020, compute capability 2.1, 1023MB, 650 GFLOPS peak)
4) Message boards : Graphics cards (GPUs) : Fermi (Message 16397)
Posted 1656 days ago by Profile Microcruncher*
That's probably because I don't find their science very compelling ;)
Do you know if they use integer or single or double fp?

MrS


The CUDA variant uses integer instructions. There should be no need for floating point calculations in a rc5-72 known plaintext attack.

To prevent some misconceptions: A known plaintext attack doesn't mean that the message is known.