1) Message boards : Number crunching : Nvidia 560 Ti seems slow (Message 22633)
Posted 4523 days ago by Daniel Neely
Flops64 = flops32/2 is only true if all your hardware pipelines are capable of running 2 32 or 1 64bit operation at a time. This is generally the case in CPUs. It's not the case in GPUs because 64 bit is virtually useless for gaming.

For consumer cards nVidia has 1/8 for their top tier (570, 580, 590), and 1/12 for the middle tier (560, 550). I'm not sure if their lower tiers support FP64 at all. Quadro/Tesla cards based on the same GPU as the 570+ do have 1/2 FP64 performance; but are priced high enough that only companies with deep pockets can afford them. Quadros built around lesser GPUs are as limited as their consumer equivalents.

ATI offers 1/4 FP64 performance on their 69xx series cards, 1/5 on the previous 58xx and 48xx series; and IIRC none on lower models at all since they're not in the businesss of marking GPUs up 4-6x to sell to enterprise customers.

2) Message boards : Number crunching : 2 WU's on one card? (Message 20339)
Posted 4828 days ago by Daniel Neely
I've noticed that my 260's are only running at 50-70% load and was wondering if anyone had tried using an app config file to run 2 tasks concurrently in order to increase throughput?
3) Message boards : Graphics cards (GPUs) : Video Card Longevity (Message 10521)
Posted 5429 days ago by Daniel Neely
lution the manufacturers would have to offer special 24/7-versions of their cards: slightly lower clocks, slightly lower voltages, maybe a better cooling solution and the fan setting biased towards cooling rather than noise. Such cards could be used for 24/7 crunching.. but who would buy them? More expensive, slower and likely louder!



Isn't that called the nVidia Tesla?
4) Message boards : Number crunching : Credits calculations (Message 8292)
Posted 5495 days ago by Daniel Neely
Would reducing my resource share for GPU grid help with keeping its queue short while maintaining a longer one for my CPU, or would I just end up with an idle GPU at times because I only had CPU WUs?
5) Message boards : Graphics cards (GPUs) : Why does CUDA always occupy a CPU's core ? (Message 6845)
Posted 5540 days ago by Daniel Neely
Since anything later than 6.4.5 is a dev version, how can I know which ones are stable enough to use?


//