F@H的GPU版离我们还远么？

Leeo

原本一直以为只有显卡是X1900, X1800的才能运行F@H的GPU版客户端。
前几天，在amd官网（也就是ati）介绍F@H方面的网页中看到这样一段话：

Stanford University is using ATI Radeon GPUs (Graphics Processor Units) to run Folding@Home, a distributed computing project designed by its chemistry department. This application performs computationally intensive simulations of protein folding, using the stream computing capabilities of ATI Radeon X1950, X1900, X1800, X1650, and X1600 Series processors, which provide incremental power over CPU processing.

上面说到X1650, and X1600 Series ，那么X1650GT市价￥599－699，X1650P市价￥499－599（甚至更~格）。象这样的中低端产品，二手的应该更多，况且在GForce8系列的打压下，显卡也进入一个更新周期了，象X1800, X1650, and X1600 会更加便宜的。如果搞几个玩玩，这样1个GPU客户端再差估计也能顶上5－6台Core 2哈 。

以上是不是我火星了或者理解上有错误啊？

顺便再问下NV的G80还不被F@H支持作为GPU客户端啊？

alexpon

http://support.ati.com/ics/support/kbAnswer.asp?questionID=23354
http://folding.stanford.edu/FAQ-ATI.html
上方聯結請參考
目前官方測試還是以1900 1950 為測試卡
以下節錄：
GPU and OS support
Which cards are supported?
We now support serveral classes of GPU boards, including X1600, X1800, and X1900 class GPU's from ATI. At the launch, we supported X1900 cards only. X1800 cards do not provide the performance seen in X1900's and so we strongly recommend X1900 class cards (although we now officially support X1800). X1900 and X1800 cards are actually quite different -- they have different processors (R520, R530 vs. the R580 [in the X1900 series]). The R580 makes a huge difference in performance -- its 48 pixel shaders are key, as we use pixel shaders for our computations. Also note that the card should have more than 256MB (i.e. at least 512MB) of RAM, otherwise the GPU client will put a huge load on the client machine (although we do note that the 256MB X1950Pro using PCIe does work reasonably well).

What about video cards with other (non-ATI) chipsets?
The R580 (in the X1900XT, etc.) performs particularly well for molecular dynamics, due to its 48 pixel shaders. Currently, other cards (such as those from nVidia and other ATI cards) do not perform well enough for our calculations as they have fewer pixel shaders. Also, nVidia cards in general have some technical limitations beyond the number of pixel shaders which makes them perform poorly in our calculations.

論壇內關鍵字  GPU 搜尋  有很多討論帖  :)

[ 本帖最后由 alexpon 于 2007-5-1 18:21 编辑 ]

Leeo

谢谢,2楼的alexpon兄弟.

看过了感觉还是有很多问题.
1.上文说x1800有点不同,强烈推荐使用x1900.那么低端的x1600系列支持得怎么样?文中没明确啊.
2.显存必须大于256m,否则客户端会有很大负荷.那么反映到计算速度上256m和512m的性能上相差多少啊?

nv80的GPU客户端好像还远得很啊.


又仔细看了下,好像意思是说x1600和x1800属于一类的,在象素渲染引擎上与x1900不同??还是仅仅是x1800与x1900不同呢??

[ 本帖最后由 Leeo 于 2007-5-1 20:53 编辑 ]

yon

多想有F@H的linux_x64版，我只有单核64位cpu

Leeo

。。。。。。。。。。。Gpu客户端前景这么惨淡啊。该干啥就去干啥吧。

Leeo

楼上的很专业，讲得很详细哈

水鬼

本来我还想弄两块 X1650 来耍耍的···