|
本帖最后由 cuda 于 2013-10-21 20:24 编辑
2012年3月,在AMD devgurus论坛上,有人发了一个题为"maximum mumber of GPUs"的帖子,询问能否突破单机8 GPU的限制,结果引起了AMD内部开发人员的兴趣:
http://devgurus.amd.com/thread/158863
This thread was singled out in the AMD Developer Central Newsletter yesterday as "one of the popular topics being discussed right now" and in this forum and "you'll notice the AMD moderators to be more responsive".
Out of all of the threads where 8+ AMD GPUs has come up for discussion in these forums, I don't believe the community has received input from AMD. We realize Skyrim multi-GPU driver support is more of a priority, but it would be a really big psychological and marketing win if AMD had a customer show off a 10-20 Tahiti GPU machine that could be used to smack around the competition.
AMD开发人员认为单机支持10-20GPU是很有用的,有迹象表明,AMD因此启动了一个"multi-gpu"计划,同时要求相关人员保密,不在论坛公开讨论此事:
jross,
This issue has been brought up with people internally, so it isn't ignored, it just isn't something we can discuss publicly. Thanks, Micah. I'm glad to hear that. Perhaps we could discuss this confidentially.
半年后,AMD开发人员成功搭建了一套单机16 GPUs的系统(8块FirePro S10000s),并取得单机8.2TFlops的实测双精度峰值性能(功耗也很惊人,3.6千瓦):
http://fireuser.com/blog/8_amd_firepro_s10000s_16_gpus_achieve_8_tflops_real_world_double_precision_/

成功突破了8 GPU的限制,估计"multi-gpu"计划也告一段落。
不过,在此之后一些用户自己搭建超过8个GPU的A卡系统还是会遇到问题,不知道AMD在驱动上是不是仍然有限制。至今为止,单机8块HD7990还没看到有人成功,否则跑FAH的PPD应该是很不错的。但是不管这么说,AMD在这方面的努力还是值得肯定的。
|
|