By: SHK (nomail.delete@this.mail.com), October 8, 2012 5:42 am
Room: Moderated Discussions
Robert Myers (rbmyersusa.delete@this.gmail.com) on October 4, 2012 10:24 am wrote:
One of the things i really don't like in HPC since the whole "clusters take over vector processors" has taken place is that even the top machines on top500 are stuck with commodity DRAM+hardware managed caches. Everybody is complaining about the memory wall but something like RLDRAM-3 (AFAIK) has never been used outside networking equipment.
Disregarding the physical implementation seems that a Cray T90 was a much better and balanced architecture for HPC.
anon (anon.delete@this.anon.com) on October 3, 2012 6:50 pm wrote:
>
> What do you mean by latency?
>
As I have been involved in
discussions, latency has always referred to the latency of memory references,
whether to cache, to local memory, or to remote
memory.
www.sandia.gov/~rcmurph/doc/latency.pdf
Robert.
One of the things i really don't like in HPC since the whole "clusters take over vector processors" has taken place is that even the top machines on top500 are stuck with commodity DRAM+hardware managed caches. Everybody is complaining about the memory wall but something like RLDRAM-3 (AFAIK) has never been used outside networking equipment.
Disregarding the physical implementation seems that a Cray T90 was a much better and balanced architecture for HPC.
