Re:Why the data center needs an operating system
by SEJeff on Wednesday December 03, 2014 @06:26PM
(#8697018)
To further your point, you can get faster access directly via RDMA on an Infiniband network than the SATA bus can push data. The fastest SATA busses are around 16gbps I believe and you can get HDR IB switches that clock 50gbps today.
With the direction things are moving, "the data center as a computer" is absolutely the right approach.
Re:Why the data center needs an operating system
by thrownaway2424 on Wednesday December 03, 2014 @03:06PM
(#8696037)
Absolutely. In-core on a neighboring machine can be accessed in less than 1ms. On-disk on the local machine (or any machine) can take tens of seconds.
Re:Why the data center needs an operating system
by chetanahuja on Thursday December 04, 2014 @12:47AM
(#8698007)
"On-disk on the local machine (or any machine) can take tens of seconds"
Surely you meant 10's of milliseconds. But even so, fastest SSD random access latencies are in sub-millisecond ranges.
Re:Why the data center needs an operating system
by thrownaway2424 on Thursday December 04, 2014 @11:06AM
(#8699894)
No I did not mean that. Contended local disk access under heavy random read/write workloads takes essentially forever.
It seems like what might be ideal would be a specification language that doesn't care where things are, an implementation that tries to deal with that automagically, and a way to specify portions (to all) precisely that is checked against the high-level specification.