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2
votes
1answer
91 views

What architecture are current computers based on? [closed]

What architecture are current computers based on? The Princeton Architecture or the Harvard Architecture? Some notes I found online state the Princeton architecture, but this creates the Princeton ...
2
votes
2answers
88 views

Integer arithmetic support on future HPC systems

I writing some robust geometric algorithms using quantization + integer arithmetic for evaluating exact predicates. However, since BlueGene's integer support is so terrible, it occurred to me that ...
10
votes
2answers
228 views

Literature references for modeling current and future energy costs of floating-point operations and data transfers

I am searching for the most important literature and slide references for modeling current and future energy costs of floating-point operations and data transfers across the CPU, memory, network, and ...
3
votes
3answers
369 views

What are the current obstacles to reaching exascale computing?

I have heard that one of the current goals in scientific computing is to surpass the exascale level by 2018 or so... After having passed the petascale a few years ago, one would think that the ...
33
votes
7answers
1k views

Is algorithmic analysis by flop-counting obsolete?

In my numerical analysis courses, I learned to analyze the efficiency of algorithms by counting the number of floating-point operations (flops) they require, relative to the size of the problem. For ...