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On December 31, 2013 I was blindfolded I was taken from my home I was led to a dark room

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On December 31, 2013 I was blindfolded I was taken from my home I was led to a dark room. Meet Olaf. A snowman who looks forward to summer Specious reasoning, friend Olaf. The hot and the cold are both so intense Put them together – it just makes sense! . Pro Tools Audio Recording.

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Presentation Transcript
slide1

On December 31, 2013

I was blindfolded

I was taken from my home

I was led to a dark room

meet olaf
Meet Olaf
  • A snowman who looks forward to summer
  • Specious reasoning, friend Olaf

The hot and the cold are both so intense

Put them together – it just makes sense!

pro tools audio recording
Pro Tools Audio Recording
  • 1991 – NuBus card, 2x Motorola 56001 DSP, 4 channel
    • 24-bit fixed point
    • Integrated SCSI controllers important
  • 1998 – PCI card, 6x Motorola 56301 DSP, 64 channel
  • 1999 – Livin’ La Vida Loca recorded & mixed entirely in Pro Tools
  • 2002 – PCI card, 9x Motorola 56321 DSP, 192 channels
  • 2010 – HD Native, a non-DSP system, 256 channels
    • DSPs no longer “just make sense”
  • 2011 – PCIe card, 18x TI DSP, 256 channels
    • 32-bit floating point
biggest architecture win in 10 years1
Biggest architecture win in 10 years

GPGPUs

General-purpose graphics processing units

modern gpus are general purpose
Modern GPUs are general purpose
  • Successful because of generality
    • Applicable to many domains
    • Though only effective for data-parallel problems
  • Systems trump programs
    • How many programs to create amazon’s home page?
  • GPUs need system services
    • GPUfs [ASPLOS ‘13]
    • GPUnet [coming soon I hope…]
specialization the good and the bad
Specialization, the good and the bad
  • Improves performance, decreases energy
  • “Fixed-function” units
    • E.g., encryption, hashing, video decoder
    • Little need for system software, easy to multiplex
  • “Programmable” units – end users write software
    • E.g., early GPUs, IBM Cell, digital signal processors (DSP), network processors
    • Require much care & feeding from system software
    • Difficult programming model
wah wah wah dennard scaling
Wah, wah, wah Dennard scaling…
  • 10x, 100x memory bandwidth
  • 2 cycle memory access latency
  • Persistent byte-addressable memory
  • Abundant wireless bandwidth
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