15-740 Fall '97
Notes on Class Material
Information about these are on the
Course Readings Page
List of all class handouts, other than assignments.
- Lecture notes on MIPS programming (Sept. 17 & 19)
- Lecture notes on ISA comparison (Sept. 22)
- Lecture notes on Pipelined MIPS Implementation (Sept. 24 & 26)
- Lecture notes on High Performance Processors (Sept. 29)
- Lecture notes on Instruction Level Parallelism (Oct. 1)
- Lecture notes on Superscalar Processors (Oct. 3)
- Lecture notes on DEC Alpha 21264 (Oct. 6)
- Lecture notes on Memory Technology (Oct. 17)
- Lecture notes on Multimedia Computing (Nov. 3)
- Lecture notes on Shared Memory Multiprocessors (Nov. 19)
- Lecture notes on Model Checking (Nov. 21)
- Revised Lecture notes on further issues regarding Shared Memory (Nov. 24)
- Adobe acrobat,
- Note: these revisions correct the following shortcomings in the cache
consistency protocol presented in class:
- Inconsistent state when cache independently writes back block that home is attempting to fetch.
- Home would think WRITE message was response to FETCH
- Fix by defining separate cache commands: WRITEBACK (cache gives up copy of block), and WRITEHOLD (cache shares copy of block).
- Processor attempts read or write while home is handling read or write request for different processor.
- Would cause deadlock if home unable to processor READ or XREAD while in one of the "Pending" states
- Fix is to immediately send NACK (negative acknowledgement) back to requestor.
- Lecture notes on Implementing Network-Based Shared Memory Multiprocessors (Dec. 3)
- Lecture notes on Future Technology (Dec. 5)
The following document, retrieved from the
MIPS WWW site.
describes the MIPS instruction set. It
describes 4 generations of the instruction set definition, labeled I
through IV. For this course, we will stick with the original (MIPS I)
- Here's more information on timings of sparse
matrix multiplication on different machines.
- My favorite
source of information on microprocessors is Microprocessor
Report. The subscription price is high, but you get lots of
information for your money. The CMU E&S Library has a subscription.